|
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.
|
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.
|
Phytotoxic activity against Trifolium repens assessed as inhibition of hypocotyl growth at 22 +/-2 degC after 72 hr
|
Trifolium repens
|
169000.0
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 Amaranthus retroflexus assessed as inhibition of hypocotyl growth at 22 +/-2 degC after 72 hr
|
Amaranthus retroflexus
|
9296000.0
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
|
780000.0
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 Plantago lanceolata assessed as inhibition of hypocotyl growth at 22 +/-2 degC after 72 hr
|
Plantago lanceolata
|
360000.0
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
|
120000.0
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
|
148000.0
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 Achillea millefolium assessed as inhibition of hypocotyl growth at 22 +/-2 degC after 72 hr
|
Achillea millefolium
|
527000.0
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
|
433000.0
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 Amaranthus retroflexus assessed as inhibition of root growth at 22 +/-2 degC after 72 hr
|
Amaranthus retroflexus
|
2830000.0
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
|
445000.0
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 Plantago lanceolata assessed as inhibition of root growth at 22 +/-2 degC after 72 hr
|
Plantago lanceolata
|
55000.0
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
|
377000.0
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
|
362000.0
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 Achillea millefolium assessed as inhibition of root growth at 22 +/-2 degC after 72 hr
|
Achillea millefolium
|
472000.0
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 in liposomal model assessed as inhibition of Fe2 ions-induced lipid peroxidation
|
None
|
1.79
|
|
Journal : Med Chem Res
Title : QSAR modeling of anthocyanins, anthocyanidins and catechins as inhibitors of lipid peroxidation using three-dimensional descriptors
Year : 2009
Volume : 18
Issue : 7
First Page : 579
Last Page : 588
Authors : Rastija V, Medic-Saric M
|
Antifungal activity against Penicillium sp. at 12.5 to 25 ug/ml after 96 hr by spectrophotometry
|
Penicillium sp.
|
None
|
|
Journal : J Agric Food Chem
Title : Phytotoxic and antimicrobial activities of catechin derivatives.
Year : 2004
Volume : 52
Issue : 5
First Page : 1077
Last Page : 1082
Authors : Veluri R, Weir TL, Bais HP, Stermitz FR, Vivanco JM.
Abstract : (+/-)-Catechin is a potent phytotoxin, with the phytotoxicity due entirely to the (-)-catechin enantiomer. (+)-Catechin, but not the (-)-enantiomer, has antibacterial and antifungal activities. Tetramethoxy, pentaacetoxy, and cyclic derivatives of (+/-)-catechin retained phytotoxicity. The results indicate that antioxidant properties of catechins are not a determining factor for phytotoxicity. A similar conclusion was reached for the antimicrobial properties. Centaurea maculosa (spotted knapweed) exudes (+/-)-catechin from its roots, but the flavanol is not re-absorbed and hence the weed is not affected. The much less polar tetramethoxy derivative may, however, be absorbed and hence be able to cause toxicity. Because of the combination of phytotoxicity and antimicrobial activity, (+/-)-catechin could be a useful natural herbicide and antimicrobial.
|
Antifungal activity against Aspergillus niger at 12.5 to 25 ug/ml after 96 hr by spectrophotometry
|
Aspergillus niger
|
None
|
|
Journal : J Agric Food Chem
Title : Phytotoxic and antimicrobial activities of catechin derivatives.
Year : 2004
Volume : 52
Issue : 5
First Page : 1077
Last Page : 1082
Authors : Veluri R, Weir TL, Bais HP, Stermitz FR, Vivanco JM.
Abstract : (+/-)-Catechin is a potent phytotoxin, with the phytotoxicity due entirely to the (-)-catechin enantiomer. (+)-Catechin, but not the (-)-enantiomer, has antibacterial and antifungal activities. Tetramethoxy, pentaacetoxy, and cyclic derivatives of (+/-)-catechin retained phytotoxicity. The results indicate that antioxidant properties of catechins are not a determining factor for phytotoxicity. A similar conclusion was reached for the antimicrobial properties. Centaurea maculosa (spotted knapweed) exudes (+/-)-catechin from its roots, but the flavanol is not re-absorbed and hence the weed is not affected. The much less polar tetramethoxy derivative may, however, be absorbed and hence be able to cause toxicity. Because of the combination of phytotoxicity and antimicrobial activity, (+/-)-catechin could be a useful natural herbicide and antimicrobial.
|
Antifungal activity against Fusarium oxysporum at 12.5 to 25 ug/ml after 96 hr by spectrophotometry
|
Fusarium oxysporum
|
None
|
|
Journal : J Agric Food Chem
Title : Phytotoxic and antimicrobial activities of catechin derivatives.
Year : 2004
Volume : 52
Issue : 5
First Page : 1077
Last Page : 1082
Authors : Veluri R, Weir TL, Bais HP, Stermitz FR, Vivanco JM.
Abstract : (+/-)-Catechin is a potent phytotoxin, with the phytotoxicity due entirely to the (-)-catechin enantiomer. (+)-Catechin, but not the (-)-enantiomer, has antibacterial and antifungal activities. Tetramethoxy, pentaacetoxy, and cyclic derivatives of (+/-)-catechin retained phytotoxicity. The results indicate that antioxidant properties of catechins are not a determining factor for phytotoxicity. A similar conclusion was reached for the antimicrobial properties. Centaurea maculosa (spotted knapweed) exudes (+/-)-catechin from its roots, but the flavanol is not re-absorbed and hence the weed is not affected. The much less polar tetramethoxy derivative may, however, be absorbed and hence be able to cause toxicity. Because of the combination of phytotoxicity and antimicrobial activity, (+/-)-catechin could be a useful natural herbicide and antimicrobial.
|
Antifungal activity against Hypocrea rufa at 12.5 to 25 ug/ml after 96 hr by spectrophotometry
|
Hypocrea rufa
|
None
|
|
Journal : J Agric Food Chem
Title : Phytotoxic and antimicrobial activities of catechin derivatives.
Year : 2004
Volume : 52
Issue : 5
First Page : 1077
Last Page : 1082
Authors : Veluri R, Weir TL, Bais HP, Stermitz FR, Vivanco JM.
Abstract : (+/-)-Catechin is a potent phytotoxin, with the phytotoxicity due entirely to the (-)-catechin enantiomer. (+)-Catechin, but not the (-)-enantiomer, has antibacterial and antifungal activities. Tetramethoxy, pentaacetoxy, and cyclic derivatives of (+/-)-catechin retained phytotoxicity. The results indicate that antioxidant properties of catechins are not a determining factor for phytotoxicity. A similar conclusion was reached for the antimicrobial properties. Centaurea maculosa (spotted knapweed) exudes (+/-)-catechin from its roots, but the flavanol is not re-absorbed and hence the weed is not affected. The much less polar tetramethoxy derivative may, however, be absorbed and hence be able to cause toxicity. Because of the combination of phytotoxicity and antimicrobial activity, (+/-)-catechin could be a useful natural herbicide and antimicrobial.
|
Antifungal activity against Trichoderma reesei at 12.5 to 25 ug/ml after 96 hr by spectrophotometry
|
Trichoderma reesei
|
None
|
|
Journal : J Agric Food Chem
Title : Phytotoxic and antimicrobial activities of catechin derivatives.
Year : 2004
Volume : 52
Issue : 5
First Page : 1077
Last Page : 1082
Authors : Veluri R, Weir TL, Bais HP, Stermitz FR, Vivanco JM.
Abstract : (+/-)-Catechin is a potent phytotoxin, with the phytotoxicity due entirely to the (-)-catechin enantiomer. (+)-Catechin, but not the (-)-enantiomer, has antibacterial and antifungal activities. Tetramethoxy, pentaacetoxy, and cyclic derivatives of (+/-)-catechin retained phytotoxicity. The results indicate that antioxidant properties of catechins are not a determining factor for phytotoxicity. A similar conclusion was reached for the antimicrobial properties. Centaurea maculosa (spotted knapweed) exudes (+/-)-catechin from its roots, but the flavanol is not re-absorbed and hence the weed is not affected. The much less polar tetramethoxy derivative may, however, be absorbed and hence be able to cause toxicity. Because of the combination of phytotoxicity and antimicrobial activity, (+/-)-catechin could be a useful natural herbicide and antimicrobial.
|
Bactericidal activity against Pseudomonas fluorescens at 3.1 ug/ml after 24 hr by BacLight bacterial viability fluorescence assay
|
Pseudomonas fluorescens
|
None
|
|
Journal : J Agric Food Chem
Title : Phytotoxic and antimicrobial activities of catechin derivatives.
Year : 2004
Volume : 52
Issue : 5
First Page : 1077
Last Page : 1082
Authors : Veluri R, Weir TL, Bais HP, Stermitz FR, Vivanco JM.
Abstract : (+/-)-Catechin is a potent phytotoxin, with the phytotoxicity due entirely to the (-)-catechin enantiomer. (+)-Catechin, but not the (-)-enantiomer, has antibacterial and antifungal activities. Tetramethoxy, pentaacetoxy, and cyclic derivatives of (+/-)-catechin retained phytotoxicity. The results indicate that antioxidant properties of catechins are not a determining factor for phytotoxicity. A similar conclusion was reached for the antimicrobial properties. Centaurea maculosa (spotted knapweed) exudes (+/-)-catechin from its roots, but the flavanol is not re-absorbed and hence the weed is not affected. The much less polar tetramethoxy derivative may, however, be absorbed and hence be able to cause toxicity. Because of the combination of phytotoxicity and antimicrobial activity, (+/-)-catechin could be a useful natural herbicide and antimicrobial.
|
Bactericidal activity against Erwinia amylovora at 1.6 ug/ml after 24 hr by BacLight bacterial viability fluorescence assay
|
Erwinia amylovora
|
None
|
|
Journal : J Agric Food Chem
Title : Phytotoxic and antimicrobial activities of catechin derivatives.
Year : 2004
Volume : 52
Issue : 5
First Page : 1077
Last Page : 1082
Authors : Veluri R, Weir TL, Bais HP, Stermitz FR, Vivanco JM.
Abstract : (+/-)-Catechin is a potent phytotoxin, with the phytotoxicity due entirely to the (-)-catechin enantiomer. (+)-Catechin, but not the (-)-enantiomer, has antibacterial and antifungal activities. Tetramethoxy, pentaacetoxy, and cyclic derivatives of (+/-)-catechin retained phytotoxicity. The results indicate that antioxidant properties of catechins are not a determining factor for phytotoxicity. A similar conclusion was reached for the antimicrobial properties. Centaurea maculosa (spotted knapweed) exudes (+/-)-catechin from its roots, but the flavanol is not re-absorbed and hence the weed is not affected. The much less polar tetramethoxy derivative may, however, be absorbed and hence be able to cause toxicity. Because of the combination of phytotoxicity and antimicrobial activity, (+/-)-catechin could be a useful natural herbicide and antimicrobial.
|
Bactericidal activity against Pectobacterium carotovorum at 3.1 ug/ml after 24 hr by BacLight bacterial viability fluorescence assay
|
Pectobacterium carotovorum
|
None
|
|
Journal : J Agric Food Chem
Title : Phytotoxic and antimicrobial activities of catechin derivatives.
Year : 2004
Volume : 52
Issue : 5
First Page : 1077
Last Page : 1082
Authors : Veluri R, Weir TL, Bais HP, Stermitz FR, Vivanco JM.
Abstract : (+/-)-Catechin is a potent phytotoxin, with the phytotoxicity due entirely to the (-)-catechin enantiomer. (+)-Catechin, but not the (-)-enantiomer, has antibacterial and antifungal activities. Tetramethoxy, pentaacetoxy, and cyclic derivatives of (+/-)-catechin retained phytotoxicity. The results indicate that antioxidant properties of catechins are not a determining factor for phytotoxicity. A similar conclusion was reached for the antimicrobial properties. Centaurea maculosa (spotted knapweed) exudes (+/-)-catechin from its roots, but the flavanol is not re-absorbed and hence the weed is not affected. The much less polar tetramethoxy derivative may, however, be absorbed and hence be able to cause toxicity. Because of the combination of phytotoxicity and antimicrobial activity, (+/-)-catechin could be a useful natural herbicide and antimicrobial.
|
Bactericidal activity against Xanthomonas euvesicatoria at 6.3 ug/ml after 24 hr by BacLight bacterial viability fluorescence assay
|
Xanthomonas euvesicatoria
|
None
|
|
Journal : J Agric Food Chem
Title : Phytotoxic and antimicrobial activities of catechin derivatives.
Year : 2004
Volume : 52
Issue : 5
First Page : 1077
Last Page : 1082
Authors : Veluri R, Weir TL, Bais HP, Stermitz FR, Vivanco JM.
Abstract : (+/-)-Catechin is a potent phytotoxin, with the phytotoxicity due entirely to the (-)-catechin enantiomer. (+)-Catechin, but not the (-)-enantiomer, has antibacterial and antifungal activities. Tetramethoxy, pentaacetoxy, and cyclic derivatives of (+/-)-catechin retained phytotoxicity. The results indicate that antioxidant properties of catechins are not a determining factor for phytotoxicity. A similar conclusion was reached for the antimicrobial properties. Centaurea maculosa (spotted knapweed) exudes (+/-)-catechin from its roots, but the flavanol is not re-absorbed and hence the weed is not affected. The much less polar tetramethoxy derivative may, however, be absorbed and hence be able to cause toxicity. Because of the combination of phytotoxicity and antimicrobial activity, (+/-)-catechin could be a useful natural herbicide and antimicrobial.
|
Antibacterial activity against Pectobacterium carotovorum after 24 hr by spectrophotometry
|
Pectobacterium carotovorum
|
1.6
ug.mL-1
|
|
Journal : J Agric Food Chem
Title : Phytotoxic and antimicrobial activities of catechin derivatives.
Year : 2004
Volume : 52
Issue : 5
First Page : 1077
Last Page : 1082
Authors : Veluri R, Weir TL, Bais HP, Stermitz FR, Vivanco JM.
Abstract : (+/-)-Catechin is a potent phytotoxin, with the phytotoxicity due entirely to the (-)-catechin enantiomer. (+)-Catechin, but not the (-)-enantiomer, has antibacterial and antifungal activities. Tetramethoxy, pentaacetoxy, and cyclic derivatives of (+/-)-catechin retained phytotoxicity. The results indicate that antioxidant properties of catechins are not a determining factor for phytotoxicity. A similar conclusion was reached for the antimicrobial properties. Centaurea maculosa (spotted knapweed) exudes (+/-)-catechin from its roots, but the flavanol is not re-absorbed and hence the weed is not affected. The much less polar tetramethoxy derivative may, however, be absorbed and hence be able to cause toxicity. Because of the combination of phytotoxicity and antimicrobial activity, (+/-)-catechin could be a useful natural herbicide and antimicrobial.
|
Antibacterial activity against Erwinia amylovora after 24 hr by spectrophotometry
|
Erwinia amylovora
|
1.6
ug.mL-1
|
|
Journal : J Agric Food Chem
Title : Phytotoxic and antimicrobial activities of catechin derivatives.
Year : 2004
Volume : 52
Issue : 5
First Page : 1077
Last Page : 1082
Authors : Veluri R, Weir TL, Bais HP, Stermitz FR, Vivanco JM.
Abstract : (+/-)-Catechin is a potent phytotoxin, with the phytotoxicity due entirely to the (-)-catechin enantiomer. (+)-Catechin, but not the (-)-enantiomer, has antibacterial and antifungal activities. Tetramethoxy, pentaacetoxy, and cyclic derivatives of (+/-)-catechin retained phytotoxicity. The results indicate that antioxidant properties of catechins are not a determining factor for phytotoxicity. A similar conclusion was reached for the antimicrobial properties. Centaurea maculosa (spotted knapweed) exudes (+/-)-catechin from its roots, but the flavanol is not re-absorbed and hence the weed is not affected. The much less polar tetramethoxy derivative may, however, be absorbed and hence be able to cause toxicity. Because of the combination of phytotoxicity and antimicrobial activity, (+/-)-catechin could be a useful natural herbicide and antimicrobial.
|
Antibacterial activity against Xanthomonas campestris pv. vesicatoria after 24 hr by spectrophotometry
|
Xanthomonas campestris
|
1.6
ug.mL-1
|
|
Journal : J Agric Food Chem
Title : Phytotoxic and antimicrobial activities of catechin derivatives.
Year : 2004
Volume : 52
Issue : 5
First Page : 1077
Last Page : 1082
Authors : Veluri R, Weir TL, Bais HP, Stermitz FR, Vivanco JM.
Abstract : (+/-)-Catechin is a potent phytotoxin, with the phytotoxicity due entirely to the (-)-catechin enantiomer. (+)-Catechin, but not the (-)-enantiomer, has antibacterial and antifungal activities. Tetramethoxy, pentaacetoxy, and cyclic derivatives of (+/-)-catechin retained phytotoxicity. The results indicate that antioxidant properties of catechins are not a determining factor for phytotoxicity. A similar conclusion was reached for the antimicrobial properties. Centaurea maculosa (spotted knapweed) exudes (+/-)-catechin from its roots, but the flavanol is not re-absorbed and hence the weed is not affected. The much less polar tetramethoxy derivative may, however, be absorbed and hence be able to cause toxicity. Because of the combination of phytotoxicity and antimicrobial activity, (+/-)-catechin could be a useful natural herbicide and antimicrobial.
|
Antibacterial activity against Pseudomonas fluorescens after 24 hr by spectrophotometry
|
Pseudomonas fluorescens
|
1.6
ug.mL-1
|
|
Journal : J Agric Food Chem
Title : Phytotoxic and antimicrobial activities of catechin derivatives.
Year : 2004
Volume : 52
Issue : 5
First Page : 1077
Last Page : 1082
Authors : Veluri R, Weir TL, Bais HP, Stermitz FR, Vivanco JM.
Abstract : (+/-)-Catechin is a potent phytotoxin, with the phytotoxicity due entirely to the (-)-catechin enantiomer. (+)-Catechin, but not the (-)-enantiomer, has antibacterial and antifungal activities. Tetramethoxy, pentaacetoxy, and cyclic derivatives of (+/-)-catechin retained phytotoxicity. The results indicate that antioxidant properties of catechins are not a determining factor for phytotoxicity. A similar conclusion was reached for the antimicrobial properties. Centaurea maculosa (spotted knapweed) exudes (+/-)-catechin from its roots, but the flavanol is not re-absorbed and hence the weed is not affected. The much less polar tetramethoxy derivative may, however, be absorbed and hence be able to cause toxicity. Because of the combination of phytotoxicity and antimicrobial activity, (+/-)-catechin could be a useful natural herbicide and antimicrobial.
