Antifungal activity against Diplodia seriata BoF98-1 assessed as growth inhibition measured after 1 to 10 days
|
Diplodia seriata
|
24.0
%
|
|
Journal : J Agric Food Chem
Title : Phenolics and their antifungal role in grapevine wood decay: focus on the Botryosphaeriaceae family.
Year : 2012
Volume : 60
Issue : 48
First Page : 11859
Last Page : 11868
Authors : Lambert C, Bisson J, Waffo-Téguo P, Papastamoulis Y, Richard T, Corio-Costet MF, Mérillon JM, Cluzet S.
Abstract : The interaction between Vitis vinifera and trunk disease fungi requires better understanding. We studied the role of phenolics as possible plant defense compounds in this context. The impact of 24 grapevine phenolic compounds was determined on 6 major wood decay fungi by an in vitro agar plate assay. Hydroxystilbenoids, especially oligomers such as miyabenol C, isohopeaphenol, and vitisin A and B, greatly reduced the growth of the fungi, except that of Phaeoacremonium aleophilum . A detailed investigation in 10 Botryosphaeriaceae strains revealed that all of the studied members of this family display a common susceptibility to phenolics that is more or less significant. Then we undertook a quantitative analysis of stilbenoid content in grapevine plantlets inoculated with Botryosphaeriaceae to investigate whether in planta these fungi have to counteract the most active phenolics. On the basis of our results, the possible role of phenolics in grapevine defense against trunk disease agents is discussed.
Antifungal activity against Diplodia seriata BoF99-1 assessed as growth inhibition measured after 1 to 10 days
|
Diplodia seriata
|
24.0
%
|
|
Journal : J Agric Food Chem
Title : Phenolics and their antifungal role in grapevine wood decay: focus on the Botryosphaeriaceae family.
Year : 2012
Volume : 60
Issue : 48
First Page : 11859
Last Page : 11868
Authors : Lambert C, Bisson J, Waffo-Téguo P, Papastamoulis Y, Richard T, Corio-Costet MF, Mérillon JM, Cluzet S.
Abstract : The interaction between Vitis vinifera and trunk disease fungi requires better understanding. We studied the role of phenolics as possible plant defense compounds in this context. The impact of 24 grapevine phenolic compounds was determined on 6 major wood decay fungi by an in vitro agar plate assay. Hydroxystilbenoids, especially oligomers such as miyabenol C, isohopeaphenol, and vitisin A and B, greatly reduced the growth of the fungi, except that of Phaeoacremonium aleophilum . A detailed investigation in 10 Botryosphaeriaceae strains revealed that all of the studied members of this family display a common susceptibility to phenolics that is more or less significant. Then we undertook a quantitative analysis of stilbenoid content in grapevine plantlets inoculated with Botryosphaeriaceae to investigate whether in planta these fungi have to counteract the most active phenolics. On the basis of our results, the possible role of phenolics in grapevine defense against trunk disease agents is discussed.
Antifungal activity against Diplodia seriata LAT28 assessed as growth inhibition measured after 1 to 10 days
|
Diplodia seriata
|
24.0
%
|
|
Journal : J Agric Food Chem
Title : Phenolics and their antifungal role in grapevine wood decay: focus on the Botryosphaeriaceae family.
Year : 2012
Volume : 60
Issue : 48
First Page : 11859
Last Page : 11868
Authors : Lambert C, Bisson J, Waffo-Téguo P, Papastamoulis Y, Richard T, Corio-Costet MF, Mérillon JM, Cluzet S.
Abstract : The interaction between Vitis vinifera and trunk disease fungi requires better understanding. We studied the role of phenolics as possible plant defense compounds in this context. The impact of 24 grapevine phenolic compounds was determined on 6 major wood decay fungi by an in vitro agar plate assay. Hydroxystilbenoids, especially oligomers such as miyabenol C, isohopeaphenol, and vitisin A and B, greatly reduced the growth of the fungi, except that of Phaeoacremonium aleophilum . A detailed investigation in 10 Botryosphaeriaceae strains revealed that all of the studied members of this family display a common susceptibility to phenolics that is more or less significant. Then we undertook a quantitative analysis of stilbenoid content in grapevine plantlets inoculated with Botryosphaeriaceae to investigate whether in planta these fungi have to counteract the most active phenolics. On the basis of our results, the possible role of phenolics in grapevine defense against trunk disease agents is discussed.
Antifungal activity against Lasiodiplodia theobromae CBS116460 assessed as growth inhibition measured after 1 to 10 days
|
Lasiodiplodia theobromae
|
24.0
%
|
|
Journal : J Agric Food Chem
Title : Phenolics and their antifungal role in grapevine wood decay: focus on the Botryosphaeriaceae family.
Year : 2012
Volume : 60
Issue : 48
First Page : 11859
Last Page : 11868
Authors : Lambert C, Bisson J, Waffo-Téguo P, Papastamoulis Y, Richard T, Corio-Costet MF, Mérillon JM, Cluzet S.
Abstract : The interaction between Vitis vinifera and trunk disease fungi requires better understanding. We studied the role of phenolics as possible plant defense compounds in this context. The impact of 24 grapevine phenolic compounds was determined on 6 major wood decay fungi by an in vitro agar plate assay. Hydroxystilbenoids, especially oligomers such as miyabenol C, isohopeaphenol, and vitisin A and B, greatly reduced the growth of the fungi, except that of Phaeoacremonium aleophilum . A detailed investigation in 10 Botryosphaeriaceae strains revealed that all of the studied members of this family display a common susceptibility to phenolics that is more or less significant. Then we undertook a quantitative analysis of stilbenoid content in grapevine plantlets inoculated with Botryosphaeriaceae to investigate whether in planta these fungi have to counteract the most active phenolics. On the basis of our results, the possible role of phenolics in grapevine defense against trunk disease agents is discussed.
Antifungal activity against Diplodia seriata PLU03 assessed as growth inhibition measured after 1 to 10 days
|
Diplodia seriata
|
24.0
%
|
|
Journal : J Agric Food Chem
Title : Phenolics and their antifungal role in grapevine wood decay: focus on the Botryosphaeriaceae family.
Year : 2012
Volume : 60
Issue : 48
First Page : 11859
Last Page : 11868
Authors : Lambert C, Bisson J, Waffo-Téguo P, Papastamoulis Y, Richard T, Corio-Costet MF, Mérillon JM, Cluzet S.
Abstract : The interaction between Vitis vinifera and trunk disease fungi requires better understanding. We studied the role of phenolics as possible plant defense compounds in this context. The impact of 24 grapevine phenolic compounds was determined on 6 major wood decay fungi by an in vitro agar plate assay. Hydroxystilbenoids, especially oligomers such as miyabenol C, isohopeaphenol, and vitisin A and B, greatly reduced the growth of the fungi, except that of Phaeoacremonium aleophilum . A detailed investigation in 10 Botryosphaeriaceae strains revealed that all of the studied members of this family display a common susceptibility to phenolics that is more or less significant. Then we undertook a quantitative analysis of stilbenoid content in grapevine plantlets inoculated with Botryosphaeriaceae to investigate whether in planta these fungi have to counteract the most active phenolics. On the basis of our results, the possible role of phenolics in grapevine defense against trunk disease agents is discussed.
Antifungal activity against Diplodia mutila BRA08 assessed as growth inhibition measured after 1 to 10 days
|
Diplodia mutila
|
24.0
%
|
|
Journal : J Agric Food Chem
Title : Phenolics and their antifungal role in grapevine wood decay: focus on the Botryosphaeriaceae family.
Year : 2012
Volume : 60
Issue : 48
First Page : 11859
Last Page : 11868
Authors : Lambert C, Bisson J, Waffo-Téguo P, Papastamoulis Y, Richard T, Corio-Costet MF, Mérillon JM, Cluzet S.
Abstract : The interaction between Vitis vinifera and trunk disease fungi requires better understanding. We studied the role of phenolics as possible plant defense compounds in this context. The impact of 24 grapevine phenolic compounds was determined on 6 major wood decay fungi by an in vitro agar plate assay. Hydroxystilbenoids, especially oligomers such as miyabenol C, isohopeaphenol, and vitisin A and B, greatly reduced the growth of the fungi, except that of Phaeoacremonium aleophilum . A detailed investigation in 10 Botryosphaeriaceae strains revealed that all of the studied members of this family display a common susceptibility to phenolics that is more or less significant. Then we undertook a quantitative analysis of stilbenoid content in grapevine plantlets inoculated with Botryosphaeriaceae to investigate whether in planta these fungi have to counteract the most active phenolics. On the basis of our results, the possible role of phenolics in grapevine defense against trunk disease agents is discussed.
Antifungal activity against Neofusicoccum luteum CBS110299 assessed as growth inhibition measured after 1 to 10 days
|
Neofusicoccum luteum
|
14.0
%
|
|
Journal : J Agric Food Chem
Title : Phenolics and their antifungal role in grapevine wood decay: focus on the Botryosphaeriaceae family.
Year : 2012
Volume : 60
Issue : 48
First Page : 11859
Last Page : 11868
Authors : Lambert C, Bisson J, Waffo-Téguo P, Papastamoulis Y, Richard T, Corio-Costet MF, Mérillon JM, Cluzet S.
Abstract : The interaction between Vitis vinifera and trunk disease fungi requires better understanding. We studied the role of phenolics as possible plant defense compounds in this context. The impact of 24 grapevine phenolic compounds was determined on 6 major wood decay fungi by an in vitro agar plate assay. Hydroxystilbenoids, especially oligomers such as miyabenol C, isohopeaphenol, and vitisin A and B, greatly reduced the growth of the fungi, except that of Phaeoacremonium aleophilum . A detailed investigation in 10 Botryosphaeriaceae strains revealed that all of the studied members of this family display a common susceptibility to phenolics that is more or less significant. Then we undertook a quantitative analysis of stilbenoid content in grapevine plantlets inoculated with Botryosphaeriaceae to investigate whether in planta these fungi have to counteract the most active phenolics. On the basis of our results, the possible role of phenolics in grapevine defense against trunk disease agents is discussed.
Antifungal activity against Neofusicoccum parvum PER20 assessed as growth inhibition measured after 1 to 10 days
|
Neofusicoccum parvum
|
14.0
%
|
|
Journal : J Agric Food Chem
Title : Phenolics and their antifungal role in grapevine wood decay: focus on the Botryosphaeriaceae family.
Year : 2012
Volume : 60
Issue : 48
First Page : 11859
Last Page : 11868
Authors : Lambert C, Bisson J, Waffo-Téguo P, Papastamoulis Y, Richard T, Corio-Costet MF, Mérillon JM, Cluzet S.
Abstract : The interaction between Vitis vinifera and trunk disease fungi requires better understanding. We studied the role of phenolics as possible plant defense compounds in this context. The impact of 24 grapevine phenolic compounds was determined on 6 major wood decay fungi by an in vitro agar plate assay. Hydroxystilbenoids, especially oligomers such as miyabenol C, isohopeaphenol, and vitisin A and B, greatly reduced the growth of the fungi, except that of Phaeoacremonium aleophilum . A detailed investigation in 10 Botryosphaeriaceae strains revealed that all of the studied members of this family display a common susceptibility to phenolics that is more or less significant. Then we undertook a quantitative analysis of stilbenoid content in grapevine plantlets inoculated with Botryosphaeriaceae to investigate whether in planta these fungi have to counteract the most active phenolics. On the basis of our results, the possible role of phenolics in grapevine defense against trunk disease agents is discussed.
Antifungal activity against Neofusicoccum parvum Bp0014 assessed as growth inhibition measured after 1 to 10 days
|
Neofusicoccum parvum
|
14.0
%
|
|
Journal : J Agric Food Chem
Title : Phenolics and their antifungal role in grapevine wood decay: focus on the Botryosphaeriaceae family.
Year : 2012
Volume : 60
Issue : 48
First Page : 11859
Last Page : 11868
Authors : Lambert C, Bisson J, Waffo-Téguo P, Papastamoulis Y, Richard T, Corio-Costet MF, Mérillon JM, Cluzet S.
Abstract : The interaction between Vitis vinifera and trunk disease fungi requires better understanding. We studied the role of phenolics as possible plant defense compounds in this context. The impact of 24 grapevine phenolic compounds was determined on 6 major wood decay fungi by an in vitro agar plate assay. Hydroxystilbenoids, especially oligomers such as miyabenol C, isohopeaphenol, and vitisin A and B, greatly reduced the growth of the fungi, except that of Phaeoacremonium aleophilum . A detailed investigation in 10 Botryosphaeriaceae strains revealed that all of the studied members of this family display a common susceptibility to phenolics that is more or less significant. Then we undertook a quantitative analysis of stilbenoid content in grapevine plantlets inoculated with Botryosphaeriaceae to investigate whether in planta these fungi have to counteract the most active phenolics. On the basis of our results, the possible role of phenolics in grapevine defense against trunk disease agents is discussed.
Antifungal activity against Botryosphaeria dothidea OGE14 assessed as growth inhibition measured after 1 to 10 days relative to control
|
Botryosphaeria dothidea
|
14.0
%
|
|
Journal : J Agric Food Chem
Title : Phenolics and their antifungal role in grapevine wood decay: focus on the Botryosphaeriaceae family.
Year : 2012
Volume : 60
Issue : 48
First Page : 11859
Last Page : 11868
Authors : Lambert C, Bisson J, Waffo-Téguo P, Papastamoulis Y, Richard T, Corio-Costet MF, Mérillon JM, Cluzet S.
Abstract : The interaction between Vitis vinifera and trunk disease fungi requires better understanding. We studied the role of phenolics as possible plant defense compounds in this context. The impact of 24 grapevine phenolic compounds was determined on 6 major wood decay fungi by an in vitro agar plate assay. Hydroxystilbenoids, especially oligomers such as miyabenol C, isohopeaphenol, and vitisin A and B, greatly reduced the growth of the fungi, except that of Phaeoacremonium aleophilum . A detailed investigation in 10 Botryosphaeriaceae strains revealed that all of the studied members of this family display a common susceptibility to phenolics that is more or less significant. Then we undertook a quantitative analysis of stilbenoid content in grapevine plantlets inoculated with Botryosphaeriaceae to investigate whether in planta these fungi have to counteract the most active phenolics. On the basis of our results, the possible role of phenolics in grapevine defense against trunk disease agents is discussed.
Induction of Eutypa lata BX1-10 growth at 500 uM
|
Eutypa lata
|
None
|
|
Journal : J Agric Food Chem
Title : Phenolics and their antifungal role in grapevine wood decay: focus on the Botryosphaeriaceae family.
Year : 2012
Volume : 60
Issue : 48
First Page : 11859
Last Page : 11868
Authors : Lambert C, Bisson J, Waffo-Téguo P, Papastamoulis Y, Richard T, Corio-Costet MF, Mérillon JM, Cluzet S.
Abstract : The interaction between Vitis vinifera and trunk disease fungi requires better understanding. We studied the role of phenolics as possible plant defense compounds in this context. The impact of 24 grapevine phenolic compounds was determined on 6 major wood decay fungi by an in vitro agar plate assay. Hydroxystilbenoids, especially oligomers such as miyabenol C, isohopeaphenol, and vitisin A and B, greatly reduced the growth of the fungi, except that of Phaeoacremonium aleophilum . A detailed investigation in 10 Botryosphaeriaceae strains revealed that all of the studied members of this family display a common susceptibility to phenolics that is more or less significant. Then we undertook a quantitative analysis of stilbenoid content in grapevine plantlets inoculated with Botryosphaeriaceae to investigate whether in planta these fungi have to counteract the most active phenolics. On the basis of our results, the possible role of phenolics in grapevine defense against trunk disease agents is discussed.
Antifungal activity against Togninia minima SO21 assessed as susceptibility at 500 uM measured after 1 to 10 days
|
Togninia minima
|
None
|
|
Journal : J Agric Food Chem
Title : Phenolics and their antifungal role in grapevine wood decay: focus on the Botryosphaeriaceae family.
Year : 2012
Volume : 60
Issue : 48
First Page : 11859
Last Page : 11868
Authors : Lambert C, Bisson J, Waffo-Téguo P, Papastamoulis Y, Richard T, Corio-Costet MF, Mérillon JM, Cluzet S.
Abstract : The interaction between Vitis vinifera and trunk disease fungi requires better understanding. We studied the role of phenolics as possible plant defense compounds in this context. The impact of 24 grapevine phenolic compounds was determined on 6 major wood decay fungi by an in vitro agar plate assay. Hydroxystilbenoids, especially oligomers such as miyabenol C, isohopeaphenol, and vitisin A and B, greatly reduced the growth of the fungi, except that of Phaeoacremonium aleophilum . A detailed investigation in 10 Botryosphaeriaceae strains revealed that all of the studied members of this family display a common susceptibility to phenolics that is more or less significant. Then we undertook a quantitative analysis of stilbenoid content in grapevine plantlets inoculated with Botryosphaeriaceae to investigate whether in planta these fungi have to counteract the most active phenolics. On the basis of our results, the possible role of phenolics in grapevine defense against trunk disease agents is discussed.
Nematicidal activity against Heterodera zeae infective stage larvae assessed as nematode mortality at 1% under dark conditions measured 72 hr post dose by stereoscopic microscopy
|
Heterodera zeae
|
70.0
%
|
|
Journal : J Agric Food Chem
Title : Isolation of nematicidal compounds from Tagetes patula L. yellow flowers: structure-activity relationship studies against cyst nematode Heterodera zeae infective stage larvae.
Year : 2011
Volume : 59
Issue : 17
First Page : 9080
Last Page : 9093
Authors : Faizi S, Fayyaz S, Bano S, Iqbal EY, Lubna, Siddiqi H, Naz A.
Abstract : Bioassay-guided isolation studies on the extracts of yellow flowers of Tagetes patula L. against the Heterodera zeae were carried out to identify phytochemicals lethal to this economically important cyst nematode. In vitro investigation of a polar extract and fractions showing activity led to the isolation of phenolic compounds (flavonoids and phenolic acids). In the nonpolar extract, a few fatty acids, their methyl esters, and thiophenes (including α-terthienyl) were detected. In studies of compounds obtained commercially, α-terthienyl and gallic and linoleic acids showed 100% mortality at concentrations of 0.125% after 24 h. Assessment of structure-activity relationships revealed that an increase in the number of hydroxyl groups in phenolic acids increased the activity; with fatty acids, activity depended on chain length and the number and position of double bonds. Crude extracts of the flowers of different colors also have promising activity.
Nematicidal activity against Heterodera zeae infective stage larvae assessed as nematode mortality at 1% under dark conditions measured 48 hr post dose by stereoscopic microscopy
|
Heterodera zeae
|
70.0
%
|
|
Journal : J Agric Food Chem
Title : Isolation of nematicidal compounds from Tagetes patula L. yellow flowers: structure-activity relationship studies against cyst nematode Heterodera zeae infective stage larvae.
Year : 2011
Volume : 59
Issue : 17
First Page : 9080
Last Page : 9093
Authors : Faizi S, Fayyaz S, Bano S, Iqbal EY, Lubna, Siddiqi H, Naz A.
Abstract : Bioassay-guided isolation studies on the extracts of yellow flowers of Tagetes patula L. against the Heterodera zeae were carried out to identify phytochemicals lethal to this economically important cyst nematode. In vitro investigation of a polar extract and fractions showing activity led to the isolation of phenolic compounds (flavonoids and phenolic acids). In the nonpolar extract, a few fatty acids, their methyl esters, and thiophenes (including α-terthienyl) were detected. In studies of compounds obtained commercially, α-terthienyl and gallic and linoleic acids showed 100% mortality at concentrations of 0.125% after 24 h. Assessment of structure-activity relationships revealed that an increase in the number of hydroxyl groups in phenolic acids increased the activity; with fatty acids, activity depended on chain length and the number and position of double bonds. Crude extracts of the flowers of different colors also have promising activity.
Nematicidal activity against Heterodera zeae infective stage larvae assessed as nematode mortality at 1% under light conditions measured 72 hr post dose by stereoscopic microscopy
|
Heterodera zeae
|
70.0
%
|
|
Journal : J Agric Food Chem
Title : Isolation of nematicidal compounds from Tagetes patula L. yellow flowers: structure-activity relationship studies against cyst nematode Heterodera zeae infective stage larvae.
Year : 2011
Volume : 59
Issue : 17
First Page : 9080
Last Page : 9093
Authors : Faizi S, Fayyaz S, Bano S, Iqbal EY, Lubna, Siddiqi H, Naz A.
Abstract : Bioassay-guided isolation studies on the extracts of yellow flowers of Tagetes patula L. against the Heterodera zeae were carried out to identify phytochemicals lethal to this economically important cyst nematode. In vitro investigation of a polar extract and fractions showing activity led to the isolation of phenolic compounds (flavonoids and phenolic acids). In the nonpolar extract, a few fatty acids, their methyl esters, and thiophenes (including α-terthienyl) were detected. In studies of compounds obtained commercially, α-terthienyl and gallic and linoleic acids showed 100% mortality at concentrations of 0.125% after 24 h. Assessment of structure-activity relationships revealed that an increase in the number of hydroxyl groups in phenolic acids increased the activity; with fatty acids, activity depended on chain length and the number and position of double bonds. Crude extracts of the flowers of different colors also have promising activity.
Nematicidal activity against Heterodera zeae infective stage larvae assessed as nematode mortality at 1% under light conditions measured 48 hr post dose by stereoscopic microscopy
|
Heterodera zeae
|
50.0
%
|
|
Journal : J Agric Food Chem
Title : Isolation of nematicidal compounds from Tagetes patula L. yellow flowers: structure-activity relationship studies against cyst nematode Heterodera zeae infective stage larvae.
Year : 2011
Volume : 59
Issue : 17
First Page : 9080
Last Page : 9093
Authors : Faizi S, Fayyaz S, Bano S, Iqbal EY, Lubna, Siddiqi H, Naz A.
Abstract : Bioassay-guided isolation studies on the extracts of yellow flowers of Tagetes patula L. against the Heterodera zeae were carried out to identify phytochemicals lethal to this economically important cyst nematode. In vitro investigation of a polar extract and fractions showing activity led to the isolation of phenolic compounds (flavonoids and phenolic acids). In the nonpolar extract, a few fatty acids, their methyl esters, and thiophenes (including α-terthienyl) were detected. In studies of compounds obtained commercially, α-terthienyl and gallic and linoleic acids showed 100% mortality at concentrations of 0.125% after 24 h. Assessment of structure-activity relationships revealed that an increase in the number of hydroxyl groups in phenolic acids increased the activity; with fatty acids, activity depended on chain length and the number and position of double bonds. Crude extracts of the flowers of different colors also have promising activity.
Nematicidal activity against Heterodera zeae infective stage larvae assessed as nematode mortality at 0.125% under dark conditions measured 72 hr post dose by stereoscopic microscopy
|
Heterodera zeae
|
40.0
%
|
|
Journal : J Agric Food Chem
Title : Isolation of nematicidal compounds from Tagetes patula L. yellow flowers: structure-activity relationship studies against cyst nematode Heterodera zeae infective stage larvae.
Year : 2011
Volume : 59
Issue : 17
First Page : 9080
Last Page : 9093
Authors : Faizi S, Fayyaz S, Bano S, Iqbal EY, Lubna, Siddiqi H, Naz A.
Abstract : Bioassay-guided isolation studies on the extracts of yellow flowers of Tagetes patula L. against the Heterodera zeae were carried out to identify phytochemicals lethal to this economically important cyst nematode. In vitro investigation of a polar extract and fractions showing activity led to the isolation of phenolic compounds (flavonoids and phenolic acids). In the nonpolar extract, a few fatty acids, their methyl esters, and thiophenes (including α-terthienyl) were detected. In studies of compounds obtained commercially, α-terthienyl and gallic and linoleic acids showed 100% mortality at concentrations of 0.125% after 24 h. Assessment of structure-activity relationships revealed that an increase in the number of hydroxyl groups in phenolic acids increased the activity; with fatty acids, activity depended on chain length and the number and position of double bonds. Crude extracts of the flowers of different colors also have promising activity.
Nematicidal activity against Heterodera zeae infective stage larvae assessed as nematode mortality at 0.25% under dark conditions measured 72 hr post dose by stereoscopic microscopy
|
Heterodera zeae
|
50.0
%
|
|
Journal : J Agric Food Chem
Title : Isolation of nematicidal compounds from Tagetes patula L. yellow flowers: structure-activity relationship studies against cyst nematode Heterodera zeae infective stage larvae.
Year : 2011
Volume : 59
Issue : 17
First Page : 9080
Last Page : 9093
Authors : Faizi S, Fayyaz S, Bano S, Iqbal EY, Lubna, Siddiqi H, Naz A.
Abstract : Bioassay-guided isolation studies on the extracts of yellow flowers of Tagetes patula L. against the Heterodera zeae were carried out to identify phytochemicals lethal to this economically important cyst nematode. In vitro investigation of a polar extract and fractions showing activity led to the isolation of phenolic compounds (flavonoids and phenolic acids). In the nonpolar extract, a few fatty acids, their methyl esters, and thiophenes (including α-terthienyl) were detected. In studies of compounds obtained commercially, α-terthienyl and gallic and linoleic acids showed 100% mortality at concentrations of 0.125% after 24 h. Assessment of structure-activity relationships revealed that an increase in the number of hydroxyl groups in phenolic acids increased the activity; with fatty acids, activity depended on chain length and the number and position of double bonds. Crude extracts of the flowers of different colors also have promising activity.
Nematicidal activity against Heterodera zeae infective stage larvae assessed as nematode mortality at 0.5% under dark conditions measured 72 hr post dose by stereoscopic microscopy
|
Heterodera zeae
|
70.0
%
|
|
Journal : J Agric Food Chem
Title : Isolation of nematicidal compounds from Tagetes patula L. yellow flowers: structure-activity relationship studies against cyst nematode Heterodera zeae infective stage larvae.
Year : 2011
Volume : 59
Issue : 17
First Page : 9080
Last Page : 9093
Authors : Faizi S, Fayyaz S, Bano S, Iqbal EY, Lubna, Siddiqi H, Naz A.
Abstract : Bioassay-guided isolation studies on the extracts of yellow flowers of Tagetes patula L. against the Heterodera zeae were carried out to identify phytochemicals lethal to this economically important cyst nematode. In vitro investigation of a polar extract and fractions showing activity led to the isolation of phenolic compounds (flavonoids and phenolic acids). In the nonpolar extract, a few fatty acids, their methyl esters, and thiophenes (including α-terthienyl) were detected. In studies of compounds obtained commercially, α-terthienyl and gallic and linoleic acids showed 100% mortality at concentrations of 0.125% after 24 h. Assessment of structure-activity relationships revealed that an increase in the number of hydroxyl groups in phenolic acids increased the activity; with fatty acids, activity depended on chain length and the number and position of double bonds. Crude extracts of the flowers of different colors also have promising activity.
Nematicidal activity against Heterodera zeae infective stage larvae assessed as nematode mortality at 0.5% under dark conditions measured 48 hr post dose by stereoscopic microscopy
|
Heterodera zeae
|
50.0
%
|
|
Journal : J Agric Food Chem
Title : Isolation of nematicidal compounds from Tagetes patula L. yellow flowers: structure-activity relationship studies against cyst nematode Heterodera zeae infective stage larvae.
Year : 2011
Volume : 59
Issue : 17
First Page : 9080
Last Page : 9093
Authors : Faizi S, Fayyaz S, Bano S, Iqbal EY, Lubna, Siddiqi H, Naz A.
Abstract : Bioassay-guided isolation studies on the extracts of yellow flowers of Tagetes patula L. against the Heterodera zeae were carried out to identify phytochemicals lethal to this economically important cyst nematode. In vitro investigation of a polar extract and fractions showing activity led to the isolation of phenolic compounds (flavonoids and phenolic acids). In the nonpolar extract, a few fatty acids, their methyl esters, and thiophenes (including α-terthienyl) were detected. In studies of compounds obtained commercially, α-terthienyl and gallic and linoleic acids showed 100% mortality at concentrations of 0.125% after 24 h. Assessment of structure-activity relationships revealed that an increase in the number of hydroxyl groups in phenolic acids increased the activity; with fatty acids, activity depended on chain length and the number and position of double bonds. Crude extracts of the flowers of different colors also have promising activity.
Nematicidal activity against Heterodera zeae infective stage larvae assessed as nematode mortality at 0.125% under light conditions measured 72 hr post dose by stereoscopic microscopy
|
Heterodera zeae
|
80.0
%
|
|
Journal : J Agric Food Chem
Title : Isolation of nematicidal compounds from Tagetes patula L. yellow flowers: structure-activity relationship studies against cyst nematode Heterodera zeae infective stage larvae.
Year : 2011
Volume : 59
Issue : 17
First Page : 9080
Last Page : 9093
Authors : Faizi S, Fayyaz S, Bano S, Iqbal EY, Lubna, Siddiqi H, Naz A.
Abstract : Bioassay-guided isolation studies on the extracts of yellow flowers of Tagetes patula L. against the Heterodera zeae were carried out to identify phytochemicals lethal to this economically important cyst nematode. In vitro investigation of a polar extract and fractions showing activity led to the isolation of phenolic compounds (flavonoids and phenolic acids). In the nonpolar extract, a few fatty acids, their methyl esters, and thiophenes (including α-terthienyl) were detected. In studies of compounds obtained commercially, α-terthienyl and gallic and linoleic acids showed 100% mortality at concentrations of 0.125% after 24 h. Assessment of structure-activity relationships revealed that an increase in the number of hydroxyl groups in phenolic acids increased the activity; with fatty acids, activity depended on chain length and the number and position of double bonds. Crude extracts of the flowers of different colors also have promising activity.
Nematicidal activity against Heterodera zeae infective stage larvae assessed as nematode mortality at 0.25% under light conditions measured 72 hr post dose by stereoscopic microscopy
|
Heterodera zeae
|
70.0
%
|
|
Journal : J Agric Food Chem
Title : Isolation of nematicidal compounds from Tagetes patula L. yellow flowers: structure-activity relationship studies against cyst nematode Heterodera zeae infective stage larvae.
Year : 2011
Volume : 59
Issue : 17
First Page : 9080
Last Page : 9093
Authors : Faizi S, Fayyaz S, Bano S, Iqbal EY, Lubna, Siddiqi H, Naz A.
Abstract : Bioassay-guided isolation studies on the extracts of yellow flowers of Tagetes patula L. against the Heterodera zeae were carried out to identify phytochemicals lethal to this economically important cyst nematode. In vitro investigation of a polar extract and fractions showing activity led to the isolation of phenolic compounds (flavonoids and phenolic acids). In the nonpolar extract, a few fatty acids, their methyl esters, and thiophenes (including α-terthienyl) were detected. In studies of compounds obtained commercially, α-terthienyl and gallic and linoleic acids showed 100% mortality at concentrations of 0.125% after 24 h. Assessment of structure-activity relationships revealed that an increase in the number of hydroxyl groups in phenolic acids increased the activity; with fatty acids, activity depended on chain length and the number and position of double bonds. Crude extracts of the flowers of different colors also have promising activity.
Nematicidal activity against Heterodera zeae infective stage larvae assessed as nematode mortality at 0.5% under light conditions measured 72 hr post dose by stereoscopic microscopy
|
Heterodera zeae
|
80.0
%
|
|
Journal : J Agric Food Chem
Title : Isolation of nematicidal compounds from Tagetes patula L. yellow flowers: structure-activity relationship studies against cyst nematode Heterodera zeae infective stage larvae.
Year : 2011
Volume : 59
Issue : 17
First Page : 9080
Last Page : 9093
Authors : Faizi S, Fayyaz S, Bano S, Iqbal EY, Lubna, Siddiqi H, Naz A.
Abstract : Bioassay-guided isolation studies on the extracts of yellow flowers of Tagetes patula L. against the Heterodera zeae were carried out to identify phytochemicals lethal to this economically important cyst nematode. In vitro investigation of a polar extract and fractions showing activity led to the isolation of phenolic compounds (flavonoids and phenolic acids). In the nonpolar extract, a few fatty acids, their methyl esters, and thiophenes (including α-terthienyl) were detected. In studies of compounds obtained commercially, α-terthienyl and gallic and linoleic acids showed 100% mortality at concentrations of 0.125% after 24 h. Assessment of structure-activity relationships revealed that an increase in the number of hydroxyl groups in phenolic acids increased the activity; with fatty acids, activity depended on chain length and the number and position of double bonds. Crude extracts of the flowers of different colors also have promising activity.
Nematicidal activity against Heterodera zeae infective stage larvae assessed as nematode mortality at 0.5% under light conditions measured 48 hr post dose by stereoscopic microscopy
|
Heterodera zeae
|
50.0
%
|
|
Journal : J Agric Food Chem
Title : Isolation of nematicidal compounds from Tagetes patula L. yellow flowers: structure-activity relationship studies against cyst nematode Heterodera zeae infective stage larvae.
Year : 2011
Volume : 59
Issue : 17
First Page : 9080
Last Page : 9093
Authors : Faizi S, Fayyaz S, Bano S, Iqbal EY, Lubna, Siddiqi H, Naz A.
Abstract : Bioassay-guided isolation studies on the extracts of yellow flowers of Tagetes patula L. against the Heterodera zeae were carried out to identify phytochemicals lethal to this economically important cyst nematode. In vitro investigation of a polar extract and fractions showing activity led to the isolation of phenolic compounds (flavonoids and phenolic acids). In the nonpolar extract, a few fatty acids, their methyl esters, and thiophenes (including α-terthienyl) were detected. In studies of compounds obtained commercially, α-terthienyl and gallic and linoleic acids showed 100% mortality at concentrations of 0.125% after 24 h. Assessment of structure-activity relationships revealed that an increase in the number of hydroxyl groups in phenolic acids increased the activity; with fatty acids, activity depended on chain length and the number and position of double bonds. Crude extracts of the flowers of different colors also have promising activity.
Nematicidal activity against Heterodera zeae infective stage larvae assessed as nematode mortality at 0.125% under dark conditions measured 5 to 60 min post dose by stereoscopic microscopy
|
Heterodera zeae
|
None
|
|
Journal : J Agric Food Chem
Title : Isolation of nematicidal compounds from Tagetes patula L. yellow flowers: structure-activity relationship studies against cyst nematode Heterodera zeae infective stage larvae.
Year : 2011
Volume : 59
Issue : 17
First Page : 9080
Last Page : 9093
Authors : Faizi S, Fayyaz S, Bano S, Iqbal EY, Lubna, Siddiqi H, Naz A.
Abstract : Bioassay-guided isolation studies on the extracts of yellow flowers of Tagetes patula L. against the Heterodera zeae were carried out to identify phytochemicals lethal to this economically important cyst nematode. In vitro investigation of a polar extract and fractions showing activity led to the isolation of phenolic compounds (flavonoids and phenolic acids). In the nonpolar extract, a few fatty acids, their methyl esters, and thiophenes (including α-terthienyl) were detected. In studies of compounds obtained commercially, α-terthienyl and gallic and linoleic acids showed 100% mortality at concentrations of 0.125% after 24 h. Assessment of structure-activity relationships revealed that an increase in the number of hydroxyl groups in phenolic acids increased the activity; with fatty acids, activity depended on chain length and the number and position of double bonds. Crude extracts of the flowers of different colors also have promising activity.
Nematicidal activity against Heterodera zeae infective stage larvae assessed as nematode mortality at 0.25% under dark conditions measured 5 to 60 min post dose by stereoscopic microscopy
|
Heterodera zeae
|
None
|
|
Journal : J Agric Food Chem
Title : Isolation of nematicidal compounds from Tagetes patula L. yellow flowers: structure-activity relationship studies against cyst nematode Heterodera zeae infective stage larvae.
Year : 2011
Volume : 59
Issue : 17
First Page : 9080
Last Page : 9093
Authors : Faizi S, Fayyaz S, Bano S, Iqbal EY, Lubna, Siddiqi H, Naz A.
Abstract : Bioassay-guided isolation studies on the extracts of yellow flowers of Tagetes patula L. against the Heterodera zeae were carried out to identify phytochemicals lethal to this economically important cyst nematode. In vitro investigation of a polar extract and fractions showing activity led to the isolation of phenolic compounds (flavonoids and phenolic acids). In the nonpolar extract, a few fatty acids, their methyl esters, and thiophenes (including α-terthienyl) were detected. In studies of compounds obtained commercially, α-terthienyl and gallic and linoleic acids showed 100% mortality at concentrations of 0.125% after 24 h. Assessment of structure-activity relationships revealed that an increase in the number of hydroxyl groups in phenolic acids increased the activity; with fatty acids, activity depended on chain length and the number and position of double bonds. Crude extracts of the flowers of different colors also have promising activity.
Nematicidal activity against Heterodera zeae infective stage larvae assessed as nematode mortality at 0.5% under dark conditions measured 5 to 60 min post dose by stereoscopic microscopy
|
Heterodera zeae
|
None
|
|
Journal : J Agric Food Chem
Title : Isolation of nematicidal compounds from Tagetes patula L. yellow flowers: structure-activity relationship studies against cyst nematode Heterodera zeae infective stage larvae.
Year : 2011
Volume : 59
Issue : 17
First Page : 9080
Last Page : 9093
Authors : Faizi S, Fayyaz S, Bano S, Iqbal EY, Lubna, Siddiqi H, Naz A.
Abstract : Bioassay-guided isolation studies on the extracts of yellow flowers of Tagetes patula L. against the Heterodera zeae were carried out to identify phytochemicals lethal to this economically important cyst nematode. In vitro investigation of a polar extract and fractions showing activity led to the isolation of phenolic compounds (flavonoids and phenolic acids). In the nonpolar extract, a few fatty acids, their methyl esters, and thiophenes (including α-terthienyl) were detected. In studies of compounds obtained commercially, α-terthienyl and gallic and linoleic acids showed 100% mortality at concentrations of 0.125% after 24 h. Assessment of structure-activity relationships revealed that an increase in the number of hydroxyl groups in phenolic acids increased the activity; with fatty acids, activity depended on chain length and the number and position of double bonds. Crude extracts of the flowers of different colors also have promising activity.
Nematicidal activity against Heterodera zeae infective stage larvae assessed as nematode mortality at 1% under dark conditions measured 5 to 60 min post dose by stereoscopic microscopy
|
Heterodera zeae
|
None
|
|
Journal : J Agric Food Chem
Title : Isolation of nematicidal compounds from Tagetes patula L. yellow flowers: structure-activity relationship studies against cyst nematode Heterodera zeae infective stage larvae.
Year : 2011
Volume : 59
Issue : 17
First Page : 9080
Last Page : 9093
Authors : Faizi S, Fayyaz S, Bano S, Iqbal EY, Lubna, Siddiqi H, Naz A.
Abstract : Bioassay-guided isolation studies on the extracts of yellow flowers of Tagetes patula L. against the Heterodera zeae were carried out to identify phytochemicals lethal to this economically important cyst nematode. In vitro investigation of a polar extract and fractions showing activity led to the isolation of phenolic compounds (flavonoids and phenolic acids). In the nonpolar extract, a few fatty acids, their methyl esters, and thiophenes (including α-terthienyl) were detected. In studies of compounds obtained commercially, α-terthienyl and gallic and linoleic acids showed 100% mortality at concentrations of 0.125% after 24 h. Assessment of structure-activity relationships revealed that an increase in the number of hydroxyl groups in phenolic acids increased the activity; with fatty acids, activity depended on chain length and the number and position of double bonds. Crude extracts of the flowers of different colors also have promising activity.
Nematicidal activity against Heterodera zeae infective stage larvae assessed as nematode mortality at 2% under dark conditions measured 5 to 60 min post dose by stereoscopic microscopy
|
Heterodera zeae
|
None
|
|
Journal : J Agric Food Chem
Title : Isolation of nematicidal compounds from Tagetes patula L. yellow flowers: structure-activity relationship studies against cyst nematode Heterodera zeae infective stage larvae.
Year : 2011
Volume : 59
Issue : 17
First Page : 9080
Last Page : 9093
Authors : Faizi S, Fayyaz S, Bano S, Iqbal EY, Lubna, Siddiqi H, Naz A.
Abstract : Bioassay-guided isolation studies on the extracts of yellow flowers of Tagetes patula L. against the Heterodera zeae were carried out to identify phytochemicals lethal to this economically important cyst nematode. In vitro investigation of a polar extract and fractions showing activity led to the isolation of phenolic compounds (flavonoids and phenolic acids). In the nonpolar extract, a few fatty acids, their methyl esters, and thiophenes (including α-terthienyl) were detected. In studies of compounds obtained commercially, α-terthienyl and gallic and linoleic acids showed 100% mortality at concentrations of 0.125% after 24 h. Assessment of structure-activity relationships revealed that an increase in the number of hydroxyl groups in phenolic acids increased the activity; with fatty acids, activity depended on chain length and the number and position of double bonds. Crude extracts of the flowers of different colors also have promising activity.
Nematicidal activity against Heterodera zeae infective stage larvae assessed as nematode mortality at 5% under dark conditions measured 5 to 60 min post dose by stereoscopic microscopy
|
Heterodera zeae
|
None
|
|
Journal : J Agric Food Chem
Title : Isolation of nematicidal compounds from Tagetes patula L. yellow flowers: structure-activity relationship studies against cyst nematode Heterodera zeae infective stage larvae.
Year : 2011
Volume : 59
Issue : 17
First Page : 9080
Last Page : 9093
Authors : Faizi S, Fayyaz S, Bano S, Iqbal EY, Lubna, Siddiqi H, Naz A.
Abstract : Bioassay-guided isolation studies on the extracts of yellow flowers of Tagetes patula L. against the Heterodera zeae were carried out to identify phytochemicals lethal to this economically important cyst nematode. In vitro investigation of a polar extract and fractions showing activity led to the isolation of phenolic compounds (flavonoids and phenolic acids). In the nonpolar extract, a few fatty acids, their methyl esters, and thiophenes (including α-terthienyl) were detected. In studies of compounds obtained commercially, α-terthienyl and gallic and linoleic acids showed 100% mortality at concentrations of 0.125% after 24 h. Assessment of structure-activity relationships revealed that an increase in the number of hydroxyl groups in phenolic acids increased the activity; with fatty acids, activity depended on chain length and the number and position of double bonds. Crude extracts of the flowers of different colors also have promising activity.
Nematicidal activity against Heterodera zeae infective stage larvae assessed as nematode mortality at 0.125% under light conditions measured 5 to 60 min post dose by stereoscopic microscopy
|
Heterodera zeae
|
None
|
|
Journal : J Agric Food Chem
Title : Isolation of nematicidal compounds from Tagetes patula L. yellow flowers: structure-activity relationship studies against cyst nematode Heterodera zeae infective stage larvae.
Year : 2011
Volume : 59
Issue : 17
First Page : 9080
Last Page : 9093
Authors : Faizi S, Fayyaz S, Bano S, Iqbal EY, Lubna, Siddiqi H, Naz A.
Abstract : Bioassay-guided isolation studies on the extracts of yellow flowers of Tagetes patula L. against the Heterodera zeae were carried out to identify phytochemicals lethal to this economically important cyst nematode. In vitro investigation of a polar extract and fractions showing activity led to the isolation of phenolic compounds (flavonoids and phenolic acids). In the nonpolar extract, a few fatty acids, their methyl esters, and thiophenes (including α-terthienyl) were detected. In studies of compounds obtained commercially, α-terthienyl and gallic and linoleic acids showed 100% mortality at concentrations of 0.125% after 24 h. Assessment of structure-activity relationships revealed that an increase in the number of hydroxyl groups in phenolic acids increased the activity; with fatty acids, activity depended on chain length and the number and position of double bonds. Crude extracts of the flowers of different colors also have promising activity.
Nematicidal activity against Heterodera zeae infective stage larvae assessed as nematode mortality at 0.25% under light conditions measured 5 to 60 min post dose by stereoscopic microscopy
|
Heterodera zeae
|
None
|
|
Journal : J Agric Food Chem
Title : Isolation of nematicidal compounds from Tagetes patula L. yellow flowers: structure-activity relationship studies against cyst nematode Heterodera zeae infective stage larvae.
Year : 2011
Volume : 59
Issue : 17
First Page : 9080
Last Page : 9093
Authors : Faizi S, Fayyaz S, Bano S, Iqbal EY, Lubna, Siddiqi H, Naz A.
Abstract : Bioassay-guided isolation studies on the extracts of yellow flowers of Tagetes patula L. against the Heterodera zeae were carried out to identify phytochemicals lethal to this economically important cyst nematode. In vitro investigation of a polar extract and fractions showing activity led to the isolation of phenolic compounds (flavonoids and phenolic acids). In the nonpolar extract, a few fatty acids, their methyl esters, and thiophenes (including α-terthienyl) were detected. In studies of compounds obtained commercially, α-terthienyl and gallic and linoleic acids showed 100% mortality at concentrations of 0.125% after 24 h. Assessment of structure-activity relationships revealed that an increase in the number of hydroxyl groups in phenolic acids increased the activity; with fatty acids, activity depended on chain length and the number and position of double bonds. Crude extracts of the flowers of different colors also have promising activity.
Nematicidal activity against Heterodera zeae infective stage larvae assessed as nematode mortality at 0.5% under light conditions measured 5 to 60 min post dose by stereoscopic microscopy
|
Heterodera zeae
|
None
|
|
Journal : J Agric Food Chem
Title : Isolation of nematicidal compounds from Tagetes patula L. yellow flowers: structure-activity relationship studies against cyst nematode Heterodera zeae infective stage larvae.
Year : 2011
Volume : 59
Issue : 17
First Page : 9080
Last Page : 9093
Authors : Faizi S, Fayyaz S, Bano S, Iqbal EY, Lubna, Siddiqi H, Naz A.
Abstract : Bioassay-guided isolation studies on the extracts of yellow flowers of Tagetes patula L. against the Heterodera zeae were carried out to identify phytochemicals lethal to this economically important cyst nematode. In vitro investigation of a polar extract and fractions showing activity led to the isolation of phenolic compounds (flavonoids and phenolic acids). In the nonpolar extract, a few fatty acids, their methyl esters, and thiophenes (including α-terthienyl) were detected. In studies of compounds obtained commercially, α-terthienyl and gallic and linoleic acids showed 100% mortality at concentrations of 0.125% after 24 h. Assessment of structure-activity relationships revealed that an increase in the number of hydroxyl groups in phenolic acids increased the activity; with fatty acids, activity depended on chain length and the number and position of double bonds. Crude extracts of the flowers of different colors also have promising activity.
Nematicidal activity against Heterodera zeae infective stage larvae assessed as nematode mortality at 1% under light conditions measured 5 to 60 min post dose by stereoscopic microscopy
|
Heterodera zeae
|
None
|
|
Journal : J Agric Food Chem
Title : Isolation of nematicidal compounds from Tagetes patula L. yellow flowers: structure-activity relationship studies against cyst nematode Heterodera zeae infective stage larvae.
Year : 2011
Volume : 59
Issue : 17
First Page : 9080
Last Page : 9093
Authors : Faizi S, Fayyaz S, Bano S, Iqbal EY, Lubna, Siddiqi H, Naz A.
Abstract : Bioassay-guided isolation studies on the extracts of yellow flowers of Tagetes patula L. against the Heterodera zeae were carried out to identify phytochemicals lethal to this economically important cyst nematode. In vitro investigation of a polar extract and fractions showing activity led to the isolation of phenolic compounds (flavonoids and phenolic acids). In the nonpolar extract, a few fatty acids, their methyl esters, and thiophenes (including α-terthienyl) were detected. In studies of compounds obtained commercially, α-terthienyl and gallic and linoleic acids showed 100% mortality at concentrations of 0.125% after 24 h. Assessment of structure-activity relationships revealed that an increase in the number of hydroxyl groups in phenolic acids increased the activity; with fatty acids, activity depended on chain length and the number and position of double bonds. Crude extracts of the flowers of different colors also have promising activity.
Nematicidal activity against Heterodera zeae infective stage larvae assessed as nematode mortality at 2% under light conditions measured 5 to 60 min post dose by stereoscopic microscopy
|
Heterodera zeae
|
None
|
|
Journal : J Agric Food Chem
Title : Isolation of nematicidal compounds from Tagetes patula L. yellow flowers: structure-activity relationship studies against cyst nematode Heterodera zeae infective stage larvae.
Year : 2011
Volume : 59
Issue : 17
First Page : 9080
Last Page : 9093
Authors : Faizi S, Fayyaz S, Bano S, Iqbal EY, Lubna, Siddiqi H, Naz A.
Abstract : Bioassay-guided isolation studies on the extracts of yellow flowers of Tagetes patula L. against the Heterodera zeae were carried out to identify phytochemicals lethal to this economically important cyst nematode. In vitro investigation of a polar extract and fractions showing activity led to the isolation of phenolic compounds (flavonoids and phenolic acids). In the nonpolar extract, a few fatty acids, their methyl esters, and thiophenes (including α-terthienyl) were detected. In studies of compounds obtained commercially, α-terthienyl and gallic and linoleic acids showed 100% mortality at concentrations of 0.125% after 24 h. Assessment of structure-activity relationships revealed that an increase in the number of hydroxyl groups in phenolic acids increased the activity; with fatty acids, activity depended on chain length and the number and position of double bonds. Crude extracts of the flowers of different colors also have promising activity.
Nematicidal activity against Heterodera zeae infective stage larvae assessed as nematode mortality at 5% under light conditions measured 5 to 60 min post dose by stereoscopic microscopy
|
Heterodera zeae
|
None
|
|
Journal : J Agric Food Chem
Title : Isolation of nematicidal compounds from Tagetes patula L. yellow flowers: structure-activity relationship studies against cyst nematode Heterodera zeae infective stage larvae.
Year : 2011
Volume : 59
Issue : 17
First Page : 9080
Last Page : 9093
Authors : Faizi S, Fayyaz S, Bano S, Iqbal EY, Lubna, Siddiqi H, Naz A.
Abstract : Bioassay-guided isolation studies on the extracts of yellow flowers of Tagetes patula L. against the Heterodera zeae were carried out to identify phytochemicals lethal to this economically important cyst nematode. In vitro investigation of a polar extract and fractions showing activity led to the isolation of phenolic compounds (flavonoids and phenolic acids). In the nonpolar extract, a few fatty acids, their methyl esters, and thiophenes (including α-terthienyl) were detected. In studies of compounds obtained commercially, α-terthienyl and gallic and linoleic acids showed 100% mortality at concentrations of 0.125% after 24 h. Assessment of structure-activity relationships revealed that an increase in the number of hydroxyl groups in phenolic acids increased the activity; with fatty acids, activity depended on chain length and the number and position of double bonds. Crude extracts of the flowers of different colors also have promising activity.
Nematicidal activity against Heterodera zeae infective stage larvae assessed as nematode mortality at 0.125% under dark conditions measured 48 hr post dose by stereoscopic microscopy
|
Heterodera zeae
|
40.0
%
|
|
Journal : J Agric Food Chem
Title : Isolation of nematicidal compounds from Tagetes patula L. yellow flowers: structure-activity relationship studies against cyst nematode Heterodera zeae infective stage larvae.
Year : 2011
Volume : 59
Issue : 17
First Page : 9080
Last Page : 9093
Authors : Faizi S, Fayyaz S, Bano S, Iqbal EY, Lubna, Siddiqi H, Naz A.
Abstract : Bioassay-guided isolation studies on the extracts of yellow flowers of Tagetes patula L. against the Heterodera zeae were carried out to identify phytochemicals lethal to this economically important cyst nematode. In vitro investigation of a polar extract and fractions showing activity led to the isolation of phenolic compounds (flavonoids and phenolic acids). In the nonpolar extract, a few fatty acids, their methyl esters, and thiophenes (including α-terthienyl) were detected. In studies of compounds obtained commercially, α-terthienyl and gallic and linoleic acids showed 100% mortality at concentrations of 0.125% after 24 h. Assessment of structure-activity relationships revealed that an increase in the number of hydroxyl groups in phenolic acids increased the activity; with fatty acids, activity depended on chain length and the number and position of double bonds. Crude extracts of the flowers of different colors also have promising activity.
Nematicidal activity against Heterodera zeae infective stage larvae assessed as nematode mortality at 0.25% under dark conditions measured 48 hr post dose by stereoscopic microscopy
|
Heterodera zeae
|
50.0
%
|
|
Journal : J Agric Food Chem
Title : Isolation of nematicidal compounds from Tagetes patula L. yellow flowers: structure-activity relationship studies against cyst nematode Heterodera zeae infective stage larvae.
Year : 2011
Volume : 59
Issue : 17
First Page : 9080
Last Page : 9093
Authors : Faizi S, Fayyaz S, Bano S, Iqbal EY, Lubna, Siddiqi H, Naz A.
Abstract : Bioassay-guided isolation studies on the extracts of yellow flowers of Tagetes patula L. against the Heterodera zeae were carried out to identify phytochemicals lethal to this economically important cyst nematode. In vitro investigation of a polar extract and fractions showing activity led to the isolation of phenolic compounds (flavonoids and phenolic acids). In the nonpolar extract, a few fatty acids, their methyl esters, and thiophenes (including α-terthienyl) were detected. In studies of compounds obtained commercially, α-terthienyl and gallic and linoleic acids showed 100% mortality at concentrations of 0.125% after 24 h. Assessment of structure-activity relationships revealed that an increase in the number of hydroxyl groups in phenolic acids increased the activity; with fatty acids, activity depended on chain length and the number and position of double bonds. Crude extracts of the flowers of different colors also have promising activity.
Nematicidal activity against Heterodera zeae infective stage larvae assessed as nematode mortality at 0.125% under dark conditions measured 24 hr post dose by stereoscopic microscopy
|
Heterodera zeae
|
40.0
%
|
|
Journal : J Agric Food Chem
Title : Isolation of nematicidal compounds from Tagetes patula L. yellow flowers: structure-activity relationship studies against cyst nematode Heterodera zeae infective stage larvae.
Year : 2011
Volume : 59
Issue : 17
First Page : 9080
Last Page : 9093
Authors : Faizi S, Fayyaz S, Bano S, Iqbal EY, Lubna, Siddiqi H, Naz A.
Abstract : Bioassay-guided isolation studies on the extracts of yellow flowers of Tagetes patula L. against the Heterodera zeae were carried out to identify phytochemicals lethal to this economically important cyst nematode. In vitro investigation of a polar extract and fractions showing activity led to the isolation of phenolic compounds (flavonoids and phenolic acids). In the nonpolar extract, a few fatty acids, their methyl esters, and thiophenes (including α-terthienyl) were detected. In studies of compounds obtained commercially, α-terthienyl and gallic and linoleic acids showed 100% mortality at concentrations of 0.125% after 24 h. Assessment of structure-activity relationships revealed that an increase in the number of hydroxyl groups in phenolic acids increased the activity; with fatty acids, activity depended on chain length and the number and position of double bonds. Crude extracts of the flowers of different colors also have promising activity.
Nematicidal activity against Heterodera zeae infective stage larvae assessed as nematode mortality at 0.25% under dark conditions measured 24 hr post dose by stereoscopic microscopy
|
Heterodera zeae
|
40.0
%
|
|
Journal : J Agric Food Chem
Title : Isolation of nematicidal compounds from Tagetes patula L. yellow flowers: structure-activity relationship studies against cyst nematode Heterodera zeae infective stage larvae.
Year : 2011
Volume : 59
Issue : 17
First Page : 9080
Last Page : 9093
Authors : Faizi S, Fayyaz S, Bano S, Iqbal EY, Lubna, Siddiqi H, Naz A.
Abstract : Bioassay-guided isolation studies on the extracts of yellow flowers of Tagetes patula L. against the Heterodera zeae were carried out to identify phytochemicals lethal to this economically important cyst nematode. In vitro investigation of a polar extract and fractions showing activity led to the isolation of phenolic compounds (flavonoids and phenolic acids). In the nonpolar extract, a few fatty acids, their methyl esters, and thiophenes (including α-terthienyl) were detected. In studies of compounds obtained commercially, α-terthienyl and gallic and linoleic acids showed 100% mortality at concentrations of 0.125% after 24 h. Assessment of structure-activity relationships revealed that an increase in the number of hydroxyl groups in phenolic acids increased the activity; with fatty acids, activity depended on chain length and the number and position of double bonds. Crude extracts of the flowers of different colors also have promising activity.
Nematicidal activity against Heterodera zeae infective stage larvae assessed as nematode mortality at 0.5% under dark conditions measured 24 hr post dose by stereoscopic microscopy
|
Heterodera zeae
|
40.0
%
|
|
Journal : J Agric Food Chem
Title : Isolation of nematicidal compounds from Tagetes patula L. yellow flowers: structure-activity relationship studies against cyst nematode Heterodera zeae infective stage larvae.
Year : 2011
Volume : 59
Issue : 17
First Page : 9080
Last Page : 9093
Authors : Faizi S, Fayyaz S, Bano S, Iqbal EY, Lubna, Siddiqi H, Naz A.
Abstract : Bioassay-guided isolation studies on the extracts of yellow flowers of Tagetes patula L. against the Heterodera zeae were carried out to identify phytochemicals lethal to this economically important cyst nematode. In vitro investigation of a polar extract and fractions showing activity led to the isolation of phenolic compounds (flavonoids and phenolic acids). In the nonpolar extract, a few fatty acids, their methyl esters, and thiophenes (including α-terthienyl) were detected. In studies of compounds obtained commercially, α-terthienyl and gallic and linoleic acids showed 100% mortality at concentrations of 0.125% after 24 h. Assessment of structure-activity relationships revealed that an increase in the number of hydroxyl groups in phenolic acids increased the activity; with fatty acids, activity depended on chain length and the number and position of double bonds. Crude extracts of the flowers of different colors also have promising activity.
Nematicidal activity against Heterodera zeae infective stage larvae assessed as nematode mortality at 1% under dark conditions measured 24 hr post dose by stereoscopic microscopy
|
Heterodera zeae
|
50.0
%
|
|
Journal : J Agric Food Chem
Title : Isolation of nematicidal compounds from Tagetes patula L. yellow flowers: structure-activity relationship studies against cyst nematode Heterodera zeae infective stage larvae.
Year : 2011
Volume : 59
Issue : 17
First Page : 9080
Last Page : 9093
Authors : Faizi S, Fayyaz S, Bano S, Iqbal EY, Lubna, Siddiqi H, Naz A.
Abstract : Bioassay-guided isolation studies on the extracts of yellow flowers of Tagetes patula L. against the Heterodera zeae were carried out to identify phytochemicals lethal to this economically important cyst nematode. In vitro investigation of a polar extract and fractions showing activity led to the isolation of phenolic compounds (flavonoids and phenolic acids). In the nonpolar extract, a few fatty acids, their methyl esters, and thiophenes (including α-terthienyl) were detected. In studies of compounds obtained commercially, α-terthienyl and gallic and linoleic acids showed 100% mortality at concentrations of 0.125% after 24 h. Assessment of structure-activity relationships revealed that an increase in the number of hydroxyl groups in phenolic acids increased the activity; with fatty acids, activity depended on chain length and the number and position of double bonds. Crude extracts of the flowers of different colors also have promising activity.
Nematicidal activity against Heterodera zeae infective stage larvae assessed as nematode mortality at 0.125% under light conditions measured 48 hr post dose by stereoscopic microscopy
|
Heterodera zeae
|
50.0
%
|
|
Journal : J Agric Food Chem
Title : Isolation of nematicidal compounds from Tagetes patula L. yellow flowers: structure-activity relationship studies against cyst nematode Heterodera zeae infective stage larvae.
Year : 2011
Volume : 59
Issue : 17
First Page : 9080
Last Page : 9093
Authors : Faizi S, Fayyaz S, Bano S, Iqbal EY, Lubna, Siddiqi H, Naz A.
Abstract : Bioassay-guided isolation studies on the extracts of yellow flowers of Tagetes patula L. against the Heterodera zeae were carried out to identify phytochemicals lethal to this economically important cyst nematode. In vitro investigation of a polar extract and fractions showing activity led to the isolation of phenolic compounds (flavonoids and phenolic acids). In the nonpolar extract, a few fatty acids, their methyl esters, and thiophenes (including α-terthienyl) were detected. In studies of compounds obtained commercially, α-terthienyl and gallic and linoleic acids showed 100% mortality at concentrations of 0.125% after 24 h. Assessment of structure-activity relationships revealed that an increase in the number of hydroxyl groups in phenolic acids increased the activity; with fatty acids, activity depended on chain length and the number and position of double bonds. Crude extracts of the flowers of different colors also have promising activity.
Nematicidal activity against Heterodera zeae infective stage larvae assessed as nematode mortality at 0.25% under light conditions measured 48 hr post dose by stereoscopic microscopy
|
Heterodera zeae
|
50.0
%
|
|
Journal : J Agric Food Chem
Title : Isolation of nematicidal compounds from Tagetes patula L. yellow flowers: structure-activity relationship studies against cyst nematode Heterodera zeae infective stage larvae.
Year : 2011
Volume : 59
Issue : 17
First Page : 9080
Last Page : 9093
Authors : Faizi S, Fayyaz S, Bano S, Iqbal EY, Lubna, Siddiqi H, Naz A.
Abstract : Bioassay-guided isolation studies on the extracts of yellow flowers of Tagetes patula L. against the Heterodera zeae were carried out to identify phytochemicals lethal to this economically important cyst nematode. In vitro investigation of a polar extract and fractions showing activity led to the isolation of phenolic compounds (flavonoids and phenolic acids). In the nonpolar extract, a few fatty acids, their methyl esters, and thiophenes (including α-terthienyl) were detected. In studies of compounds obtained commercially, α-terthienyl and gallic and linoleic acids showed 100% mortality at concentrations of 0.125% after 24 h. Assessment of structure-activity relationships revealed that an increase in the number of hydroxyl groups in phenolic acids increased the activity; with fatty acids, activity depended on chain length and the number and position of double bonds. Crude extracts of the flowers of different colors also have promising activity.
Nematicidal activity against Heterodera zeae infective stage larvae assessed as nematode mortality at 0.125% under light conditions measured 24 hr post dose by stereoscopic microscopy
|
Heterodera zeae
|
40.0
%
|
|
Journal : J Agric Food Chem
Title : Isolation of nematicidal compounds from Tagetes patula L. yellow flowers: structure-activity relationship studies against cyst nematode Heterodera zeae infective stage larvae.
Year : 2011
Volume : 59
Issue : 17
First Page : 9080
Last Page : 9093
Authors : Faizi S, Fayyaz S, Bano S, Iqbal EY, Lubna, Siddiqi H, Naz A.
Abstract : Bioassay-guided isolation studies on the extracts of yellow flowers of Tagetes patula L. against the Heterodera zeae were carried out to identify phytochemicals lethal to this economically important cyst nematode. In vitro investigation of a polar extract and fractions showing activity led to the isolation of phenolic compounds (flavonoids and phenolic acids). In the nonpolar extract, a few fatty acids, their methyl esters, and thiophenes (including α-terthienyl) were detected. In studies of compounds obtained commercially, α-terthienyl and gallic and linoleic acids showed 100% mortality at concentrations of 0.125% after 24 h. Assessment of structure-activity relationships revealed that an increase in the number of hydroxyl groups in phenolic acids increased the activity; with fatty acids, activity depended on chain length and the number and position of double bonds. Crude extracts of the flowers of different colors also have promising activity.
Nematicidal activity against Heterodera zeae infective stage larvae assessed as nematode mortality at 0.25% under light conditions measured 24 hr post dose by stereoscopic microscopy
|
Heterodera zeae
|
40.0
%
|
|
Journal : J Agric Food Chem
Title : Isolation of nematicidal compounds from Tagetes patula L. yellow flowers: structure-activity relationship studies against cyst nematode Heterodera zeae infective stage larvae.
Year : 2011
Volume : 59
Issue : 17
First Page : 9080
Last Page : 9093
Authors : Faizi S, Fayyaz S, Bano S, Iqbal EY, Lubna, Siddiqi H, Naz A.
Abstract : Bioassay-guided isolation studies on the extracts of yellow flowers of Tagetes patula L. against the Heterodera zeae were carried out to identify phytochemicals lethal to this economically important cyst nematode. In vitro investigation of a polar extract and fractions showing activity led to the isolation of phenolic compounds (flavonoids and phenolic acids). In the nonpolar extract, a few fatty acids, their methyl esters, and thiophenes (including α-terthienyl) were detected. In studies of compounds obtained commercially, α-terthienyl and gallic and linoleic acids showed 100% mortality at concentrations of 0.125% after 24 h. Assessment of structure-activity relationships revealed that an increase in the number of hydroxyl groups in phenolic acids increased the activity; with fatty acids, activity depended on chain length and the number and position of double bonds. Crude extracts of the flowers of different colors also have promising activity.
Nematicidal activity against Heterodera zeae infective stage larvae assessed as nematode mortality at 0.5% under light conditions measured 24 hr post dose by stereoscopic microscopy
|
Heterodera zeae
|
50.0
%
|
|
Journal : J Agric Food Chem
Title : Isolation of nematicidal compounds from Tagetes patula L. yellow flowers: structure-activity relationship studies against cyst nematode Heterodera zeae infective stage larvae.
Year : 2011
Volume : 59
Issue : 17
First Page : 9080
Last Page : 9093
Authors : Faizi S, Fayyaz S, Bano S, Iqbal EY, Lubna, Siddiqi H, Naz A.
Abstract : Bioassay-guided isolation studies on the extracts of yellow flowers of Tagetes patula L. against the Heterodera zeae were carried out to identify phytochemicals lethal to this economically important cyst nematode. In vitro investigation of a polar extract and fractions showing activity led to the isolation of phenolic compounds (flavonoids and phenolic acids). In the nonpolar extract, a few fatty acids, their methyl esters, and thiophenes (including α-terthienyl) were detected. In studies of compounds obtained commercially, α-terthienyl and gallic and linoleic acids showed 100% mortality at concentrations of 0.125% after 24 h. Assessment of structure-activity relationships revealed that an increase in the number of hydroxyl groups in phenolic acids increased the activity; with fatty acids, activity depended on chain length and the number and position of double bonds. Crude extracts of the flowers of different colors also have promising activity.
Nematicidal activity against Heterodera zeae infective stage larvae assessed as nematode mortality at 1% under light conditions measured 24 hr post dose by stereoscopic microscopy
|
Heterodera zeae
|
50.0
%
|
|
Journal : J Agric Food Chem
Title : Isolation of nematicidal compounds from Tagetes patula L. yellow flowers: structure-activity relationship studies against cyst nematode Heterodera zeae infective stage larvae.
Year : 2011
Volume : 59
Issue : 17
First Page : 9080
Last Page : 9093
Authors : Faizi S, Fayyaz S, Bano S, Iqbal EY, Lubna, Siddiqi H, Naz A.
Abstract : Bioassay-guided isolation studies on the extracts of yellow flowers of Tagetes patula L. against the Heterodera zeae were carried out to identify phytochemicals lethal to this economically important cyst nematode. In vitro investigation of a polar extract and fractions showing activity led to the isolation of phenolic compounds (flavonoids and phenolic acids). In the nonpolar extract, a few fatty acids, their methyl esters, and thiophenes (including α-terthienyl) were detected. In studies of compounds obtained commercially, α-terthienyl and gallic and linoleic acids showed 100% mortality at concentrations of 0.125% after 24 h. Assessment of structure-activity relationships revealed that an increase in the number of hydroxyl groups in phenolic acids increased the activity; with fatty acids, activity depended on chain length and the number and position of double bonds. Crude extracts of the flowers of different colors also have promising activity.
Stimulation of fruit-infesting behavior of Cydia pomonella (codling moth) neonates infested in apple fruit plugs assessed as feeding deterrence index at 30 mg/mL
|
Cydia pomonella
|
None
|
|
Journal : J Agric Food Chem
Title : Effects of Ginkgo biloba constituents on fruit-infesting behavior of codling moth (Cydia pomonella) in apples.
Year : 2011
Volume : 59
Issue : 20
First Page : 10879
Last Page : 10886
Authors : Pszczolkowski MA, Durden K, Sellars S, Cowell B, Brown JJ.
Abstract : Codling moth, Cydia pomonella (L.), is a cosmopolitan pest of apple, potentially causing severe damage to the fruit. Currently used methods of combating this insect do not warrant full success or are harmful to the environment. The use of plant-derived semiochemicals for manipulation with fruit-infesting behavior is one of the new avenues for controlling this pest. Here, we explore the potential of Ginkgo biloba and its synthetic metabolites for preventing apple feeding and infestation by neonate larvae of C. pomonella. Experiments with crude extracts indicated that deterrent constituents of ginkgo are present among alkylphenols, terpene trilactones, and flavonol glycosides. Further experiments with ginkgo synthetic metabolites of medical importance, ginkgolic acids, kaempferol, quercetin, isorhamnetin, ginkgolides, and bilobalide, indicated that three out of these chemicals have feeding deterrent properties. Ginkgolic acid 15:0 prevented fruit infestation at concentrations as low as 1 mg/mL, bilobalide had deterrent effects at 0.1 mg/mL and higher concentrations, and ginkgolide B at 10 mg/mL. On the other hand, kaempferol and quercetin promoted fruit infestation by codling moth neonates. Ginkgolic acids 13:0, 15:1, and 17:1, isorhamnetin, and ginkgolides A and C had no effects on fruit infestation-related behavior. Our research is the first report showing that ginkgo constituents influence fruit infestation behavior and have potential applications in fruit protection.
Inhibition of fruit-infesting behavior of Cydia pomonella (codling moth) neonates infested in apple fruit plugs assessed as feeding deterrence index at 30 mg/mL
|
Cydia pomonella
|
None
|
|
Journal : J Agric Food Chem
Title : Effects of Ginkgo biloba constituents on fruit-infesting behavior of codling moth (Cydia pomonella) in apples.
Year : 2011
Volume : 59
Issue : 20
First Page : 10879
Last Page : 10886
Authors : Pszczolkowski MA, Durden K, Sellars S, Cowell B, Brown JJ.
Abstract : Codling moth, Cydia pomonella (L.), is a cosmopolitan pest of apple, potentially causing severe damage to the fruit. Currently used methods of combating this insect do not warrant full success or are harmful to the environment. The use of plant-derived semiochemicals for manipulation with fruit-infesting behavior is one of the new avenues for controlling this pest. Here, we explore the potential of Ginkgo biloba and its synthetic metabolites for preventing apple feeding and infestation by neonate larvae of C. pomonella. Experiments with crude extracts indicated that deterrent constituents of ginkgo are present among alkylphenols, terpene trilactones, and flavonol glycosides. Further experiments with ginkgo synthetic metabolites of medical importance, ginkgolic acids, kaempferol, quercetin, isorhamnetin, ginkgolides, and bilobalide, indicated that three out of these chemicals have feeding deterrent properties. Ginkgolic acid 15:0 prevented fruit infestation at concentrations as low as 1 mg/mL, bilobalide had deterrent effects at 0.1 mg/mL and higher concentrations, and ginkgolide B at 10 mg/mL. On the other hand, kaempferol and quercetin promoted fruit infestation by codling moth neonates. Ginkgolic acids 13:0, 15:1, and 17:1, isorhamnetin, and ginkgolides A and C had no effects on fruit infestation-related behavior. Our research is the first report showing that ginkgo constituents influence fruit infestation behavior and have potential applications in fruit protection.
Inhibition of fruit-infesting behavior of Cydia pomonella (codling moth) neonates infested in apple fruit plugs assessed as feeding deterrence index at 0.1 mg/mL
|
Cydia pomonella
|
None
|
|
Journal : J Agric Food Chem
Title : Effects of Ginkgo biloba constituents on fruit-infesting behavior of codling moth (Cydia pomonella) in apples.
Year : 2011
Volume : 59
Issue : 20
First Page : 10879
Last Page : 10886
Authors : Pszczolkowski MA, Durden K, Sellars S, Cowell B, Brown JJ.
Abstract : Codling moth, Cydia pomonella (L.), is a cosmopolitan pest of apple, potentially causing severe damage to the fruit. Currently used methods of combating this insect do not warrant full success or are harmful to the environment. The use of plant-derived semiochemicals for manipulation with fruit-infesting behavior is one of the new avenues for controlling this pest. Here, we explore the potential of Ginkgo biloba and its synthetic metabolites for preventing apple feeding and infestation by neonate larvae of C. pomonella. Experiments with crude extracts indicated that deterrent constituents of ginkgo are present among alkylphenols, terpene trilactones, and flavonol glycosides. Further experiments with ginkgo synthetic metabolites of medical importance, ginkgolic acids, kaempferol, quercetin, isorhamnetin, ginkgolides, and bilobalide, indicated that three out of these chemicals have feeding deterrent properties. Ginkgolic acid 15:0 prevented fruit infestation at concentrations as low as 1 mg/mL, bilobalide had deterrent effects at 0.1 mg/mL and higher concentrations, and ginkgolide B at 10 mg/mL. On the other hand, kaempferol and quercetin promoted fruit infestation by codling moth neonates. Ginkgolic acids 13:0, 15:1, and 17:1, isorhamnetin, and ginkgolides A and C had no effects on fruit infestation-related behavior. Our research is the first report showing that ginkgo constituents influence fruit infestation behavior and have potential applications in fruit protection.
Inhibition of fruit-infesting behavior of Cydia pomonella (codling moth) neonates infested in apple fruit plugs assessed as feeding deterrence index at 1 mg/mL
|
Cydia pomonella
|
None
|
|
Journal : J Agric Food Chem
Title : Effects of Ginkgo biloba constituents on fruit-infesting behavior of codling moth (Cydia pomonella) in apples.
Year : 2011
Volume : 59
Issue : 20
First Page : 10879
Last Page : 10886
Authors : Pszczolkowski MA, Durden K, Sellars S, Cowell B, Brown JJ.
Abstract : Codling moth, Cydia pomonella (L.), is a cosmopolitan pest of apple, potentially causing severe damage to the fruit. Currently used methods of combating this insect do not warrant full success or are harmful to the environment. The use of plant-derived semiochemicals for manipulation with fruit-infesting behavior is one of the new avenues for controlling this pest. Here, we explore the potential of Ginkgo biloba and its synthetic metabolites for preventing apple feeding and infestation by neonate larvae of C. pomonella. Experiments with crude extracts indicated that deterrent constituents of ginkgo are present among alkylphenols, terpene trilactones, and flavonol glycosides. Further experiments with ginkgo synthetic metabolites of medical importance, ginkgolic acids, kaempferol, quercetin, isorhamnetin, ginkgolides, and bilobalide, indicated that three out of these chemicals have feeding deterrent properties. Ginkgolic acid 15:0 prevented fruit infestation at concentrations as low as 1 mg/mL, bilobalide had deterrent effects at 0.1 mg/mL and higher concentrations, and ginkgolide B at 10 mg/mL. On the other hand, kaempferol and quercetin promoted fruit infestation by codling moth neonates. Ginkgolic acids 13:0, 15:1, and 17:1, isorhamnetin, and ginkgolides A and C had no effects on fruit infestation-related behavior. Our research is the first report showing that ginkgo constituents influence fruit infestation behavior and have potential applications in fruit protection.
Inhibition of fruit-infesting behavior of Cydia pomonella (codling moth) neonates infested in apple fruit plugs assessed as feeding deterrence index at 10 mg/mL
|
Cydia pomonella
|
None
|
|
Journal : J Agric Food Chem
Title : Effects of Ginkgo biloba constituents on fruit-infesting behavior of codling moth (Cydia pomonella) in apples.
Year : 2011
Volume : 59
Issue : 20
First Page : 10879
Last Page : 10886
Authors : Pszczolkowski MA, Durden K, Sellars S, Cowell B, Brown JJ.
Abstract : Codling moth, Cydia pomonella (L.), is a cosmopolitan pest of apple, potentially causing severe damage to the fruit. Currently used methods of combating this insect do not warrant full success or are harmful to the environment. The use of plant-derived semiochemicals for manipulation with fruit-infesting behavior is one of the new avenues for controlling this pest. Here, we explore the potential of Ginkgo biloba and its synthetic metabolites for preventing apple feeding and infestation by neonate larvae of C. pomonella. Experiments with crude extracts indicated that deterrent constituents of ginkgo are present among alkylphenols, terpene trilactones, and flavonol glycosides. Further experiments with ginkgo synthetic metabolites of medical importance, ginkgolic acids, kaempferol, quercetin, isorhamnetin, ginkgolides, and bilobalide, indicated that three out of these chemicals have feeding deterrent properties. Ginkgolic acid 15:0 prevented fruit infestation at concentrations as low as 1 mg/mL, bilobalide had deterrent effects at 0.1 mg/mL and higher concentrations, and ginkgolide B at 10 mg/mL. On the other hand, kaempferol and quercetin promoted fruit infestation by codling moth neonates. Ginkgolic acids 13:0, 15:1, and 17:1, isorhamnetin, and ginkgolides A and C had no effects on fruit infestation-related behavior. Our research is the first report showing that ginkgo constituents influence fruit infestation behavior and have potential applications in fruit protection.
Phytotoxic activity against Trifolium repens assessed as inhibition of hypocotyl growth at 22 +/-2 degC after 72 hr
|
Trifolium repens
|
396500000.0
nM
|
|
Journal : J Agric Food Chem
Title : Level of catechin, myricetin, quercetin and isoquercitrin in buckwheat (Fagopyrum esculentum Moench), changes of their levels during vegetation and their effect on the growth of selected weeds.
Year : 2009
Volume : 57
Issue : 7
First Page : 2719
Last Page : 2725
Authors : Kalinova J, Vrchotova N.
Abstract : Buckwheat is well-known as a crop rich in flavonoids, however, attention has usually only been paid to the main flavonoid rutin as an important natural antioxidant or as a possible allelopathic compound. Therefore, some of the other constituents found within individual plant parts of buckwheat (isoquercitrin, quercetin, catechin, and myricetin), as well as changes of their level during the growing season, were determined by HPLC analysis. The effects of these compounds on plant growth were proved on seven plant species. In buckwheat, isoquercitrin represented the largest component of the selected compounds. The strongest inhibitive effects on the growth of those selected plants were produced by catechin. Quercetin and isoquercitrin had weak inhibitive effects. Myricetin did not show any influence on plant growth. Hence we suppose that myricetin, isoquercetin and quercetin do not have important function in allelopathy of buckwheat. Buckwheat as row material for functional foods could be a significant source of another antioxidant, isoquercitrin.
Phytotoxic activity against Sinapis alba assessed as inhibition of hypocotyl growth at 22 +/-2 degC after 72 hr
|
Sinapis alba
|
12813000.0
nM
|
|
Journal : J Agric Food Chem
Title : Level of catechin, myricetin, quercetin and isoquercitrin in buckwheat (Fagopyrum esculentum Moench), changes of their levels during vegetation and their effect on the growth of selected weeds.
Year : 2009
Volume : 57
Issue : 7
First Page : 2719
Last Page : 2725
Authors : Kalinova J, Vrchotova N.
Abstract : Buckwheat is well-known as a crop rich in flavonoids, however, attention has usually only been paid to the main flavonoid rutin as an important natural antioxidant or as a possible allelopathic compound. Therefore, some of the other constituents found within individual plant parts of buckwheat (isoquercitrin, quercetin, catechin, and myricetin), as well as changes of their level during the growing season, were determined by HPLC analysis. The effects of these compounds on plant growth were proved on seven plant species. In buckwheat, isoquercitrin represented the largest component of the selected compounds. The strongest inhibitive effects on the growth of those selected plants were produced by catechin. Quercetin and isoquercitrin had weak inhibitive effects. Myricetin did not show any influence on plant growth. Hence we suppose that myricetin, isoquercetin and quercetin do not have important function in allelopathy of buckwheat. Buckwheat as row material for functional foods could be a significant source of another antioxidant, isoquercitrin.
Phytotoxic activity against Lolium perenne (perennial ryegrass) assessed as inhibition of hypocotyl growth at 22 +/-2 degC after 72 hr
|
Lolium perenne
|
183000.0
nM
|
|
Journal : J Agric Food Chem
Title : Level of catechin, myricetin, quercetin and isoquercitrin in buckwheat (Fagopyrum esculentum Moench), changes of their levels during vegetation and their effect on the growth of selected weeds.
Year : 2009
Volume : 57
Issue : 7
First Page : 2719
Last Page : 2725
Authors : Kalinova J, Vrchotova N.
Abstract : Buckwheat is well-known as a crop rich in flavonoids, however, attention has usually only been paid to the main flavonoid rutin as an important natural antioxidant or as a possible allelopathic compound. Therefore, some of the other constituents found within individual plant parts of buckwheat (isoquercitrin, quercetin, catechin, and myricetin), as well as changes of their level during the growing season, were determined by HPLC analysis. The effects of these compounds on plant growth were proved on seven plant species. In buckwheat, isoquercitrin represented the largest component of the selected compounds. The strongest inhibitive effects on the growth of those selected plants were produced by catechin. Quercetin and isoquercitrin had weak inhibitive effects. Myricetin did not show any influence on plant growth. Hence we suppose that myricetin, isoquercetin and quercetin do not have important function in allelopathy of buckwheat. Buckwheat as row material for functional foods could be a significant source of another antioxidant, isoquercitrin.
Phytotoxic activity against Echinochloa crus-galli (barnyard grass) assessed as inhibition of hypocotyl growth at 22 +/-2 degC after 72 hr
|
Echinochloa crus-galli
|
156000000.0
nM
|
|
Journal : J Agric Food Chem
Title : Level of catechin, myricetin, quercetin and isoquercitrin in buckwheat (Fagopyrum esculentum Moench), changes of their levels during vegetation and their effect on the growth of selected weeds.
Year : 2009
Volume : 57
Issue : 7
First Page : 2719
Last Page : 2725
Authors : Kalinova J, Vrchotova N.
Abstract : Buckwheat is well-known as a crop rich in flavonoids, however, attention has usually only been paid to the main flavonoid rutin as an important natural antioxidant or as a possible allelopathic compound. Therefore, some of the other constituents found within individual plant parts of buckwheat (isoquercitrin, quercetin, catechin, and myricetin), as well as changes of their level during the growing season, were determined by HPLC analysis. The effects of these compounds on plant growth were proved on seven plant species. In buckwheat, isoquercitrin represented the largest component of the selected compounds. The strongest inhibitive effects on the growth of those selected plants were produced by catechin. Quercetin and isoquercitrin had weak inhibitive effects. Myricetin did not show any influence on plant growth. Hence we suppose that myricetin, isoquercetin and quercetin do not have important function in allelopathy of buckwheat. Buckwheat as row material for functional foods could be a significant source of another antioxidant, isoquercitrin.
Phytotoxic activity against Trifolium repens assessed as inhibition of root growth at 22 +/-2 degC after 72 hr
|
Trifolium repens
|
364000000.0
nM
|
|
Journal : J Agric Food Chem
Title : Level of catechin, myricetin, quercetin and isoquercitrin in buckwheat (Fagopyrum esculentum Moench), changes of their levels during vegetation and their effect on the growth of selected weeds.
Year : 2009
Volume : 57
Issue : 7
First Page : 2719
Last Page : 2725
Authors : Kalinova J, Vrchotova N.
Abstract : Buckwheat is well-known as a crop rich in flavonoids, however, attention has usually only been paid to the main flavonoid rutin as an important natural antioxidant or as a possible allelopathic compound. Therefore, some of the other constituents found within individual plant parts of buckwheat (isoquercitrin, quercetin, catechin, and myricetin), as well as changes of their level during the growing season, were determined by HPLC analysis. The effects of these compounds on plant growth were proved on seven plant species. In buckwheat, isoquercitrin represented the largest component of the selected compounds. The strongest inhibitive effects on the growth of those selected plants were produced by catechin. Quercetin and isoquercitrin had weak inhibitive effects. Myricetin did not show any influence on plant growth. Hence we suppose that myricetin, isoquercetin and quercetin do not have important function in allelopathy of buckwheat. Buckwheat as row material for functional foods could be a significant source of another antioxidant, isoquercitrin.
Phytotoxic activity against Sinapis alba assessed as inhibition of root growth at 22 +/-2 degC after 72 hr
|
Sinapis alba
|
7050000.0
nM
|
|
Journal : J Agric Food Chem
Title : Level of catechin, myricetin, quercetin and isoquercitrin in buckwheat (Fagopyrum esculentum Moench), changes of their levels during vegetation and their effect on the growth of selected weeds.
Year : 2009
Volume : 57
Issue : 7
First Page : 2719
Last Page : 2725
Authors : Kalinova J, Vrchotova N.
Abstract : Buckwheat is well-known as a crop rich in flavonoids, however, attention has usually only been paid to the main flavonoid rutin as an important natural antioxidant or as a possible allelopathic compound. Therefore, some of the other constituents found within individual plant parts of buckwheat (isoquercitrin, quercetin, catechin, and myricetin), as well as changes of their level during the growing season, were determined by HPLC analysis. The effects of these compounds on plant growth were proved on seven plant species. In buckwheat, isoquercitrin represented the largest component of the selected compounds. The strongest inhibitive effects on the growth of those selected plants were produced by catechin. Quercetin and isoquercitrin had weak inhibitive effects. Myricetin did not show any influence on plant growth. Hence we suppose that myricetin, isoquercetin and quercetin do not have important function in allelopathy of buckwheat. Buckwheat as row material for functional foods could be a significant source of another antioxidant, isoquercitrin.
Phytotoxic activity against Lolium perenne (perennial ryegrass) assessed as inhibition of root growth at 22 +/-2 degC after 72 hr
|
Lolium perenne
|
273000.0
nM
|
|
Journal : J Agric Food Chem
Title : Level of catechin, myricetin, quercetin and isoquercitrin in buckwheat (Fagopyrum esculentum Moench), changes of their levels during vegetation and their effect on the growth of selected weeds.
Year : 2009
Volume : 57
Issue : 7
First Page : 2719
Last Page : 2725
Authors : Kalinova J, Vrchotova N.
Abstract : Buckwheat is well-known as a crop rich in flavonoids, however, attention has usually only been paid to the main flavonoid rutin as an important natural antioxidant or as a possible allelopathic compound. Therefore, some of the other constituents found within individual plant parts of buckwheat (isoquercitrin, quercetin, catechin, and myricetin), as well as changes of their level during the growing season, were determined by HPLC analysis. The effects of these compounds on plant growth were proved on seven plant species. In buckwheat, isoquercitrin represented the largest component of the selected compounds. The strongest inhibitive effects on the growth of those selected plants were produced by catechin. Quercetin and isoquercitrin had weak inhibitive effects. Myricetin did not show any influence on plant growth. Hence we suppose that myricetin, isoquercetin and quercetin do not have important function in allelopathy of buckwheat. Buckwheat as row material for functional foods could be a significant source of another antioxidant, isoquercitrin.
Phytotoxic activity against Echinochloa crus-galli (barnyard grass) assessed as inhibition of root growth at 22 +/-2 degC after 72 hr
|
Echinochloa crus-galli
|
171500000.0
nM
|
|
Journal : J Agric Food Chem
Title : Level of catechin, myricetin, quercetin and isoquercitrin in buckwheat (Fagopyrum esculentum Moench), changes of their levels during vegetation and their effect on the growth of selected weeds.
Year : 2009
Volume : 57
Issue : 7
First Page : 2719
Last Page : 2725
Authors : Kalinova J, Vrchotova N.
Abstract : Buckwheat is well-known as a crop rich in flavonoids, however, attention has usually only been paid to the main flavonoid rutin as an important natural antioxidant or as a possible allelopathic compound. Therefore, some of the other constituents found within individual plant parts of buckwheat (isoquercitrin, quercetin, catechin, and myricetin), as well as changes of their level during the growing season, were determined by HPLC analysis. The effects of these compounds on plant growth were proved on seven plant species. In buckwheat, isoquercitrin represented the largest component of the selected compounds. The strongest inhibitive effects on the growth of those selected plants were produced by catechin. Quercetin and isoquercitrin had weak inhibitive effects. Myricetin did not show any influence on plant growth. Hence we suppose that myricetin, isoquercetin and quercetin do not have important function in allelopathy of buckwheat. Buckwheat as row material for functional foods could be a significant source of another antioxidant, isoquercitrin.
Antioxidant activity assessed as DPPH scavenging activity after 30 min by spectrophotometry
|
None
|
21460.0
nM
|
|
Journal : Med Chem Res
Title : Synthesis and evaluation of DPPH and anti-inflammatory activities of 2,6-bisbenzylidenecyclohexanone and pyrazoline derivatives
Year : 2012
Volume : 21
Issue : 3
First Page : 333
Last Page : 344
Authors : Lam KW, Tham CL, Liew CY, Syahida A, Abdul Rahman MB, Israf DA, Lajis NH
Anti-inflammatory activity in Mus musculus (mouse) RAW264.7 cells assessed as inhibition of IFN-gamma/LPS-induced nitric oxide production after 17 to 20 hr by Griess assay
|
Mus musculus
|
None
|
|
Journal : Med Chem Res
Title : Synthesis and evaluation of DPPH and anti-inflammatory activities of 2,6-bisbenzylidenecyclohexanone and pyrazoline derivatives
Year : 2012
Volume : 21
Issue : 3
First Page : 333
Last Page : 344
Authors : Lam KW, Tham CL, Liew CY, Syahida A, Abdul Rahman MB, Israf DA, Lajis NH
Inhibition of baker's yeast alpha-glucosidase using p-nitrophenyl-alpha-D-glucopyranoside as substrate by spectrophotometry
|
Saccharomyces cerevisiae
|
0.845
|
|
Journal : Med Chem Res
Title : Two-dimensional quantitative structureactivity relationship study on polyphenols as inhibitors of -glucosidase
Year : 2012
Volume : 21
Issue : 12
First Page : 3984
Last Page : 3993
Authors : Rastija V, Beslo D, Nikolic S
Inhibition of Homo sapiens (human) cyclin-dependent kinase 6
|
Homo sapiens
|
25000.0
nM
|
|
Journal : Med Chem Res
Title : Molecular docking study on anticancer activity of plant-derived natural products
Year : 2010
Volume : 19
Issue : 8
First Page : 817
Last Page : 835
Authors : Phosrithong N, Ungwitayatorn J
Antioxidant activity in plasma assessed as ABTS radical scavenging activity relative to trolox
|
None
|
6.0
|
|
Journal : Med Chem Res
Title : Protection of protein carbonyl formation by quercetin in erythrocytes subjected to oxidative stress
Year : 2010
Volume : 19
Issue : 2
First Page : 186
Last Page : 192
Authors : Pandey KB, Rizvi SI
Plasma concentration in Homo sapiens (human)
|
Homo sapiens
|
4.0
umol
|
|
Journal : Med Chem Res
Title : Protection of protein carbonyl formation by quercetin in erythrocytes subjected to oxidative stress
Year : 2010
Volume : 19
Issue : 2
First Page : 186
Last Page : 192
Authors : Pandey KB, Rizvi SI
Antioxidant activity in Homo sapiens (human) erythrocytes assessed as protection against t-BHP-induced oxidative stress at 0.1 to 100 uM
|
Homo sapiens
|
None
|
|
Journal : Med Chem Res
Title : Protection of protein carbonyl formation by quercetin in erythrocytes subjected to oxidative stress
Year : 2010
Volume : 19
Issue : 2
First Page : 186
Last Page : 192
Authors : Pandey KB, Rizvi SI
Antioxidant activity in Homo sapiens (human) erythrocytes assessed as protection against t-BHP-induced oxidative stress measured up to 180 min
|
Homo sapiens
|
None
|
|
Journal : Med Chem Res
Title : Protection of protein carbonyl formation by quercetin in erythrocytes subjected to oxidative stress
Year : 2010
Volume : 19
Issue : 2
First Page : 186
Last Page : 192
Authors : Pandey KB, Rizvi SI
Antioxidant activity assessed as ferric ion reducing activity measured as trolox equivalents by FRAP assay
|
None
|
None
|
|
Journal : Med Chem Res
Title : In vitro antioxidant properties and in vivo lowering blood lipid of Forsythia suspense leaves
Year : 2010
Volume : 19
Issue : 7
First Page : 617
Last Page : 628
Authors : Kang W, Wang J
Phytotoxicity in Solanum lycopersicum (tomato) assessed as inhibition of seed germination at 250 ug/mL measured on day 14 relative to untreated control
|
Solanum lycopersicum
|
None
|
|
Journal : J Agric Food Chem
Title : Structure-dependent phytotoxicity of catechins and other flavonoids: flavonoid conversions by cell-free protein extracts of Centaurea maculosa (spotted knapweed) roots.
Year : 2003
Volume : 51
Issue : 4
First Page : 897
Last Page : 901
Authors : Bais HP, Walker TS, Kennan AJ, Stermitz FR, Vivanco JM.
Abstract : Invasive plants are believed to succeed in part by secretion of allelochemicals, thus displacing competing plant species. Centaurea maculosa (spotted knapweed) provides a classic example of this process. We have previously reported that spotted knapweed roots secrete (+/-)-catechin and that (-)-catechin, but not (+)-catechin, is phytotoxic and hence may be a major contributor to C. maculosa's invasive behavior in the rhizosphere. In this communication, we explore both structure/activity relationships for flavonoid phytotoxicity and possible biosynthetic pathways for root production of (+/-)-catechin. Kaempferol and dihydroquercetin were shown to be phytotoxic, while quercetin was not. Kaempferol was converted to dihydroquercetin and (+/-)-catechin when treated with total root protein extracts from C. maculosa, but quercetin was not. This finding suggests an alteration in the standard flavonoid biosynthetic pathway in C. maculosa roots, whereby kaempferol is not a dead-end product but serves as a precursor to dihydroquercetin, which in turn leads to (+/-)-catechin production.
Phytotoxicity in Solanum lycopersicum (tomato) assessed as inhibition of root differentiation at 250 ug/mL measured on day 14 relative to untreated control
|
Solanum lycopersicum
|
None
|
|
Journal : J Agric Food Chem
Title : Structure-dependent phytotoxicity of catechins and other flavonoids: flavonoid conversions by cell-free protein extracts of Centaurea maculosa (spotted knapweed) roots.
Year : 2003
Volume : 51
Issue : 4
First Page : 897
Last Page : 901
Authors : Bais HP, Walker TS, Kennan AJ, Stermitz FR, Vivanco JM.
Abstract : Invasive plants are believed to succeed in part by secretion of allelochemicals, thus displacing competing plant species. Centaurea maculosa (spotted knapweed) provides a classic example of this process. We have previously reported that spotted knapweed roots secrete (+/-)-catechin and that (-)-catechin, but not (+)-catechin, is phytotoxic and hence may be a major contributor to C. maculosa's invasive behavior in the rhizosphere. In this communication, we explore both structure/activity relationships for flavonoid phytotoxicity and possible biosynthetic pathways for root production of (+/-)-catechin. Kaempferol and dihydroquercetin were shown to be phytotoxic, while quercetin was not. Kaempferol was converted to dihydroquercetin and (+/-)-catechin when treated with total root protein extracts from C. maculosa, but quercetin was not. This finding suggests an alteration in the standard flavonoid biosynthetic pathway in C. maculosa roots, whereby kaempferol is not a dead-end product but serves as a precursor to dihydroquercetin, which in turn leads to (+/-)-catechin production.
Phytotoxicity in Solanum lycopersicum (tomato) assessed as inhibition of shoot differentiation at 250 ug/mL measured on day 14 relative to untreated control
|
Solanum lycopersicum
|
None
|
|
Journal : J Agric Food Chem
Title : Structure-dependent phytotoxicity of catechins and other flavonoids: flavonoid conversions by cell-free protein extracts of Centaurea maculosa (spotted knapweed) roots.
Year : 2003
Volume : 51
Issue : 4
First Page : 897
Last Page : 901
Authors : Bais HP, Walker TS, Kennan AJ, Stermitz FR, Vivanco JM.
Abstract : Invasive plants are believed to succeed in part by secretion of allelochemicals, thus displacing competing plant species. Centaurea maculosa (spotted knapweed) provides a classic example of this process. We have previously reported that spotted knapweed roots secrete (+/-)-catechin and that (-)-catechin, but not (+)-catechin, is phytotoxic and hence may be a major contributor to C. maculosa's invasive behavior in the rhizosphere. In this communication, we explore both structure/activity relationships for flavonoid phytotoxicity and possible biosynthetic pathways for root production of (+/-)-catechin. Kaempferol and dihydroquercetin were shown to be phytotoxic, while quercetin was not. Kaempferol was converted to dihydroquercetin and (+/-)-catechin when treated with total root protein extracts from C. maculosa, but quercetin was not. This finding suggests an alteration in the standard flavonoid biosynthetic pathway in C. maculosa roots, whereby kaempferol is not a dead-end product but serves as a precursor to dihydroquercetin, which in turn leads to (+/-)-catechin production.
Phytotoxicity in Triticum aestivum (wheat) assessed as inhibition of seed germination at 250 ug/mL measured on day 14 relative to untreated control
|
Triticum aestivum
|
None
|
|
Journal : J Agric Food Chem
Title : Structure-dependent phytotoxicity of catechins and other flavonoids: flavonoid conversions by cell-free protein extracts of Centaurea maculosa (spotted knapweed) roots.
Year : 2003
Volume : 51
Issue : 4
First Page : 897
Last Page : 901
Authors : Bais HP, Walker TS, Kennan AJ, Stermitz FR, Vivanco JM.
Abstract : Invasive plants are believed to succeed in part by secretion of allelochemicals, thus displacing competing plant species. Centaurea maculosa (spotted knapweed) provides a classic example of this process. We have previously reported that spotted knapweed roots secrete (+/-)-catechin and that (-)-catechin, but not (+)-catechin, is phytotoxic and hence may be a major contributor to C. maculosa's invasive behavior in the rhizosphere. In this communication, we explore both structure/activity relationships for flavonoid phytotoxicity and possible biosynthetic pathways for root production of (+/-)-catechin. Kaempferol and dihydroquercetin were shown to be phytotoxic, while quercetin was not. Kaempferol was converted to dihydroquercetin and (+/-)-catechin when treated with total root protein extracts from C. maculosa, but quercetin was not. This finding suggests an alteration in the standard flavonoid biosynthetic pathway in C. maculosa roots, whereby kaempferol is not a dead-end product but serves as a precursor to dihydroquercetin, which in turn leads to (+/-)-catechin production.
Phytotoxicity in Triticum aestivum (wheat) assessed as inhibition of root differentiation at 250 ug/mL measured on day 14 relative to untreated control
|
Triticum aestivum
|
None
|
|
Journal : J Agric Food Chem
Title : Structure-dependent phytotoxicity of catechins and other flavonoids: flavonoid conversions by cell-free protein extracts of Centaurea maculosa (spotted knapweed) roots.
Year : 2003
Volume : 51
Issue : 4
First Page : 897
Last Page : 901
Authors : Bais HP, Walker TS, Kennan AJ, Stermitz FR, Vivanco JM.
Abstract : Invasive plants are believed to succeed in part by secretion of allelochemicals, thus displacing competing plant species. Centaurea maculosa (spotted knapweed) provides a classic example of this process. We have previously reported that spotted knapweed roots secrete (+/-)-catechin and that (-)-catechin, but not (+)-catechin, is phytotoxic and hence may be a major contributor to C. maculosa's invasive behavior in the rhizosphere. In this communication, we explore both structure/activity relationships for flavonoid phytotoxicity and possible biosynthetic pathways for root production of (+/-)-catechin. Kaempferol and dihydroquercetin were shown to be phytotoxic, while quercetin was not. Kaempferol was converted to dihydroquercetin and (+/-)-catechin when treated with total root protein extracts from C. maculosa, but quercetin was not. This finding suggests an alteration in the standard flavonoid biosynthetic pathway in C. maculosa roots, whereby kaempferol is not a dead-end product but serves as a precursor to dihydroquercetin, which in turn leads to (+/-)-catechin production.
Phytotoxicity in Triticum aestivum (wheat) assessed as inhibition of shoot differentiation at 250 ug/mL measured on day 14 relative to untreated control
|
Triticum aestivum
|
None
|
|
Journal : J Agric Food Chem
Title : Structure-dependent phytotoxicity of catechins and other flavonoids: flavonoid conversions by cell-free protein extracts of Centaurea maculosa (spotted knapweed) roots.
Year : 2003
Volume : 51
Issue : 4
First Page : 897
Last Page : 901
Authors : Bais HP, Walker TS, Kennan AJ, Stermitz FR, Vivanco JM.
Abstract : Invasive plants are believed to succeed in part by secretion of allelochemicals, thus displacing competing plant species. Centaurea maculosa (spotted knapweed) provides a classic example of this process. We have previously reported that spotted knapweed roots secrete (+/-)-catechin and that (-)-catechin, but not (+)-catechin, is phytotoxic and hence may be a major contributor to C. maculosa's invasive behavior in the rhizosphere. In this communication, we explore both structure/activity relationships for flavonoid phytotoxicity and possible biosynthetic pathways for root production of (+/-)-catechin. Kaempferol and dihydroquercetin were shown to be phytotoxic, while quercetin was not. Kaempferol was converted to dihydroquercetin and (+/-)-catechin when treated with total root protein extracts from C. maculosa, but quercetin was not. This finding suggests an alteration in the standard flavonoid biosynthetic pathway in C. maculosa roots, whereby kaempferol is not a dead-end product but serves as a precursor to dihydroquercetin, which in turn leads to (+/-)-catechin production.
Phytotoxicity in Bassia scoparia assessed as inhibition of shoot differentiation at 250 ug/mL measured on day 14 relative to untreated control
|
Bassia scoparia
|
None
|
|
Journal : J Agric Food Chem
Title : Structure-dependent phytotoxicity of catechins and other flavonoids: flavonoid conversions by cell-free protein extracts of Centaurea maculosa (spotted knapweed) roots.
Year : 2003
Volume : 51
Issue : 4
First Page : 897
Last Page : 901
Authors : Bais HP, Walker TS, Kennan AJ, Stermitz FR, Vivanco JM.
Abstract : Invasive plants are believed to succeed in part by secretion of allelochemicals, thus displacing competing plant species. Centaurea maculosa (spotted knapweed) provides a classic example of this process. We have previously reported that spotted knapweed roots secrete (+/-)-catechin and that (-)-catechin, but not (+)-catechin, is phytotoxic and hence may be a major contributor to C. maculosa's invasive behavior in the rhizosphere. In this communication, we explore both structure/activity relationships for flavonoid phytotoxicity and possible biosynthetic pathways for root production of (+/-)-catechin. Kaempferol and dihydroquercetin were shown to be phytotoxic, while quercetin was not. Kaempferol was converted to dihydroquercetin and (+/-)-catechin when treated with total root protein extracts from C. maculosa, but quercetin was not. This finding suggests an alteration in the standard flavonoid biosynthetic pathway in C. maculosa roots, whereby kaempferol is not a dead-end product but serves as a precursor to dihydroquercetin, which in turn leads to (+/-)-catechin production.
Phytotoxicity in Linaria genistifolia subsp. dalmatica assessed as inhibition of seed germination at 250 ug/mL measured on day 14 relative to untreated control
|
Linaria genistifolia subsp. dalmatica
|
None
|
|
Journal : J Agric Food Chem
Title : Structure-dependent phytotoxicity of catechins and other flavonoids: flavonoid conversions by cell-free protein extracts of Centaurea maculosa (spotted knapweed) roots.
Year : 2003
Volume : 51
Issue : 4
First Page : 897
Last Page : 901
Authors : Bais HP, Walker TS, Kennan AJ, Stermitz FR, Vivanco JM.
Abstract : Invasive plants are believed to succeed in part by secretion of allelochemicals, thus displacing competing plant species. Centaurea maculosa (spotted knapweed) provides a classic example of this process. We have previously reported that spotted knapweed roots secrete (+/-)-catechin and that (-)-catechin, but not (+)-catechin, is phytotoxic and hence may be a major contributor to C. maculosa's invasive behavior in the rhizosphere. In this communication, we explore both structure/activity relationships for flavonoid phytotoxicity and possible biosynthetic pathways for root production of (+/-)-catechin. Kaempferol and dihydroquercetin were shown to be phytotoxic, while quercetin was not. Kaempferol was converted to dihydroquercetin and (+/-)-catechin when treated with total root protein extracts from C. maculosa, but quercetin was not. This finding suggests an alteration in the standard flavonoid biosynthetic pathway in C. maculosa roots, whereby kaempferol is not a dead-end product but serves as a precursor to dihydroquercetin, which in turn leads to (+/-)-catechin production.
Phytotoxicity in Linaria genistifolia subsp. dalmatica assessed as inhibition of shoot differentiation at 250 ug/mL measured on day 14 relative to untreated control
|
Linaria genistifolia subsp. dalmatica
|
None
|
|
Journal : J Agric Food Chem
Title : Structure-dependent phytotoxicity of catechins and other flavonoids: flavonoid conversions by cell-free protein extracts of Centaurea maculosa (spotted knapweed) roots.
Year : 2003
Volume : 51
Issue : 4
First Page : 897
Last Page : 901
Authors : Bais HP, Walker TS, Kennan AJ, Stermitz FR, Vivanco JM.
Abstract : Invasive plants are believed to succeed in part by secretion of allelochemicals, thus displacing competing plant species. Centaurea maculosa (spotted knapweed) provides a classic example of this process. We have previously reported that spotted knapweed roots secrete (+/-)-catechin and that (-)-catechin, but not (+)-catechin, is phytotoxic and hence may be a major contributor to C. maculosa's invasive behavior in the rhizosphere. In this communication, we explore both structure/activity relationships for flavonoid phytotoxicity and possible biosynthetic pathways for root production of (+/-)-catechin. Kaempferol and dihydroquercetin were shown to be phytotoxic, while quercetin was not. Kaempferol was converted to dihydroquercetin and (+/-)-catechin when treated with total root protein extracts from C. maculosa, but quercetin was not. This finding suggests an alteration in the standard flavonoid biosynthetic pathway in C. maculosa roots, whereby kaempferol is not a dead-end product but serves as a precursor to dihydroquercetin, which in turn leads to (+/-)-catechin production.
Phytotoxicity in Linaria genistifolia subsp. dalmatica assessed as inhibition of root differentiation at 250 ug/mL measured on day 14 relative to untreated control
|
Linaria genistifolia subsp. dalmatica
|
None
|
|
Journal : J Agric Food Chem
Title : Structure-dependent phytotoxicity of catechins and other flavonoids: flavonoid conversions by cell-free protein extracts of Centaurea maculosa (spotted knapweed) roots.
Year : 2003
Volume : 51
Issue : 4
First Page : 897
Last Page : 901
Authors : Bais HP, Walker TS, Kennan AJ, Stermitz FR, Vivanco JM.
Abstract : Invasive plants are believed to succeed in part by secretion of allelochemicals, thus displacing competing plant species. Centaurea maculosa (spotted knapweed) provides a classic example of this process. We have previously reported that spotted knapweed roots secrete (+/-)-catechin and that (-)-catechin, but not (+)-catechin, is phytotoxic and hence may be a major contributor to C. maculosa's invasive behavior in the rhizosphere. In this communication, we explore both structure/activity relationships for flavonoid phytotoxicity and possible biosynthetic pathways for root production of (+/-)-catechin. Kaempferol and dihydroquercetin were shown to be phytotoxic, while quercetin was not. Kaempferol was converted to dihydroquercetin and (+/-)-catechin when treated with total root protein extracts from C. maculosa, but quercetin was not. This finding suggests an alteration in the standard flavonoid biosynthetic pathway in C. maculosa roots, whereby kaempferol is not a dead-end product but serves as a precursor to dihydroquercetin, which in turn leads to (+/-)-catechin production.
Phytotoxicity in Arabidopsis thaliana assessed as inhibition of shoot differentiation at 250 ug/mL measured on day 14 relative to untreated control
|
Arabidopsis thaliana
|
None
|
|
Journal : J Agric Food Chem
Title : Structure-dependent phytotoxicity of catechins and other flavonoids: flavonoid conversions by cell-free protein extracts of Centaurea maculosa (spotted knapweed) roots.
Year : 2003
Volume : 51
Issue : 4
First Page : 897
Last Page : 901
Authors : Bais HP, Walker TS, Kennan AJ, Stermitz FR, Vivanco JM.
Abstract : Invasive plants are believed to succeed in part by secretion of allelochemicals, thus displacing competing plant species. Centaurea maculosa (spotted knapweed) provides a classic example of this process. We have previously reported that spotted knapweed roots secrete (+/-)-catechin and that (-)-catechin, but not (+)-catechin, is phytotoxic and hence may be a major contributor to C. maculosa's invasive behavior in the rhizosphere. In this communication, we explore both structure/activity relationships for flavonoid phytotoxicity and possible biosynthetic pathways for root production of (+/-)-catechin. Kaempferol and dihydroquercetin were shown to be phytotoxic, while quercetin was not. Kaempferol was converted to dihydroquercetin and (+/-)-catechin when treated with total root protein extracts from C. maculosa, but quercetin was not. This finding suggests an alteration in the standard flavonoid biosynthetic pathway in C. maculosa roots, whereby kaempferol is not a dead-end product but serves as a precursor to dihydroquercetin, which in turn leads to (+/-)-catechin production.
Phytotoxicity in Arabidopsis thaliana assessed as inhibition of root differentiation at 250 ug/mL measured on day 14 relative to untreated control
|
Arabidopsis thaliana
|
None
|
|
Journal : J Agric Food Chem
Title : Structure-dependent phytotoxicity of catechins and other flavonoids: flavonoid conversions by cell-free protein extracts of Centaurea maculosa (spotted knapweed) roots.
Year : 2003
Volume : 51
Issue : 4
First Page : 897
Last Page : 901
Authors : Bais HP, Walker TS, Kennan AJ, Stermitz FR, Vivanco JM.
Abstract : Invasive plants are believed to succeed in part by secretion of allelochemicals, thus displacing competing plant species. Centaurea maculosa (spotted knapweed) provides a classic example of this process. We have previously reported that spotted knapweed roots secrete (+/-)-catechin and that (-)-catechin, but not (+)-catechin, is phytotoxic and hence may be a major contributor to C. maculosa's invasive behavior in the rhizosphere. In this communication, we explore both structure/activity relationships for flavonoid phytotoxicity and possible biosynthetic pathways for root production of (+/-)-catechin. Kaempferol and dihydroquercetin were shown to be phytotoxic, while quercetin was not. Kaempferol was converted to dihydroquercetin and (+/-)-catechin when treated with total root protein extracts from C. maculosa, but quercetin was not. This finding suggests an alteration in the standard flavonoid biosynthetic pathway in C. maculosa roots, whereby kaempferol is not a dead-end product but serves as a precursor to dihydroquercetin, which in turn leads to (+/-)-catechin production.
Phytotoxicity in Centaurea diffusa assessed as inhibition of seed germination at 250 ug/mL measured on day 14 relative to untreated control
|
Centaurea diffusa
|
None
|
|
Journal : J Agric Food Chem
Title : Structure-dependent phytotoxicity of catechins and other flavonoids: flavonoid conversions by cell-free protein extracts of Centaurea maculosa (spotted knapweed) roots.
Year : 2003
Volume : 51
Issue : 4
First Page : 897
Last Page : 901
Authors : Bais HP, Walker TS, Kennan AJ, Stermitz FR, Vivanco JM.
Abstract : Invasive plants are believed to succeed in part by secretion of allelochemicals, thus displacing competing plant species. Centaurea maculosa (spotted knapweed) provides a classic example of this process. We have previously reported that spotted knapweed roots secrete (+/-)-catechin and that (-)-catechin, but not (+)-catechin, is phytotoxic and hence may be a major contributor to C. maculosa's invasive behavior in the rhizosphere. In this communication, we explore both structure/activity relationships for flavonoid phytotoxicity and possible biosynthetic pathways for root production of (+/-)-catechin. Kaempferol and dihydroquercetin were shown to be phytotoxic, while quercetin was not. Kaempferol was converted to dihydroquercetin and (+/-)-catechin when treated with total root protein extracts from C. maculosa, but quercetin was not. This finding suggests an alteration in the standard flavonoid biosynthetic pathway in C. maculosa roots, whereby kaempferol is not a dead-end product but serves as a precursor to dihydroquercetin, which in turn leads to (+/-)-catechin production.
Phytotoxicity in Arabidopsis thaliana assessed as inhibition of seed germination at 250 ug/mL measured on day 14 relative to untreated control
|
Arabidopsis thaliana
|
None
|
|
Journal : J Agric Food Chem
Title : Structure-dependent phytotoxicity of catechins and other flavonoids: flavonoid conversions by cell-free protein extracts of Centaurea maculosa (spotted knapweed) roots.
Year : 2003
Volume : 51
Issue : 4
First Page : 897
Last Page : 901
Authors : Bais HP, Walker TS, Kennan AJ, Stermitz FR, Vivanco JM.
Abstract : Invasive plants are believed to succeed in part by secretion of allelochemicals, thus displacing competing plant species. Centaurea maculosa (spotted knapweed) provides a classic example of this process. We have previously reported that spotted knapweed roots secrete (+/-)-catechin and that (-)-catechin, but not (+)-catechin, is phytotoxic and hence may be a major contributor to C. maculosa's invasive behavior in the rhizosphere. In this communication, we explore both structure/activity relationships for flavonoid phytotoxicity and possible biosynthetic pathways for root production of (+/-)-catechin. Kaempferol and dihydroquercetin were shown to be phytotoxic, while quercetin was not. Kaempferol was converted to dihydroquercetin and (+/-)-catechin when treated with total root protein extracts from C. maculosa, but quercetin was not. This finding suggests an alteration in the standard flavonoid biosynthetic pathway in C. maculosa roots, whereby kaempferol is not a dead-end product but serves as a precursor to dihydroquercetin, which in turn leads to (+/-)-catechin production.
Phytotoxicity in Centaurea diffusa assessed as inhibition of root differentiation at 250 ug/mL measured on day 14 relative to untreated control
|
Centaurea diffusa
|
None
|
|
Journal : J Agric Food Chem
Title : Structure-dependent phytotoxicity of catechins and other flavonoids: flavonoid conversions by cell-free protein extracts of Centaurea maculosa (spotted knapweed) roots.
Year : 2003
Volume : 51
Issue : 4
First Page : 897
Last Page : 901
Authors : Bais HP, Walker TS, Kennan AJ, Stermitz FR, Vivanco JM.
Abstract : Invasive plants are believed to succeed in part by secretion of allelochemicals, thus displacing competing plant species. Centaurea maculosa (spotted knapweed) provides a classic example of this process. We have previously reported that spotted knapweed roots secrete (+/-)-catechin and that (-)-catechin, but not (+)-catechin, is phytotoxic and hence may be a major contributor to C. maculosa's invasive behavior in the rhizosphere. In this communication, we explore both structure/activity relationships for flavonoid phytotoxicity and possible biosynthetic pathways for root production of (+/-)-catechin. Kaempferol and dihydroquercetin were shown to be phytotoxic, while quercetin was not. Kaempferol was converted to dihydroquercetin and (+/-)-catechin when treated with total root protein extracts from C. maculosa, but quercetin was not. This finding suggests an alteration in the standard flavonoid biosynthetic pathway in C. maculosa roots, whereby kaempferol is not a dead-end product but serves as a precursor to dihydroquercetin, which in turn leads to (+/-)-catechin production.
Phytotoxicity in Centaurea diffusa assessed as inhibition of shoot differentiation at 250 ug/mL measured on day 14 relative to untreated control
|
Centaurea diffusa
|
None
|
|
Journal : J Agric Food Chem
Title : Structure-dependent phytotoxicity of catechins and other flavonoids: flavonoid conversions by cell-free protein extracts of Centaurea maculosa (spotted knapweed) roots.
Year : 2003
Volume : 51
Issue : 4
First Page : 897
Last Page : 901
Authors : Bais HP, Walker TS, Kennan AJ, Stermitz FR, Vivanco JM.
Abstract : Invasive plants are believed to succeed in part by secretion of allelochemicals, thus displacing competing plant species. Centaurea maculosa (spotted knapweed) provides a classic example of this process. We have previously reported that spotted knapweed roots secrete (+/-)-catechin and that (-)-catechin, but not (+)-catechin, is phytotoxic and hence may be a major contributor to C. maculosa's invasive behavior in the rhizosphere. In this communication, we explore both structure/activity relationships for flavonoid phytotoxicity and possible biosynthetic pathways for root production of (+/-)-catechin. Kaempferol and dihydroquercetin were shown to be phytotoxic, while quercetin was not. Kaempferol was converted to dihydroquercetin and (+/-)-catechin when treated with total root protein extracts from C. maculosa, but quercetin was not. This finding suggests an alteration in the standard flavonoid biosynthetic pathway in C. maculosa roots, whereby kaempferol is not a dead-end product but serves as a precursor to dihydroquercetin, which in turn leads to (+/-)-catechin production.
Phytotoxicity in Bassia scoparia assessed as inhibition of root differentiation at 250 ug/mL measured on day 14 relative to untreated control
|
Bassia scoparia
|
None
|
|
Journal : J Agric Food Chem
Title : Structure-dependent phytotoxicity of catechins and other flavonoids: flavonoid conversions by cell-free protein extracts of Centaurea maculosa (spotted knapweed) roots.
Year : 2003
Volume : 51
Issue : 4
First Page : 897
Last Page : 901
Authors : Bais HP, Walker TS, Kennan AJ, Stermitz FR, Vivanco JM.
Abstract : Invasive plants are believed to succeed in part by secretion of allelochemicals, thus displacing competing plant species. Centaurea maculosa (spotted knapweed) provides a classic example of this process. We have previously reported that spotted knapweed roots secrete (+/-)-catechin and that (-)-catechin, but not (+)-catechin, is phytotoxic and hence may be a major contributor to C. maculosa's invasive behavior in the rhizosphere. In this communication, we explore both structure/activity relationships for flavonoid phytotoxicity and possible biosynthetic pathways for root production of (+/-)-catechin. Kaempferol and dihydroquercetin were shown to be phytotoxic, while quercetin was not. Kaempferol was converted to dihydroquercetin and (+/-)-catechin when treated with total root protein extracts from C. maculosa, but quercetin was not. This finding suggests an alteration in the standard flavonoid biosynthetic pathway in C. maculosa roots, whereby kaempferol is not a dead-end product but serves as a precursor to dihydroquercetin, which in turn leads to (+/-)-catechin production.
Phytotoxicity in Bassia scoparia assessed as inhibition of seed germination at 250 ug/mL measured on day 14 relative to untreated control
|
Bassia scoparia
|
None
|
|
Journal : J Agric Food Chem
Title : Structure-dependent phytotoxicity of catechins and other flavonoids: flavonoid conversions by cell-free protein extracts of Centaurea maculosa (spotted knapweed) roots.
Year : 2003
Volume : 51
Issue : 4
First Page : 897
Last Page : 901
Authors : Bais HP, Walker TS, Kennan AJ, Stermitz FR, Vivanco JM.
Abstract : Invasive plants are believed to succeed in part by secretion of allelochemicals, thus displacing competing plant species. Centaurea maculosa (spotted knapweed) provides a classic example of this process. We have previously reported that spotted knapweed roots secrete (+/-)-catechin and that (-)-catechin, but not (+)-catechin, is phytotoxic and hence may be a major contributor to C. maculosa's invasive behavior in the rhizosphere. In this communication, we explore both structure/activity relationships for flavonoid phytotoxicity and possible biosynthetic pathways for root production of (+/-)-catechin. Kaempferol and dihydroquercetin were shown to be phytotoxic, while quercetin was not. Kaempferol was converted to dihydroquercetin and (+/-)-catechin when treated with total root protein extracts from C. maculosa, but quercetin was not. This finding suggests an alteration in the standard flavonoid biosynthetic pathway in C. maculosa roots, whereby kaempferol is not a dead-end product but serves as a precursor to dihydroquercetin, which in turn leads to (+/-)-catechin production.
Phytotoxicity in Centaurea maculosa assessed as inhibition of seed germination at 250 ug/mL measured on day 14 relative to untreated control
|
Centaurea maculosa
|
None
|
|
Journal : J Agric Food Chem
Title : Structure-dependent phytotoxicity of catechins and other flavonoids: flavonoid conversions by cell-free protein extracts of Centaurea maculosa (spotted knapweed) roots.
Year : 2003
Volume : 51
Issue : 4
First Page : 897
Last Page : 901
Authors : Bais HP, Walker TS, Kennan AJ, Stermitz FR, Vivanco JM.
Abstract : Invasive plants are believed to succeed in part by secretion of allelochemicals, thus displacing competing plant species. Centaurea maculosa (spotted knapweed) provides a classic example of this process. We have previously reported that spotted knapweed roots secrete (+/-)-catechin and that (-)-catechin, but not (+)-catechin, is phytotoxic and hence may be a major contributor to C. maculosa's invasive behavior in the rhizosphere. In this communication, we explore both structure/activity relationships for flavonoid phytotoxicity and possible biosynthetic pathways for root production of (+/-)-catechin. Kaempferol and dihydroquercetin were shown to be phytotoxic, while quercetin was not. Kaempferol was converted to dihydroquercetin and (+/-)-catechin when treated with total root protein extracts from C. maculosa, but quercetin was not. This finding suggests an alteration in the standard flavonoid biosynthetic pathway in C. maculosa roots, whereby kaempferol is not a dead-end product but serves as a precursor to dihydroquercetin, which in turn leads to (+/-)-catechin production.
Phytotoxicity in Centaurea maculosa assessed as inhibition of root differentiation at 250 ug/mL measured on day 14 relative to untreated control
|
Centaurea maculosa
|
None
|
|
Journal : J Agric Food Chem
Title : Structure-dependent phytotoxicity of catechins and other flavonoids: flavonoid conversions by cell-free protein extracts of Centaurea maculosa (spotted knapweed) roots.
Year : 2003
Volume : 51
Issue : 4
First Page : 897
Last Page : 901
Authors : Bais HP, Walker TS, Kennan AJ, Stermitz FR, Vivanco JM.
Abstract : Invasive plants are believed to succeed in part by secretion of allelochemicals, thus displacing competing plant species. Centaurea maculosa (spotted knapweed) provides a classic example of this process. We have previously reported that spotted knapweed roots secrete (+/-)-catechin and that (-)-catechin, but not (+)-catechin, is phytotoxic and hence may be a major contributor to C. maculosa's invasive behavior in the rhizosphere. In this communication, we explore both structure/activity relationships for flavonoid phytotoxicity and possible biosynthetic pathways for root production of (+/-)-catechin. Kaempferol and dihydroquercetin were shown to be phytotoxic, while quercetin was not. Kaempferol was converted to dihydroquercetin and (+/-)-catechin when treated with total root protein extracts from C. maculosa, but quercetin was not. This finding suggests an alteration in the standard flavonoid biosynthetic pathway in C. maculosa roots, whereby kaempferol is not a dead-end product but serves as a precursor to dihydroquercetin, which in turn leads to (+/-)-catechin production.
Phytotoxicity in Centaurea maculosa assessed as inhibition of shoot differentiation at 250 ug/mL measured on day 14 relative to untreated control
|
Centaurea maculosa
|
None
|
|
Journal : J Agric Food Chem
Title : Structure-dependent phytotoxicity of catechins and other flavonoids: flavonoid conversions by cell-free protein extracts of Centaurea maculosa (spotted knapweed) roots.
Year : 2003
Volume : 51
Issue : 4
First Page : 897
Last Page : 901
Authors : Bais HP, Walker TS, Kennan AJ, Stermitz FR, Vivanco JM.
Abstract : Invasive plants are believed to succeed in part by secretion of allelochemicals, thus displacing competing plant species. Centaurea maculosa (spotted knapweed) provides a classic example of this process. We have previously reported that spotted knapweed roots secrete (+/-)-catechin and that (-)-catechin, but not (+)-catechin, is phytotoxic and hence may be a major contributor to C. maculosa's invasive behavior in the rhizosphere. In this communication, we explore both structure/activity relationships for flavonoid phytotoxicity and possible biosynthetic pathways for root production of (+/-)-catechin. Kaempferol and dihydroquercetin were shown to be phytotoxic, while quercetin was not. Kaempferol was converted to dihydroquercetin and (+/-)-catechin when treated with total root protein extracts from C. maculosa, but quercetin was not. This finding suggests an alteration in the standard flavonoid biosynthetic pathway in C. maculosa roots, whereby kaempferol is not a dead-end product but serves as a precursor to dihydroquercetin, which in turn leads to (+/-)-catechin production.
Antibacterial activity against Ralstonia solanacearum grown on potato semi-synthetic agar medium at 5 umol/disk by paper disk method
|
Ralstonia solanacearum
|
None
|
|
Journal : J Pesticide Sci
Title : Antibacterial activity of alkyl gallates and related compounds against Ralstonia solanacearum
Year : 2011
Volume : 36
Issue : 2
First Page : 240
Last Page : 242
Authors : Ooshiro A, Kaji M, Katoh Y, Kawaide H, Natsume M
Antibacterial activity against Ralstonia solanacearum grown on potato semi-synthetic agar medium at 0.5 umol/disk by paper disk method
|
Ralstonia solanacearum
|
None
|
|
Journal : J Pesticide Sci
Title : Antibacterial activity of alkyl gallates and related compounds against Ralstonia solanacearum
Year : 2011
Volume : 36
Issue : 2
First Page : 240
Last Page : 242
Authors : Ooshiro A, Kaji M, Katoh Y, Kawaide H, Natsume M
Antioxidant activity assessed as DPPH free radical scavenging activity at 5 to 100 uM after 30 min by spectrophotometric analysis
|
None
|
None
|
|
Journal : J Agric Food Chem
Title : Herbicidal, plant growth inhibitory, and cytotoxic activities of bismuthines containing aromatic heterocycles.
Year : 2003
Volume : 51
Issue : 10
First Page : 2923
Last Page : 2929
Authors : Céspedes CL, Lemus A, Salazar JR, Cabrera A, Sharma P.
Abstract : This work presents the herbicidal and plant growth regulatory activities of tertiary bismuthines containing heterocyclic aromatic rings of the general formula (2-C(4)H(3)X)(3)Bi, where X = S (3), O (1), or NMe (2). Toxicity against Artemia salina and herbicidal activity on Lactuca sativa, Trifolium pratense, and Lolium multiflorum were tested. In addition to the effects on mitochondrial respiration obtained from roots of Phaseolus vulgaris, these compounds also demonstrated partial radical scavenging properties against 2,2-diphenyl-1-picrylhydrazyl (DPPH). The furyl substituent is the most important structural requirement for the activity measurements observed in this study.
Antifeedant activity against Spodoptera litura in compound treated cork borer from fresh sweet potato leaves by Choice Leaf-Disk Bioassay
|
Spodoptera litura
|
None
|
|
Journal : J Agric Food Chem
Title : Insect antifeedant flavonoids from Gnaphalium affine D. Don.
Year : 2000
Volume : 48
Issue : 5
First Page : 1888
Last Page : 1891
Authors : Morimoto M, Kumeda S, Komai K.
Abstract : The antifeedant flavonoids, 5-hydroxy-3,6,7,8,4'-pentamethoxyflavone (1), 5-hydroxy-3,6,7,8-tetramethoxyflavone (2), 5,6-dihydroxy-3, 7-dimethoxyflavone (3), and 4,4',6'-trihydroxy-2'-methoxychalcone (4), have been isolated from cudweed Gnaphalium affine D. Don (Compositae). Four natural flavonoids showed insect antifeedant activity against the common cutworm (Spodoptera litura F.). These flavonoids were detected in small amounts in the plant by HPLC analysis, but these natural compounds had strong antifeedant activity against the common cutworm. On the other hand, 4 was detected in a large amount in the plant, but this compound had only a slight activity. Therefore, these natural compounds were regarded as one of the plant's defensive systems against phytophagous insects along with the woolly plant surface. As for the structure-activity relationship, it is an advantage for antifeedant activity to have no oxy-substituents on the B-ring of the flavonoid but have an ether linkage such as a pyran in the chemical structure.
Antifeedant activity against third-instar Xanthogaleruca luteola assessed per cm2 leaf disk after 24 hr by leaf-disk choice test
|
Xanthogaleruca luteola
|
178.52
ug
|
|
Journal : Bioresour Technol
Title : Antifeedant activity of ethanolic extract from Flourensia oolepis and isolation of pinocembrin as its active principle compound.
Year : 2009
Volume : 100
Issue : 14
First Page : 3669
Last Page : 3673
Authors : Diaz Napal GN, Carpinella MC, Palacios SM.
Abstract : The ethanolic extract from Flourensia oolepis aerial parts showed strong antifeedant activity against the pest larvae, Epilachna paenulata, with an antifeedant index (AI%) of 99.1% at 100 microg/cm(2). Based on chromatographic fractionation of the extract, guided by bioassays on E. paenulata, the flavanone pinocembrin (1) was isolated as the most active principle. In a choice assay, compound 1 showed strong antifeedant activity against E. paenulata, Xanthogaleruca luteola and Spodoptera frugiperda with an AI% of 90, 94 and 91% (p<0.01) respectively, at 50 microg/cm(2). The dosages necessary for 50% feeding inhibition of the insects (ED(50)) were 7.98, 6.13 and 8.86 microg/cm(2), respectively. The feeding inhibitory activity of 1 against E. paenulata was compared with the activity of other structurally related flavonoids like naringenin, which was inactive up to 100 microg/cm(2), catechin which was nearly 6 times less active than 1, and quercetin which was equally active as 1. The effect of these on the feeding behavior of E. paenulata was also studied.
Antifeedant activity against third-instar Epilachna paenulata measured assessed per cm2 leaf disk after 24 hr by leaf disk choice test
|
Epilachna
|
9.26
ug
|
|
Journal : Bioresour Technol
Title : Antifeedant activity of ethanolic extract from Flourensia oolepis and isolation of pinocembrin as its active principle compound.
Year : 2009
Volume : 100
Issue : 14
First Page : 3669
Last Page : 3673
Authors : Diaz Napal GN, Carpinella MC, Palacios SM.
Abstract : The ethanolic extract from Flourensia oolepis aerial parts showed strong antifeedant activity against the pest larvae, Epilachna paenulata, with an antifeedant index (AI%) of 99.1% at 100 microg/cm(2). Based on chromatographic fractionation of the extract, guided by bioassays on E. paenulata, the flavanone pinocembrin (1) was isolated as the most active principle. In a choice assay, compound 1 showed strong antifeedant activity against E. paenulata, Xanthogaleruca luteola and Spodoptera frugiperda with an AI% of 90, 94 and 91% (p<0.01) respectively, at 50 microg/cm(2). The dosages necessary for 50% feeding inhibition of the insects (ED(50)) were 7.98, 6.13 and 8.86 microg/cm(2), respectively. The feeding inhibitory activity of 1 against E. paenulata was compared with the activity of other structurally related flavonoids like naringenin, which was inactive up to 100 microg/cm(2), catechin which was nearly 6 times less active than 1, and quercetin which was equally active as 1. The effect of these on the feeding behavior of E. paenulata was also studied.
Antifeedant activity against third-instar Spodoptera litura assessed per cm2 leaf disk
|
Spodoptera litura
|
None
|
|
Journal : Bioresour Technol
Title : Antifeedant activity of ethanolic extract from Flourensia oolepis and isolation of pinocembrin as its active principle compound.
Year : 2009
Volume : 100
Issue : 14
First Page : 3669
Last Page : 3673
Authors : Diaz Napal GN, Carpinella MC, Palacios SM.
Abstract : The ethanolic extract from Flourensia oolepis aerial parts showed strong antifeedant activity against the pest larvae, Epilachna paenulata, with an antifeedant index (AI%) of 99.1% at 100 microg/cm(2). Based on chromatographic fractionation of the extract, guided by bioassays on E. paenulata, the flavanone pinocembrin (1) was isolated as the most active principle. In a choice assay, compound 1 showed strong antifeedant activity against E. paenulata, Xanthogaleruca luteola and Spodoptera frugiperda with an AI% of 90, 94 and 91% (p<0.01) respectively, at 50 microg/cm(2). The dosages necessary for 50% feeding inhibition of the insects (ED(50)) were 7.98, 6.13 and 8.86 microg/cm(2), respectively. The feeding inhibitory activity of 1 against E. paenulata was compared with the activity of other structurally related flavonoids like naringenin, which was inactive up to 100 microg/cm(2), catechin which was nearly 6 times less active than 1, and quercetin which was equally active as 1. The effect of these on the feeding behavior of E. paenulata was also studied.
Antifungal activity against Rhizopus oryzae MTCC 262 assessed as growth inhibition after 48 hr by broth dilution method
|
Rhizopus oryzae
|
None
|
|
Journal : Med Chem Res
Title : Synthesis and antimicrobial activity of bischalcone derivatives
Year : 2013
Volume : 22
Issue : 4
First Page : 1578
Last Page : 1586
Authors : Husain A, Ahmad A, Mkhalid IAI, Mishra R, Rashid M
Antifungal activity against Aspergillus niger ATCC 16404 assessed as growth inhibition after 48 hr by broth dilution method
|
Aspergillus niger
|
None
|
|
Journal : Med Chem Res
Title : Synthesis and antimicrobial activity of bischalcone derivatives
Year : 2013
Volume : 22
Issue : 4
First Page : 1578
Last Page : 1586
Authors : Husain A, Ahmad A, Mkhalid IAI, Mishra R, Rashid M
Antifungal activity against Candida albicans ATCC 10231 assessed as growth inhibition after 48 hr by broth dilution method
|
Candida albicans
|
100.0
ug.mL-1
|
|
Journal : Med Chem Res
Title : Synthesis and antimicrobial activity of bischalcone derivatives
Year : 2013
Volume : 22
Issue : 4
First Page : 1578
Last Page : 1586
Authors : Husain A, Ahmad A, Mkhalid IAI, Mishra R, Rashid M
Antibacterial activity against Pseudomonas aeruginosa ATCC 27853 assessed as growth inhibition after 24 hr by broth dilution method
|
Pseudomonas aeruginosa
|
None
|
|
Journal : Med Chem Res
Title : Synthesis and antimicrobial activity of bischalcone derivatives
Year : 2013
Volume : 22
Issue : 4
First Page : 1578
Last Page : 1586
Authors : Husain A, Ahmad A, Mkhalid IAI, Mishra R, Rashid M
Antibacterial activity against Escherichia coli ATCC 25922 assessed as growth inhibition after 24 hr by broth dilution method
|
Escherichia coli
|
100.0
ug.mL-1
|
|
Journal : Med Chem Res
Title : Synthesis and antimicrobial activity of bischalcone derivatives
Year : 2013
Volume : 22
Issue : 4
First Page : 1578
Last Page : 1586
Authors : Husain A, Ahmad A, Mkhalid IAI, Mishra R, Rashid M
Antibacterial activity against Staphylococcus aureus ATCC 25923 assessed as growth inhibition after 24 hr by broth dilution method
|
Staphylococcus aureus
|
100.0
ug.mL-1
|
|
Journal : Med Chem Res
Title : Synthesis and antimicrobial activity of bischalcone derivatives
Year : 2013
Volume : 22
Issue : 4
First Page : 1578
Last Page : 1586
Authors : Husain A, Ahmad A, Mkhalid IAI, Mishra R, Rashid M
Inhibition of xanthine oxidase assessed as conversion of xanthine to uric acid incubated for 3 min
|
None
|
10000.0
nM
|
|
Journal : Phytochemistry
Title : Bioactive ellagitannins from Cunonia macrophylla, an endemic Cunoniaceae from New Caledonia.
Year : 2005
Volume : 66
Issue : 2
First Page : 241
Last Page : 247
Authors : Fogliani B, Raharivelomanana P, Bianchini JP, Bouraïma-Madjèbi S, Hnawia E.
Abstract : Chemical study of Cunonia macrophylla, a New Caledonian Cunoniaceae, based on bioactive effects of a crude methanol extract of the leaves, detected bioactive tannins for the first time in this plant family. These ellagitannins have been identified as ellagic acid-4-O-beta-D-xylopyranoside (6), mallorepanin (3), mallotinic acid (1) along with corilagin (2), chebulagic acid (4), ellagic acid (5) and gallic acid (7) and have been shown to possess antimicrobial activity and to inhibit xanthine oxidase. Antimicrobial effects on bacterial human pathogens (Staphylococcus aureus, Corynebacterium accolans) and on a plant pathogen (Erwinia carotovora) as well as on a human pathogenic yeast (Candida albicans) were investigated. Activity is reported here for the first time for compounds 1, 3, 4 and 6. The inhibitory effects of all molecules against xanthine oxidase in relation to their structure was evaluated and compared. Compound 6 presented the best activity and seems to be of considerable interest for further studies.
Antioxidant activity assessed as DPPH radical scavenging activity at 3.6 mM after 20 min
|
None
|
78.05
%
|
|
Journal : Med Chem Res
Title : Anti-tyrosinase, antioxidant and antimicrobial activities of hydroxycinnamoylamides
Year : 2013
Volume : 22
Issue : 9
First Page : 4173
Last Page : 4182
Authors : Georgiev L, Chochkova M, Totseva I, Seizova K, Marinova E, Ivanova G, Ninova M, Najdenski H, Milkova T
Antioxidant activity assessed as DPPH radical scavenging activity at 3.6 mM after 10 min
|
None
|
76.01
%
|
|
Journal : Med Chem Res
Title : Anti-tyrosinase, antioxidant and antimicrobial activities of hydroxycinnamoylamides
Year : 2013
Volume : 22
Issue : 9
First Page : 4173
Last Page : 4182
Authors : Georgiev L, Chochkova M, Totseva I, Seizova K, Marinova E, Ivanova G, Ninova M, Najdenski H, Milkova T
Antioxidant activity assessed as DPPH radical scavenging activity at 1.8 mM after 20 min
|
None
|
58.36
%
|
|
Journal : Med Chem Res
Title : Anti-tyrosinase, antioxidant and antimicrobial activities of hydroxycinnamoylamides
Year : 2013
Volume : 22
Issue : 9
First Page : 4173
Last Page : 4182
Authors : Georgiev L, Chochkova M, Totseva I, Seizova K, Marinova E, Ivanova G, Ninova M, Najdenski H, Milkova T
Antioxidant activity assessed as DPPH radical scavenging activity at 0.9 mM after 20 min
|
None
|
45.18
%
|
|
Journal : Med Chem Res
Title : Anti-tyrosinase, antioxidant and antimicrobial activities of hydroxycinnamoylamides
Year : 2013
Volume : 22
Issue : 9
First Page : 4173
Last Page : 4182
Authors : Georgiev L, Chochkova M, Totseva I, Seizova K, Marinova E, Ivanova G, Ninova M, Najdenski H, Milkova T
Antioxidant activity assessed as DPPH radical scavenging activity at 1.8 mM after 10 min
|
None
|
46.68
%
|
|
Journal : Med Chem Res
Title : Anti-tyrosinase, antioxidant and antimicrobial activities of hydroxycinnamoylamides
Year : 2013
Volume : 22
Issue : 9
First Page : 4173
Last Page : 4182
Authors : Georgiev L, Chochkova M, Totseva I, Seizova K, Marinova E, Ivanova G, Ninova M, Najdenski H, Milkova T
Antioxidant activity assessed as DPPH radical scavenging activity at 0.9 mM after 10 min
|
None
|
40.43
%
|
|
Journal : Med Chem Res
Title : Anti-tyrosinase, antioxidant and antimicrobial activities of hydroxycinnamoylamides
Year : 2013
Volume : 22
Issue : 9
First Page : 4173
Last Page : 4182
Authors : Georgiev L, Chochkova M, Totseva I, Seizova K, Marinova E, Ivanova G, Ninova M, Najdenski H, Milkova T
Non-competitive inhibition of trypsin (unknown origin) using BApNA as substrate by Lineweaver-Burk/Dixon plot analysis
|
Homo sapiens
|
13100.0
nM
|
|
Journal : Med Chem Res
Title : Trypsin inhibitory potential and microbial transformation of rutin isolated from Citrus sinensis
Year : 2013
Volume : 22
Issue : 8
First Page : 3698
Last Page : 3702
Authors : Raza MA, Shahwar D
Inhibition of trypsin (unknown origin) using BApNA as substrate incubated for 15 min prior to substrate addition measured after 30 min by UV/VIS spectrophotometric analysis
|
Homo sapiens
|
19000.0
nM
|
|
Journal : Med Chem Res
Title : Trypsin inhibitory potential and microbial transformation of rutin isolated from Citrus sinensis
Year : 2013
Volume : 22
Issue : 8
First Page : 3698
Last Page : 3702
Authors : Raza MA, Shahwar D
Binding affinity to Helicobacter pylori Ddl by surface plasmon resonance biosensor technology
|
Helicobacter pylori
|
12900.0
nM
|
|
Journal : Med Chem Res
Title : Molecular docking studies on analogues of quercetin with d-alanine:d-alanine ligase of Helicobacter pylori
Year : 2013
Volume : 22
Issue : 5
First Page : 2139
Last Page : 2150
Authors : Singh SP, Konwarh R, Konwar BK, Karak N
Antibacterial activity against Escherichia coli 25922 assessed as growth inhibition
|
Escherichia coli
|
300.0
ug.mL-1
|
|
Journal : Med Chem Res
Title : Molecular docking studies on analogues of quercetin with d-alanine:d-alanine ligase of Helicobacter pylori
Year : 2013
Volume : 22
Issue : 5
First Page : 2139
Last Page : 2150
Authors : Singh SP, Konwarh R, Konwar BK, Karak N
Antibacterial activity against Helicobacter pylori 43504 assessed as growth inhibition
|
Helicobacter pylori
|
100.0
ug.mL-1
|
|
Journal : Med Chem Res
Title : Molecular docking studies on analogues of quercetin with d-alanine:d-alanine ligase of Helicobacter pylori
Year : 2013
Volume : 22
Issue : 5
First Page : 2139
Last Page : 2150
Authors : Singh SP, Konwarh R, Konwar BK, Karak N
Antibacterial activity against Escherichia coli JM019 assessed as growth inhibition
|
Escherichia coli
|
300.0
ug.mL-1
|
|
Journal : Med Chem Res
Title : Molecular docking studies on analogues of quercetin with d-alanine:d-alanine ligase of Helicobacter pylori
Year : 2013
Volume : 22
Issue : 5
First Page : 2139
Last Page : 2150
Authors : Singh SP, Konwarh R, Konwar BK, Karak N
Antibacterial activity against Helicobacter pylori SS1 assessed as growth inhibition
|
Helicobacter pylori SS1
|
200.0
ug.mL-1
|
|
Journal : Med Chem Res
Title : Molecular docking studies on analogues of quercetin with d-alanine:d-alanine ligase of Helicobacter pylori
Year : 2013
Volume : 22
Issue : 5
First Page : 2139
Last Page : 2150
Authors : Singh SP, Konwarh R, Konwar BK, Karak N
Competitive inhibition of Helicobacter pylori Ddl using ATP as substrate
|
Helicobacter pylori
|
4300.0
nM
|
|
Competitive inhibition of Helicobacter pylori Ddl using ATP as substrate
|
Helicobacter pylori
|
48500.0
nM
|
|
Journal : Med Chem Res
Title : Molecular docking studies on analogues of quercetin with d-alanine:d-alanine ligase of Helicobacter pylori
Year : 2013
Volume : 22
Issue : 5
First Page : 2139
Last Page : 2150
Authors : Singh SP, Konwarh R, Konwar BK, Karak N
Competitive inhibition of Escherichia coli DdlB using ATP as substrate
|
Escherichia coli
|
19900.0
nM
|
|
Journal : Med Chem Res
Title : Molecular docking studies on analogues of quercetin with d-alanine:d-alanine ligase of Helicobacter pylori
Year : 2013
Volume : 22
Issue : 5
First Page : 2139
Last Page : 2150
Authors : Singh SP, Konwarh R, Konwar BK, Karak N
Antitubercular activity against Mycobacterium tuberculosis H37Rv ATCC 27294 measured every 24 hr by BACTEC 460 radiometric assay
|
Mycobacterium tuberculosis H37Rv
|
50.0
ug.mL-1
|
|
Antitubercular activity against Mycobacterium tuberculosis H37Rv ATCC 27294 measured every 24 hr by BACTEC 460 radiometric assay
|
Mycobacterium tuberculosis H37Rv
|
3.91
|
|
Journal : Med Chem Res
Title : Screening of flavonoids for antitubercular activity and their structureactivity relationships
Year : 2013
Volume : 22
Issue : 6
First Page : 2706
Last Page : 2716
Authors : Yadav AK, Thakur J, Prakash O, Khan F, Saikia D, Gupta MM
Inhibition of NADPH oxidase in Homo sapiens (human) HUVEC cells
|
Homo sapiens
|
100000.0
nM
|
|
Journal : Med Chem Res
Title : Flavonoids as lead compounds modulating the enzyme targets in Alzheimers disease
Year : 2013
Volume : 22
Issue : 7
First Page : 3061
Last Page : 3075
Authors : Anand P, Singh B
Inhibition of Homo sapiens (human) recombinant GSK3beta after 30 min by Kinase-Glo assay
|
Homo sapiens
|
2000.0
nM
|
|
Journal : Med Chem Res
Title : Flavonoids as lead compounds modulating the enzyme targets in Alzheimers disease
Year : 2013
Volume : 22
Issue : 7
First Page : 3061
Last Page : 3075
Authors : Anand P, Singh B
Inhibition of BACE1 (unknown origin)
|
Homo sapiens
|
5400.0
nM
|
|
Journal : Med Chem Res
Title : Flavonoids as lead compounds modulating the enzyme targets in Alzheimers disease
Year : 2013
Volume : 22
Issue : 7
First Page : 3061
Last Page : 3075
Authors : Anand P, Singh B
Inhibition of BuChE (unknown origin)
|
Homo sapiens
|
420760.0
nM
|
|
Journal : Med Chem Res
Title : Flavonoids as lead compounds modulating the enzyme targets in Alzheimers disease
Year : 2013
Volume : 22
Issue : 7
First Page : 3061
Last Page : 3075
Authors : Anand P, Singh B
Inhibition of AChE (unknown origin)
|
Homo sapiens
|
353860.0
nM
|
|
Journal : Med Chem Res
Title : Flavonoids as lead compounds modulating the enzyme targets in Alzheimers disease
Year : 2013
Volume : 22
Issue : 7
First Page : 3061
Last Page : 3075
Authors : Anand P, Singh B