|
Effect on photosynthetic efficiency in Physalis ixocarpa intact leaves assessed as appearance of K and J-bands of K-bands at 100 to 200 uM measured 48 hr post compound application
|
Physalis ixocarpa
|
None
|
|
Journal : J Agric Food Chem
Title : Friedelane triterpenes from Celastrus vulcanicola as photosynthetic inhibitors.
Year : 2010
Volume : 58
Issue : 20
First Page : 10847
Last Page : 10854
Authors : Torres-Romero D, King-Díaz B, Strasser RJ, Jiménez IA, Lotina-Hennsen B, Bazzocchi IL.
Abstract : Five friedelane triterpenoids, epifriedelinol (1), friedelin (2), canophyllol (3), pulpononic acid (4) and 3-oxo-29-hydroxyfriedelane (5), were isolated from Celastrus vulcanicola (Celastraceae), and were identified by spectroscopic methods, comparison with authentic samples and reported data. In the search for potential herbicides, compounds 1-5 were evaluated for their photosynthetic inhibitory activity. Compound 1 acts as an energy transfer inhibitor, interacting and enhancing the light-activated Mg(2+)-ATPase, while 3 behaves as a Hill reaction inhibitor. The in vivo assays indicated that 1 and 3 act as selective postemergence herbicides at 100 μM by reducing biomass production in the weed Physalis ixocarpa. Moreover, results from Chl a fluorescence transients in leaves of Lolium perenne and P. ixocarpa suggest that both compounds affect photosynthesis efficiency of the chloroplasts as a response to a process of detoxification and repair. Thus, 1 and 3 reduce biomass by more complex mechanisms than only the damaging of the photosynthetic apparatus.
|
Effect on biomass production in Physalis ixocarpa assessed as plant dry weight at 200 uM measured 14 days post compound application relative to untreated control
|
Physalis ixocarpa
|
99.0
%
|
|
Journal : J Agric Food Chem
Title : Friedelane triterpenes from Celastrus vulcanicola as photosynthetic inhibitors.
Year : 2010
Volume : 58
Issue : 20
First Page : 10847
Last Page : 10854
Authors : Torres-Romero D, King-Díaz B, Strasser RJ, Jiménez IA, Lotina-Hennsen B, Bazzocchi IL.
Abstract : Five friedelane triterpenoids, epifriedelinol (1), friedelin (2), canophyllol (3), pulpononic acid (4) and 3-oxo-29-hydroxyfriedelane (5), were isolated from Celastrus vulcanicola (Celastraceae), and were identified by spectroscopic methods, comparison with authentic samples and reported data. In the search for potential herbicides, compounds 1-5 were evaluated for their photosynthetic inhibitory activity. Compound 1 acts as an energy transfer inhibitor, interacting and enhancing the light-activated Mg(2+)-ATPase, while 3 behaves as a Hill reaction inhibitor. The in vivo assays indicated that 1 and 3 act as selective postemergence herbicides at 100 μM by reducing biomass production in the weed Physalis ixocarpa. Moreover, results from Chl a fluorescence transients in leaves of Lolium perenne and P. ixocarpa suggest that both compounds affect photosynthesis efficiency of the chloroplasts as a response to a process of detoxification and repair. Thus, 1 and 3 reduce biomass by more complex mechanisms than only the damaging of the photosynthetic apparatus.
|
Effect on biomass production in Physalis ixocarpa assessed as plant dry weight at 100 uM measured 14 days post compound application relative to untreated control
|
Physalis ixocarpa
|
81.5
%
|
|
Journal : J Agric Food Chem
Title : Friedelane triterpenes from Celastrus vulcanicola as photosynthetic inhibitors.
Year : 2010
Volume : 58
Issue : 20
First Page : 10847
Last Page : 10854
Authors : Torres-Romero D, King-Díaz B, Strasser RJ, Jiménez IA, Lotina-Hennsen B, Bazzocchi IL.
Abstract : Five friedelane triterpenoids, epifriedelinol (1), friedelin (2), canophyllol (3), pulpononic acid (4) and 3-oxo-29-hydroxyfriedelane (5), were isolated from Celastrus vulcanicola (Celastraceae), and were identified by spectroscopic methods, comparison with authentic samples and reported data. In the search for potential herbicides, compounds 1-5 were evaluated for their photosynthetic inhibitory activity. Compound 1 acts as an energy transfer inhibitor, interacting and enhancing the light-activated Mg(2+)-ATPase, while 3 behaves as a Hill reaction inhibitor. The in vivo assays indicated that 1 and 3 act as selective postemergence herbicides at 100 μM by reducing biomass production in the weed Physalis ixocarpa. Moreover, results from Chl a fluorescence transients in leaves of Lolium perenne and P. ixocarpa suggest that both compounds affect photosynthesis efficiency of the chloroplasts as a response to a process of detoxification and repair. Thus, 1 and 3 reduce biomass by more complex mechanisms than only the damaging of the photosynthetic apparatus.
|
Effect on biomass production in Lolium perenne (perennial ryegrass) assessed as plant dry weight at 100 uM measured 14 days post compound application relative to untreated control
|
Lolium perenne
|
117.1
%
|
|
Journal : J Agric Food Chem
Title : Friedelane triterpenes from Celastrus vulcanicola as photosynthetic inhibitors.
Year : 2010
Volume : 58
Issue : 20
First Page : 10847
Last Page : 10854
Authors : Torres-Romero D, King-Díaz B, Strasser RJ, Jiménez IA, Lotina-Hennsen B, Bazzocchi IL.
Abstract : Five friedelane triterpenoids, epifriedelinol (1), friedelin (2), canophyllol (3), pulpononic acid (4) and 3-oxo-29-hydroxyfriedelane (5), were isolated from Celastrus vulcanicola (Celastraceae), and were identified by spectroscopic methods, comparison with authentic samples and reported data. In the search for potential herbicides, compounds 1-5 were evaluated for their photosynthetic inhibitory activity. Compound 1 acts as an energy transfer inhibitor, interacting and enhancing the light-activated Mg(2+)-ATPase, while 3 behaves as a Hill reaction inhibitor. The in vivo assays indicated that 1 and 3 act as selective postemergence herbicides at 100 μM by reducing biomass production in the weed Physalis ixocarpa. Moreover, results from Chl a fluorescence transients in leaves of Lolium perenne and P. ixocarpa suggest that both compounds affect photosynthesis efficiency of the chloroplasts as a response to a process of detoxification and repair. Thus, 1 and 3 reduce biomass by more complex mechanisms than only the damaging of the photosynthetic apparatus.
|
Effect on biomass production in Lolium perenne (perennial ryegrass) assessed as plant dry weight at 200 uM measured 14 days post compound application relative to untreated control
|
Lolium perenne
|
140.3
%
|
|
Journal : J Agric Food Chem
Title : Friedelane triterpenes from Celastrus vulcanicola as photosynthetic inhibitors.
Year : 2010
Volume : 58
Issue : 20
First Page : 10847
Last Page : 10854
Authors : Torres-Romero D, King-Díaz B, Strasser RJ, Jiménez IA, Lotina-Hennsen B, Bazzocchi IL.
Abstract : Five friedelane triterpenoids, epifriedelinol (1), friedelin (2), canophyllol (3), pulpononic acid (4) and 3-oxo-29-hydroxyfriedelane (5), were isolated from Celastrus vulcanicola (Celastraceae), and were identified by spectroscopic methods, comparison with authentic samples and reported data. In the search for potential herbicides, compounds 1-5 were evaluated for their photosynthetic inhibitory activity. Compound 1 acts as an energy transfer inhibitor, interacting and enhancing the light-activated Mg(2+)-ATPase, while 3 behaves as a Hill reaction inhibitor. The in vivo assays indicated that 1 and 3 act as selective postemergence herbicides at 100 μM by reducing biomass production in the weed Physalis ixocarpa. Moreover, results from Chl a fluorescence transients in leaves of Lolium perenne and P. ixocarpa suggest that both compounds affect photosynthesis efficiency of the chloroplasts as a response to a process of detoxification and repair. Thus, 1 and 3 reduce biomass by more complex mechanisms than only the damaging of the photosynthetic apparatus.
|
Effect on photosynthetic efficiency in Physalis ixocarpa intact leaves assessed as increase in PI(abs) level at 100 uM measured 72 hr post compound application
|
Physalis ixocarpa
|
10.0
%
|
|
Journal : J Agric Food Chem
Title : Friedelane triterpenes from Celastrus vulcanicola as photosynthetic inhibitors.
Year : 2010
Volume : 58
Issue : 20
First Page : 10847
Last Page : 10854
Authors : Torres-Romero D, King-Díaz B, Strasser RJ, Jiménez IA, Lotina-Hennsen B, Bazzocchi IL.
Abstract : Five friedelane triterpenoids, epifriedelinol (1), friedelin (2), canophyllol (3), pulpononic acid (4) and 3-oxo-29-hydroxyfriedelane (5), were isolated from Celastrus vulcanicola (Celastraceae), and were identified by spectroscopic methods, comparison with authentic samples and reported data. In the search for potential herbicides, compounds 1-5 were evaluated for their photosynthetic inhibitory activity. Compound 1 acts as an energy transfer inhibitor, interacting and enhancing the light-activated Mg(2+)-ATPase, while 3 behaves as a Hill reaction inhibitor. The in vivo assays indicated that 1 and 3 act as selective postemergence herbicides at 100 μM by reducing biomass production in the weed Physalis ixocarpa. Moreover, results from Chl a fluorescence transients in leaves of Lolium perenne and P. ixocarpa suggest that both compounds affect photosynthesis efficiency of the chloroplasts as a response to a process of detoxification and repair. Thus, 1 and 3 reduce biomass by more complex mechanisms than only the damaging of the photosynthetic apparatus.
|
Inhibition of photosynthetic efficiency in Physalis ixocarpa intact leaves assessed as loss of K-bands at 200 uM measured 72 hr post compound application
|
Physalis ixocarpa
|
None
|
|
Journal : J Agric Food Chem
Title : Friedelane triterpenes from Celastrus vulcanicola as photosynthetic inhibitors.
Year : 2010
Volume : 58
Issue : 20
First Page : 10847
Last Page : 10854
Authors : Torres-Romero D, King-Díaz B, Strasser RJ, Jiménez IA, Lotina-Hennsen B, Bazzocchi IL.
Abstract : Five friedelane triterpenoids, epifriedelinol (1), friedelin (2), canophyllol (3), pulpononic acid (4) and 3-oxo-29-hydroxyfriedelane (5), were isolated from Celastrus vulcanicola (Celastraceae), and were identified by spectroscopic methods, comparison with authentic samples and reported data. In the search for potential herbicides, compounds 1-5 were evaluated for their photosynthetic inhibitory activity. Compound 1 acts as an energy transfer inhibitor, interacting and enhancing the light-activated Mg(2+)-ATPase, while 3 behaves as a Hill reaction inhibitor. The in vivo assays indicated that 1 and 3 act as selective postemergence herbicides at 100 μM by reducing biomass production in the weed Physalis ixocarpa. Moreover, results from Chl a fluorescence transients in leaves of Lolium perenne and P. ixocarpa suggest that both compounds affect photosynthesis efficiency of the chloroplasts as a response to a process of detoxification and repair. Thus, 1 and 3 reduce biomass by more complex mechanisms than only the damaging of the photosynthetic apparatus.
|
Inhibition of photosynthetic efficiency in Physalis ixocarpa intact leaves assessed as reduction in PI(abs) level at 100 uM measured 72 hr post compound application
|
Physalis ixocarpa
|
25.0
%
|
|
Journal : J Agric Food Chem
Title : Friedelane triterpenes from Celastrus vulcanicola as photosynthetic inhibitors.
Year : 2010
Volume : 58
Issue : 20
First Page : 10847
Last Page : 10854
Authors : Torres-Romero D, King-Díaz B, Strasser RJ, Jiménez IA, Lotina-Hennsen B, Bazzocchi IL.
Abstract : Five friedelane triterpenoids, epifriedelinol (1), friedelin (2), canophyllol (3), pulpononic acid (4) and 3-oxo-29-hydroxyfriedelane (5), were isolated from Celastrus vulcanicola (Celastraceae), and were identified by spectroscopic methods, comparison with authentic samples and reported data. In the search for potential herbicides, compounds 1-5 were evaluated for their photosynthetic inhibitory activity. Compound 1 acts as an energy transfer inhibitor, interacting and enhancing the light-activated Mg(2+)-ATPase, while 3 behaves as a Hill reaction inhibitor. The in vivo assays indicated that 1 and 3 act as selective postemergence herbicides at 100 μM by reducing biomass production in the weed Physalis ixocarpa. Moreover, results from Chl a fluorescence transients in leaves of Lolium perenne and P. ixocarpa suggest that both compounds affect photosynthesis efficiency of the chloroplasts as a response to a process of detoxification and repair. Thus, 1 and 3 reduce biomass by more complex mechanisms than only the damaging of the photosynthetic apparatus.
|
Inhibition of photosynthetic efficiency in Physalis ixocarpa intact leaves assessed as reduction in PI(abs) level at 200 uM measured 48 hr post compound application
|
Physalis ixocarpa
|
10.0
%
|
|
Journal : J Agric Food Chem
Title : Friedelane triterpenes from Celastrus vulcanicola as photosynthetic inhibitors.
Year : 2010
Volume : 58
Issue : 20
First Page : 10847
Last Page : 10854
Authors : Torres-Romero D, King-Díaz B, Strasser RJ, Jiménez IA, Lotina-Hennsen B, Bazzocchi IL.
Abstract : Five friedelane triterpenoids, epifriedelinol (1), friedelin (2), canophyllol (3), pulpononic acid (4) and 3-oxo-29-hydroxyfriedelane (5), were isolated from Celastrus vulcanicola (Celastraceae), and were identified by spectroscopic methods, comparison with authentic samples and reported data. In the search for potential herbicides, compounds 1-5 were evaluated for their photosynthetic inhibitory activity. Compound 1 acts as an energy transfer inhibitor, interacting and enhancing the light-activated Mg(2+)-ATPase, while 3 behaves as a Hill reaction inhibitor. The in vivo assays indicated that 1 and 3 act as selective postemergence herbicides at 100 μM by reducing biomass production in the weed Physalis ixocarpa. Moreover, results from Chl a fluorescence transients in leaves of Lolium perenne and P. ixocarpa suggest that both compounds affect photosynthesis efficiency of the chloroplasts as a response to a process of detoxification and repair. Thus, 1 and 3 reduce biomass by more complex mechanisms than only the damaging of the photosynthetic apparatus.
|
Inhibition of photosynthetic efficiency in Physalis ixocarpa intact leaves assessed as reduction in PI(abs) level at 100 uM measured 48 hr post compound application
|
Physalis ixocarpa
|
10.0
%
|
|
Journal : J Agric Food Chem
Title : Friedelane triterpenes from Celastrus vulcanicola as photosynthetic inhibitors.
Year : 2010
Volume : 58
Issue : 20
First Page : 10847
Last Page : 10854
Authors : Torres-Romero D, King-Díaz B, Strasser RJ, Jiménez IA, Lotina-Hennsen B, Bazzocchi IL.
Abstract : Five friedelane triterpenoids, epifriedelinol (1), friedelin (2), canophyllol (3), pulpononic acid (4) and 3-oxo-29-hydroxyfriedelane (5), were isolated from Celastrus vulcanicola (Celastraceae), and were identified by spectroscopic methods, comparison with authentic samples and reported data. In the search for potential herbicides, compounds 1-5 were evaluated for their photosynthetic inhibitory activity. Compound 1 acts as an energy transfer inhibitor, interacting and enhancing the light-activated Mg(2+)-ATPase, while 3 behaves as a Hill reaction inhibitor. The in vivo assays indicated that 1 and 3 act as selective postemergence herbicides at 100 μM by reducing biomass production in the weed Physalis ixocarpa. Moreover, results from Chl a fluorescence transients in leaves of Lolium perenne and P. ixocarpa suggest that both compounds affect photosynthesis efficiency of the chloroplasts as a response to a process of detoxification and repair. Thus, 1 and 3 reduce biomass by more complex mechanisms than only the damaging of the photosynthetic apparatus.
|
Inhibition of photosynthetic efficiency in Physalis ixocarpa intact leaves assessed as effect on OJIP transients at 100 uM measured 24 hr post compound application
|
Physalis ixocarpa
|
None
|
|
Journal : J Agric Food Chem
Title : Friedelane triterpenes from Celastrus vulcanicola as photosynthetic inhibitors.
Year : 2010
Volume : 58
Issue : 20
First Page : 10847
Last Page : 10854
Authors : Torres-Romero D, King-Díaz B, Strasser RJ, Jiménez IA, Lotina-Hennsen B, Bazzocchi IL.
Abstract : Five friedelane triterpenoids, epifriedelinol (1), friedelin (2), canophyllol (3), pulpononic acid (4) and 3-oxo-29-hydroxyfriedelane (5), were isolated from Celastrus vulcanicola (Celastraceae), and were identified by spectroscopic methods, comparison with authentic samples and reported data. In the search for potential herbicides, compounds 1-5 were evaluated for their photosynthetic inhibitory activity. Compound 1 acts as an energy transfer inhibitor, interacting and enhancing the light-activated Mg(2+)-ATPase, while 3 behaves as a Hill reaction inhibitor. The in vivo assays indicated that 1 and 3 act as selective postemergence herbicides at 100 μM by reducing biomass production in the weed Physalis ixocarpa. Moreover, results from Chl a fluorescence transients in leaves of Lolium perenne and P. ixocarpa suggest that both compounds affect photosynthesis efficiency of the chloroplasts as a response to a process of detoxification and repair. Thus, 1 and 3 reduce biomass by more complex mechanisms than only the damaging of the photosynthetic apparatus.
|
Inhibition of photosynthetic efficiency in Lolium perenne (perennial ryegrass) at 200 uM measured 24 to 72 hr post compound application
|
Lolium perenne
|
None
|
|
Journal : J Agric Food Chem
Title : Friedelane triterpenes from Celastrus vulcanicola as photosynthetic inhibitors.
Year : 2010
Volume : 58
Issue : 20
First Page : 10847
Last Page : 10854
Authors : Torres-Romero D, King-Díaz B, Strasser RJ, Jiménez IA, Lotina-Hennsen B, Bazzocchi IL.
Abstract : Five friedelane triterpenoids, epifriedelinol (1), friedelin (2), canophyllol (3), pulpononic acid (4) and 3-oxo-29-hydroxyfriedelane (5), were isolated from Celastrus vulcanicola (Celastraceae), and were identified by spectroscopic methods, comparison with authentic samples and reported data. In the search for potential herbicides, compounds 1-5 were evaluated for their photosynthetic inhibitory activity. Compound 1 acts as an energy transfer inhibitor, interacting and enhancing the light-activated Mg(2+)-ATPase, while 3 behaves as a Hill reaction inhibitor. The in vivo assays indicated that 1 and 3 act as selective postemergence herbicides at 100 μM by reducing biomass production in the weed Physalis ixocarpa. Moreover, results from Chl a fluorescence transients in leaves of Lolium perenne and P. ixocarpa suggest that both compounds affect photosynthesis efficiency of the chloroplasts as a response to a process of detoxification and repair. Thus, 1 and 3 reduce biomass by more complex mechanisms than only the damaging of the photosynthetic apparatus.
|
Inhibition of photosynthetic efficiency in Lolium perenne (perennial ryegrass) at 100 uM measured 72 hr post compound application
|
Lolium perenne
|
15.0
%
|
|
Journal : J Agric Food Chem
Title : Friedelane triterpenes from Celastrus vulcanicola as photosynthetic inhibitors.
Year : 2010
Volume : 58
Issue : 20
First Page : 10847
Last Page : 10854
Authors : Torres-Romero D, King-Díaz B, Strasser RJ, Jiménez IA, Lotina-Hennsen B, Bazzocchi IL.
Abstract : Five friedelane triterpenoids, epifriedelinol (1), friedelin (2), canophyllol (3), pulpononic acid (4) and 3-oxo-29-hydroxyfriedelane (5), were isolated from Celastrus vulcanicola (Celastraceae), and were identified by spectroscopic methods, comparison with authentic samples and reported data. In the search for potential herbicides, compounds 1-5 were evaluated for their photosynthetic inhibitory activity. Compound 1 acts as an energy transfer inhibitor, interacting and enhancing the light-activated Mg(2+)-ATPase, while 3 behaves as a Hill reaction inhibitor. The in vivo assays indicated that 1 and 3 act as selective postemergence herbicides at 100 μM by reducing biomass production in the weed Physalis ixocarpa. Moreover, results from Chl a fluorescence transients in leaves of Lolium perenne and P. ixocarpa suggest that both compounds affect photosynthesis efficiency of the chloroplasts as a response to a process of detoxification and repair. Thus, 1 and 3 reduce biomass by more complex mechanisms than only the damaging of the photosynthetic apparatus.
|
Inhibition of photosynthetic efficiency in Lolium perenne (perennial ryegrass) at 100 uM measured 24 hr post compound application
|
Lolium perenne
|
50.0
%
|
|
Journal : J Agric Food Chem
Title : Friedelane triterpenes from Celastrus vulcanicola as photosynthetic inhibitors.
Year : 2010
Volume : 58
Issue : 20
First Page : 10847
Last Page : 10854
Authors : Torres-Romero D, King-Díaz B, Strasser RJ, Jiménez IA, Lotina-Hennsen B, Bazzocchi IL.
Abstract : Five friedelane triterpenoids, epifriedelinol (1), friedelin (2), canophyllol (3), pulpononic acid (4) and 3-oxo-29-hydroxyfriedelane (5), were isolated from Celastrus vulcanicola (Celastraceae), and were identified by spectroscopic methods, comparison with authentic samples and reported data. In the search for potential herbicides, compounds 1-5 were evaluated for their photosynthetic inhibitory activity. Compound 1 acts as an energy transfer inhibitor, interacting and enhancing the light-activated Mg(2+)-ATPase, while 3 behaves as a Hill reaction inhibitor. The in vivo assays indicated that 1 and 3 act as selective postemergence herbicides at 100 μM by reducing biomass production in the weed Physalis ixocarpa. Moreover, results from Chl a fluorescence transients in leaves of Lolium perenne and P. ixocarpa suggest that both compounds affect photosynthesis efficiency of the chloroplasts as a response to a process of detoxification and repair. Thus, 1 and 3 reduce biomass by more complex mechanisms than only the damaging of the photosynthetic apparatus.
|
Inhibition of photosynthetic efficiency in Lolium perenne (perennial ryegrass) at 100 uM measured 48 hr post compound application
|
Lolium perenne
|
None
|
|
Journal : J Agric Food Chem
Title : Friedelane triterpenes from Celastrus vulcanicola as photosynthetic inhibitors.
Year : 2010
Volume : 58
Issue : 20
First Page : 10847
Last Page : 10854
Authors : Torres-Romero D, King-Díaz B, Strasser RJ, Jiménez IA, Lotina-Hennsen B, Bazzocchi IL.
Abstract : Five friedelane triterpenoids, epifriedelinol (1), friedelin (2), canophyllol (3), pulpononic acid (4) and 3-oxo-29-hydroxyfriedelane (5), were isolated from Celastrus vulcanicola (Celastraceae), and were identified by spectroscopic methods, comparison with authentic samples and reported data. In the search for potential herbicides, compounds 1-5 were evaluated for their photosynthetic inhibitory activity. Compound 1 acts as an energy transfer inhibitor, interacting and enhancing the light-activated Mg(2+)-ATPase, while 3 behaves as a Hill reaction inhibitor. The in vivo assays indicated that 1 and 3 act as selective postemergence herbicides at 100 μM by reducing biomass production in the weed Physalis ixocarpa. Moreover, results from Chl a fluorescence transients in leaves of Lolium perenne and P. ixocarpa suggest that both compounds affect photosynthesis efficiency of the chloroplasts as a response to a process of detoxification and repair. Thus, 1 and 3 reduce biomass by more complex mechanisms than only the damaging of the photosynthetic apparatus.
|
Effect on photosynthesis efficiency in Spinacia oleracea (spinach) leaves freshly lysed chloroplasts assessed as change in chlorophyll a fluorescence at 150 to 450 uM
|
Spinacia oleracea
|
None
|
|
Journal : J Agric Food Chem
Title : Friedelane triterpenes from Celastrus vulcanicola as photosynthetic inhibitors.
Year : 2010
Volume : 58
Issue : 20
First Page : 10847
Last Page : 10854
Authors : Torres-Romero D, King-Díaz B, Strasser RJ, Jiménez IA, Lotina-Hennsen B, Bazzocchi IL.
Abstract : Five friedelane triterpenoids, epifriedelinol (1), friedelin (2), canophyllol (3), pulpononic acid (4) and 3-oxo-29-hydroxyfriedelane (5), were isolated from Celastrus vulcanicola (Celastraceae), and were identified by spectroscopic methods, comparison with authentic samples and reported data. In the search for potential herbicides, compounds 1-5 were evaluated for their photosynthetic inhibitory activity. Compound 1 acts as an energy transfer inhibitor, interacting and enhancing the light-activated Mg(2+)-ATPase, while 3 behaves as a Hill reaction inhibitor. The in vivo assays indicated that 1 and 3 act as selective postemergence herbicides at 100 μM by reducing biomass production in the weed Physalis ixocarpa. Moreover, results from Chl a fluorescence transients in leaves of Lolium perenne and P. ixocarpa suggest that both compounds affect photosynthesis efficiency of the chloroplasts as a response to a process of detoxification and repair. Thus, 1 and 3 reduce biomass by more complex mechanisms than only the damaging of the photosynthetic apparatus.
|
Inhibition of uncoupled photosystem II electron transport and partial reactions in Spinacia oleracea (spinach) leaves assessed as electron transport rate from water to DCPIP at 300 uM measured per mg of chlorophyll relative to untreated control
|
Spinacia oleracea
|
100.0
%
|
|
Journal : J Agric Food Chem
Title : Friedelane triterpenes from Celastrus vulcanicola as photosynthetic inhibitors.
Year : 2010
Volume : 58
Issue : 20
First Page : 10847
Last Page : 10854
Authors : Torres-Romero D, King-Díaz B, Strasser RJ, Jiménez IA, Lotina-Hennsen B, Bazzocchi IL.
Abstract : Five friedelane triterpenoids, epifriedelinol (1), friedelin (2), canophyllol (3), pulpononic acid (4) and 3-oxo-29-hydroxyfriedelane (5), were isolated from Celastrus vulcanicola (Celastraceae), and were identified by spectroscopic methods, comparison with authentic samples and reported data. In the search for potential herbicides, compounds 1-5 were evaluated for their photosynthetic inhibitory activity. Compound 1 acts as an energy transfer inhibitor, interacting and enhancing the light-activated Mg(2+)-ATPase, while 3 behaves as a Hill reaction inhibitor. The in vivo assays indicated that 1 and 3 act as selective postemergence herbicides at 100 μM by reducing biomass production in the weed Physalis ixocarpa. Moreover, results from Chl a fluorescence transients in leaves of Lolium perenne and P. ixocarpa suggest that both compounds affect photosynthesis efficiency of the chloroplasts as a response to a process of detoxification and repair. Thus, 1 and 3 reduce biomass by more complex mechanisms than only the damaging of the photosynthetic apparatus.
|
Inhibition of uncoupled photosystem II electron transport and partial reactions in Spinacia oleracea (spinach) leaves assessed as electron transport rate from water to DCPIP at 200 uM measured per mg of chlorophyll relative to untreated control
|
Spinacia oleracea
|
95.0
%
|
|
Journal : J Agric Food Chem
Title : Friedelane triterpenes from Celastrus vulcanicola as photosynthetic inhibitors.
Year : 2010
Volume : 58
Issue : 20
First Page : 10847
Last Page : 10854
Authors : Torres-Romero D, King-Díaz B, Strasser RJ, Jiménez IA, Lotina-Hennsen B, Bazzocchi IL.
Abstract : Five friedelane triterpenoids, epifriedelinol (1), friedelin (2), canophyllol (3), pulpononic acid (4) and 3-oxo-29-hydroxyfriedelane (5), were isolated from Celastrus vulcanicola (Celastraceae), and were identified by spectroscopic methods, comparison with authentic samples and reported data. In the search for potential herbicides, compounds 1-5 were evaluated for their photosynthetic inhibitory activity. Compound 1 acts as an energy transfer inhibitor, interacting and enhancing the light-activated Mg(2+)-ATPase, while 3 behaves as a Hill reaction inhibitor. The in vivo assays indicated that 1 and 3 act as selective postemergence herbicides at 100 μM by reducing biomass production in the weed Physalis ixocarpa. Moreover, results from Chl a fluorescence transients in leaves of Lolium perenne and P. ixocarpa suggest that both compounds affect photosynthesis efficiency of the chloroplasts as a response to a process of detoxification and repair. Thus, 1 and 3 reduce biomass by more complex mechanisms than only the damaging of the photosynthetic apparatus.
|
Inhibition of uncoupled photosystem II electron transport and partial reactions in Spinacia oleracea (spinach) leaves assessed as electron transport rate from water to DCPIP at 100 uM measured per mg of chlorophyll relative to untreated control
|
Spinacia oleracea
|
108.0
%
|
|
Journal : J Agric Food Chem
Title : Friedelane triterpenes from Celastrus vulcanicola as photosynthetic inhibitors.
Year : 2010
Volume : 58
Issue : 20
First Page : 10847
Last Page : 10854
Authors : Torres-Romero D, King-Díaz B, Strasser RJ, Jiménez IA, Lotina-Hennsen B, Bazzocchi IL.
Abstract : Five friedelane triterpenoids, epifriedelinol (1), friedelin (2), canophyllol (3), pulpononic acid (4) and 3-oxo-29-hydroxyfriedelane (5), were isolated from Celastrus vulcanicola (Celastraceae), and were identified by spectroscopic methods, comparison with authentic samples and reported data. In the search for potential herbicides, compounds 1-5 were evaluated for their photosynthetic inhibitory activity. Compound 1 acts as an energy transfer inhibitor, interacting and enhancing the light-activated Mg(2+)-ATPase, while 3 behaves as a Hill reaction inhibitor. The in vivo assays indicated that 1 and 3 act as selective postemergence herbicides at 100 μM by reducing biomass production in the weed Physalis ixocarpa. Moreover, results from Chl a fluorescence transients in leaves of Lolium perenne and P. ixocarpa suggest that both compounds affect photosynthesis efficiency of the chloroplasts as a response to a process of detoxification and repair. Thus, 1 and 3 reduce biomass by more complex mechanisms than only the damaging of the photosynthetic apparatus.
|
Inhibition of uncoupled photosystem II electron transport and partial reactions in Spinacia oleracea (spinach) leaves assessed as electron transport rate from water to SiMo at 300 uM measured per mg of chlorophyll relative to untreated control
|
Spinacia oleracea
|
0.0
%
|
|
Journal : J Agric Food Chem
Title : Friedelane triterpenes from Celastrus vulcanicola as photosynthetic inhibitors.
Year : 2010
Volume : 58
Issue : 20
First Page : 10847
Last Page : 10854
Authors : Torres-Romero D, King-Díaz B, Strasser RJ, Jiménez IA, Lotina-Hennsen B, Bazzocchi IL.
Abstract : Five friedelane triterpenoids, epifriedelinol (1), friedelin (2), canophyllol (3), pulpononic acid (4) and 3-oxo-29-hydroxyfriedelane (5), were isolated from Celastrus vulcanicola (Celastraceae), and were identified by spectroscopic methods, comparison with authentic samples and reported data. In the search for potential herbicides, compounds 1-5 were evaluated for their photosynthetic inhibitory activity. Compound 1 acts as an energy transfer inhibitor, interacting and enhancing the light-activated Mg(2+)-ATPase, while 3 behaves as a Hill reaction inhibitor. The in vivo assays indicated that 1 and 3 act as selective postemergence herbicides at 100 μM by reducing biomass production in the weed Physalis ixocarpa. Moreover, results from Chl a fluorescence transients in leaves of Lolium perenne and P. ixocarpa suggest that both compounds affect photosynthesis efficiency of the chloroplasts as a response to a process of detoxification and repair. Thus, 1 and 3 reduce biomass by more complex mechanisms than only the damaging of the photosynthetic apparatus.
|
Inhibition of uncoupled photosystem II electron transport and partial reactions in Spinacia oleracea (spinach) leaves assessed as electron transport rate from water to SiMo at 200 uM measured per mg of chlorophyll relative to untreated control
|
Spinacia oleracea
|
100.0
%
|
|
Journal : J Agric Food Chem
Title : Friedelane triterpenes from Celastrus vulcanicola as photosynthetic inhibitors.
Year : 2010
Volume : 58
Issue : 20
First Page : 10847
Last Page : 10854
Authors : Torres-Romero D, King-Díaz B, Strasser RJ, Jiménez IA, Lotina-Hennsen B, Bazzocchi IL.
Abstract : Five friedelane triterpenoids, epifriedelinol (1), friedelin (2), canophyllol (3), pulpononic acid (4) and 3-oxo-29-hydroxyfriedelane (5), were isolated from Celastrus vulcanicola (Celastraceae), and were identified by spectroscopic methods, comparison with authentic samples and reported data. In the search for potential herbicides, compounds 1-5 were evaluated for their photosynthetic inhibitory activity. Compound 1 acts as an energy transfer inhibitor, interacting and enhancing the light-activated Mg(2+)-ATPase, while 3 behaves as a Hill reaction inhibitor. The in vivo assays indicated that 1 and 3 act as selective postemergence herbicides at 100 μM by reducing biomass production in the weed Physalis ixocarpa. Moreover, results from Chl a fluorescence transients in leaves of Lolium perenne and P. ixocarpa suggest that both compounds affect photosynthesis efficiency of the chloroplasts as a response to a process of detoxification and repair. Thus, 1 and 3 reduce biomass by more complex mechanisms than only the damaging of the photosynthetic apparatus.
|
Inhibition of uncoupled photosystem II electron transport and partial reactions in Spinacia oleracea (spinach) leaves assessed as electron transport rate from water to SiMo at 100 uM measured per mg of chlorophyll relative to untreated control
|
Spinacia oleracea
|
20.0
%
|
|
Journal : J Agric Food Chem
Title : Friedelane triterpenes from Celastrus vulcanicola as photosynthetic inhibitors.
Year : 2010
Volume : 58
Issue : 20
First Page : 10847
Last Page : 10854
Authors : Torres-Romero D, King-Díaz B, Strasser RJ, Jiménez IA, Lotina-Hennsen B, Bazzocchi IL.
Abstract : Five friedelane triterpenoids, epifriedelinol (1), friedelin (2), canophyllol (3), pulpononic acid (4) and 3-oxo-29-hydroxyfriedelane (5), were isolated from Celastrus vulcanicola (Celastraceae), and were identified by spectroscopic methods, comparison with authentic samples and reported data. In the search for potential herbicides, compounds 1-5 were evaluated for their photosynthetic inhibitory activity. Compound 1 acts as an energy transfer inhibitor, interacting and enhancing the light-activated Mg(2+)-ATPase, while 3 behaves as a Hill reaction inhibitor. The in vivo assays indicated that 1 and 3 act as selective postemergence herbicides at 100 μM by reducing biomass production in the weed Physalis ixocarpa. Moreover, results from Chl a fluorescence transients in leaves of Lolium perenne and P. ixocarpa suggest that both compounds affect photosynthesis efficiency of the chloroplasts as a response to a process of detoxification and repair. Thus, 1 and 3 reduce biomass by more complex mechanisms than only the damaging of the photosynthetic apparatus.
|
Inhibition of uncoupled photosystem II electron transport and partial reactions in Spinacia oleracea (spinach) leaves assessed as electron transport rate from water to DCBQ at 300 uM measured per mg of chlorophyll relative to untreated control
|
Spinacia oleracea
|
44.0
%
|
|
Journal : J Agric Food Chem
Title : Friedelane triterpenes from Celastrus vulcanicola as photosynthetic inhibitors.
Year : 2010
Volume : 58
Issue : 20
First Page : 10847
Last Page : 10854
Authors : Torres-Romero D, King-Díaz B, Strasser RJ, Jiménez IA, Lotina-Hennsen B, Bazzocchi IL.
Abstract : Five friedelane triterpenoids, epifriedelinol (1), friedelin (2), canophyllol (3), pulpononic acid (4) and 3-oxo-29-hydroxyfriedelane (5), were isolated from Celastrus vulcanicola (Celastraceae), and were identified by spectroscopic methods, comparison with authentic samples and reported data. In the search for potential herbicides, compounds 1-5 were evaluated for their photosynthetic inhibitory activity. Compound 1 acts as an energy transfer inhibitor, interacting and enhancing the light-activated Mg(2+)-ATPase, while 3 behaves as a Hill reaction inhibitor. The in vivo assays indicated that 1 and 3 act as selective postemergence herbicides at 100 μM by reducing biomass production in the weed Physalis ixocarpa. Moreover, results from Chl a fluorescence transients in leaves of Lolium perenne and P. ixocarpa suggest that both compounds affect photosynthesis efficiency of the chloroplasts as a response to a process of detoxification and repair. Thus, 1 and 3 reduce biomass by more complex mechanisms than only the damaging of the photosynthetic apparatus.
|
Inhibition of uncoupled photosystem II electron transport and partial reactions in Spinacia oleracea (spinach) leaves assessed as electron transport rate from water to DCBQ at 200 uM measured per mg of chlorophyll relative to untreated control
|
Spinacia oleracea
|
50.0
%
|
|
Journal : J Agric Food Chem
Title : Friedelane triterpenes from Celastrus vulcanicola as photosynthetic inhibitors.
Year : 2010
Volume : 58
Issue : 20
First Page : 10847
Last Page : 10854
Authors : Torres-Romero D, King-Díaz B, Strasser RJ, Jiménez IA, Lotina-Hennsen B, Bazzocchi IL.
Abstract : Five friedelane triterpenoids, epifriedelinol (1), friedelin (2), canophyllol (3), pulpononic acid (4) and 3-oxo-29-hydroxyfriedelane (5), were isolated from Celastrus vulcanicola (Celastraceae), and were identified by spectroscopic methods, comparison with authentic samples and reported data. In the search for potential herbicides, compounds 1-5 were evaluated for their photosynthetic inhibitory activity. Compound 1 acts as an energy transfer inhibitor, interacting and enhancing the light-activated Mg(2+)-ATPase, while 3 behaves as a Hill reaction inhibitor. The in vivo assays indicated that 1 and 3 act as selective postemergence herbicides at 100 μM by reducing biomass production in the weed Physalis ixocarpa. Moreover, results from Chl a fluorescence transients in leaves of Lolium perenne and P. ixocarpa suggest that both compounds affect photosynthesis efficiency of the chloroplasts as a response to a process of detoxification and repair. Thus, 1 and 3 reduce biomass by more complex mechanisms than only the damaging of the photosynthetic apparatus.
|
Inhibition of uncoupled photosystem II electron transport and partial reactions in Spinacia oleracea (spinach) leaves assessed as electron transport rate from water to DCBQ at 100 uM measured per mg of chlorophyll relative to untreated control
|
Spinacia oleracea
|
68.0
%
|
|
Journal : J Agric Food Chem
Title : Friedelane triterpenes from Celastrus vulcanicola as photosynthetic inhibitors.
Year : 2010
Volume : 58
Issue : 20
First Page : 10847
Last Page : 10854
Authors : Torres-Romero D, King-Díaz B, Strasser RJ, Jiménez IA, Lotina-Hennsen B, Bazzocchi IL.
Abstract : Five friedelane triterpenoids, epifriedelinol (1), friedelin (2), canophyllol (3), pulpononic acid (4) and 3-oxo-29-hydroxyfriedelane (5), were isolated from Celastrus vulcanicola (Celastraceae), and were identified by spectroscopic methods, comparison with authentic samples and reported data. In the search for potential herbicides, compounds 1-5 were evaluated for their photosynthetic inhibitory activity. Compound 1 acts as an energy transfer inhibitor, interacting and enhancing the light-activated Mg(2+)-ATPase, while 3 behaves as a Hill reaction inhibitor. The in vivo assays indicated that 1 and 3 act as selective postemergence herbicides at 100 μM by reducing biomass production in the weed Physalis ixocarpa. Moreover, results from Chl a fluorescence transients in leaves of Lolium perenne and P. ixocarpa suggest that both compounds affect photosynthesis efficiency of the chloroplasts as a response to a process of detoxification and repair. Thus, 1 and 3 reduce biomass by more complex mechanisms than only the damaging of the photosynthetic apparatus.
|
Inhibition of uncoupled photosystem II electron transport and partial reactions in Spinacia oleracea (spinach) leaves assessed as electron transport rate from water to DCPIP at 50 uM measured per mg of chlorophyll relative to untreated control
|
Spinacia oleracea
|
105.0
%
|
|
Journal : J Agric Food Chem
Title : Friedelane triterpenes from Celastrus vulcanicola as photosynthetic inhibitors.
Year : 2010
Volume : 58
Issue : 20
First Page : 10847
Last Page : 10854
Authors : Torres-Romero D, King-Díaz B, Strasser RJ, Jiménez IA, Lotina-Hennsen B, Bazzocchi IL.
Abstract : Five friedelane triterpenoids, epifriedelinol (1), friedelin (2), canophyllol (3), pulpononic acid (4) and 3-oxo-29-hydroxyfriedelane (5), were isolated from Celastrus vulcanicola (Celastraceae), and were identified by spectroscopic methods, comparison with authentic samples and reported data. In the search for potential herbicides, compounds 1-5 were evaluated for their photosynthetic inhibitory activity. Compound 1 acts as an energy transfer inhibitor, interacting and enhancing the light-activated Mg(2+)-ATPase, while 3 behaves as a Hill reaction inhibitor. The in vivo assays indicated that 1 and 3 act as selective postemergence herbicides at 100 μM by reducing biomass production in the weed Physalis ixocarpa. Moreover, results from Chl a fluorescence transients in leaves of Lolium perenne and P. ixocarpa suggest that both compounds affect photosynthesis efficiency of the chloroplasts as a response to a process of detoxification and repair. Thus, 1 and 3 reduce biomass by more complex mechanisms than only the damaging of the photosynthetic apparatus.
|
Inhibition of uncoupled photosystem II electron transport and partial reactions in Spinacia oleracea (spinach) leaves assessed as electron transport rate from water to SiMo at 50 uM measured per mg of chlorophyll relative to untreated control
|
Spinacia oleracea
|
60.0
%
|
|
Journal : J Agric Food Chem
Title : Friedelane triterpenes from Celastrus vulcanicola as photosynthetic inhibitors.
Year : 2010
Volume : 58
Issue : 20
First Page : 10847
Last Page : 10854
Authors : Torres-Romero D, King-Díaz B, Strasser RJ, Jiménez IA, Lotina-Hennsen B, Bazzocchi IL.
Abstract : Five friedelane triterpenoids, epifriedelinol (1), friedelin (2), canophyllol (3), pulpononic acid (4) and 3-oxo-29-hydroxyfriedelane (5), were isolated from Celastrus vulcanicola (Celastraceae), and were identified by spectroscopic methods, comparison with authentic samples and reported data. In the search for potential herbicides, compounds 1-5 were evaluated for their photosynthetic inhibitory activity. Compound 1 acts as an energy transfer inhibitor, interacting and enhancing the light-activated Mg(2+)-ATPase, while 3 behaves as a Hill reaction inhibitor. The in vivo assays indicated that 1 and 3 act as selective postemergence herbicides at 100 μM by reducing biomass production in the weed Physalis ixocarpa. Moreover, results from Chl a fluorescence transients in leaves of Lolium perenne and P. ixocarpa suggest that both compounds affect photosynthesis efficiency of the chloroplasts as a response to a process of detoxification and repair. Thus, 1 and 3 reduce biomass by more complex mechanisms than only the damaging of the photosynthetic apparatus.
|
Increase in Magnesium-transporting ATPase activity in Spinacia oleracea (spinach) leaves chloroplasts thylakoids at 200 uM
|
Spinacia oleracea
|
116.0
%
|
|
Journal : J Agric Food Chem
Title : Friedelane triterpenes from Celastrus vulcanicola as photosynthetic inhibitors.
Year : 2010
Volume : 58
Issue : 20
First Page : 10847
Last Page : 10854
Authors : Torres-Romero D, King-Díaz B, Strasser RJ, Jiménez IA, Lotina-Hennsen B, Bazzocchi IL.
Abstract : Five friedelane triterpenoids, epifriedelinol (1), friedelin (2), canophyllol (3), pulpononic acid (4) and 3-oxo-29-hydroxyfriedelane (5), were isolated from Celastrus vulcanicola (Celastraceae), and were identified by spectroscopic methods, comparison with authentic samples and reported data. In the search for potential herbicides, compounds 1-5 were evaluated for their photosynthetic inhibitory activity. Compound 1 acts as an energy transfer inhibitor, interacting and enhancing the light-activated Mg(2+)-ATPase, while 3 behaves as a Hill reaction inhibitor. The in vivo assays indicated that 1 and 3 act as selective postemergence herbicides at 100 μM by reducing biomass production in the weed Physalis ixocarpa. Moreover, results from Chl a fluorescence transients in leaves of Lolium perenne and P. ixocarpa suggest that both compounds affect photosynthesis efficiency of the chloroplasts as a response to a process of detoxification and repair. Thus, 1 and 3 reduce biomass by more complex mechanisms than only the damaging of the photosynthetic apparatus.
|
Increase in Magnesium-transporting ATPase activity in Spinacia oleracea (spinach) leaves chloroplasts thylakoids at 300 uM
|
Spinacia oleracea
|
126.0
%
|
|
Journal : J Agric Food Chem
Title : Friedelane triterpenes from Celastrus vulcanicola as photosynthetic inhibitors.
Year : 2010
Volume : 58
Issue : 20
First Page : 10847
Last Page : 10854
Authors : Torres-Romero D, King-Díaz B, Strasser RJ, Jiménez IA, Lotina-Hennsen B, Bazzocchi IL.
Abstract : Five friedelane triterpenoids, epifriedelinol (1), friedelin (2), canophyllol (3), pulpononic acid (4) and 3-oxo-29-hydroxyfriedelane (5), were isolated from Celastrus vulcanicola (Celastraceae), and were identified by spectroscopic methods, comparison with authentic samples and reported data. In the search for potential herbicides, compounds 1-5 were evaluated for their photosynthetic inhibitory activity. Compound 1 acts as an energy transfer inhibitor, interacting and enhancing the light-activated Mg(2+)-ATPase, while 3 behaves as a Hill reaction inhibitor. The in vivo assays indicated that 1 and 3 act as selective postemergence herbicides at 100 μM by reducing biomass production in the weed Physalis ixocarpa. Moreover, results from Chl a fluorescence transients in leaves of Lolium perenne and P. ixocarpa suggest that both compounds affect photosynthesis efficiency of the chloroplasts as a response to a process of detoxification and repair. Thus, 1 and 3 reduce biomass by more complex mechanisms than only the damaging of the photosynthetic apparatus.
|
Inhibition of uncoupled photosystem II electron transport and partial reactions in Spinacia oleracea (spinach) leaves assessed as electron transport rate from water to DCBQ at 50 uM measured per mg of chlorophyll relative to untreated control
|
Spinacia oleracea
|
89.0
%
|
|
Journal : J Agric Food Chem
Title : Friedelane triterpenes from Celastrus vulcanicola as photosynthetic inhibitors.
Year : 2010
Volume : 58
Issue : 20
First Page : 10847
Last Page : 10854
Authors : Torres-Romero D, King-Díaz B, Strasser RJ, Jiménez IA, Lotina-Hennsen B, Bazzocchi IL.
Abstract : Five friedelane triterpenoids, epifriedelinol (1), friedelin (2), canophyllol (3), pulpononic acid (4) and 3-oxo-29-hydroxyfriedelane (5), were isolated from Celastrus vulcanicola (Celastraceae), and were identified by spectroscopic methods, comparison with authentic samples and reported data. In the search for potential herbicides, compounds 1-5 were evaluated for their photosynthetic inhibitory activity. Compound 1 acts as an energy transfer inhibitor, interacting and enhancing the light-activated Mg(2+)-ATPase, while 3 behaves as a Hill reaction inhibitor. The in vivo assays indicated that 1 and 3 act as selective postemergence herbicides at 100 μM by reducing biomass production in the weed Physalis ixocarpa. Moreover, results from Chl a fluorescence transients in leaves of Lolium perenne and P. ixocarpa suggest that both compounds affect photosynthesis efficiency of the chloroplasts as a response to a process of detoxification and repair. Thus, 1 and 3 reduce biomass by more complex mechanisms than only the damaging of the photosynthetic apparatus.
|
Inhibition of basal electron transport from water to MV in Spinacia oleracea (spinach) leaves chloroplasts up to 300 uM using Clark type electrode system based method
|
Spinacia oleracea
|
None
|
|
Journal : J Agric Food Chem
Title : Friedelane triterpenes from Celastrus vulcanicola as photosynthetic inhibitors.
Year : 2010
Volume : 58
Issue : 20
First Page : 10847
Last Page : 10854
Authors : Torres-Romero D, King-Díaz B, Strasser RJ, Jiménez IA, Lotina-Hennsen B, Bazzocchi IL.
Abstract : Five friedelane triterpenoids, epifriedelinol (1), friedelin (2), canophyllol (3), pulpononic acid (4) and 3-oxo-29-hydroxyfriedelane (5), were isolated from Celastrus vulcanicola (Celastraceae), and were identified by spectroscopic methods, comparison with authentic samples and reported data. In the search for potential herbicides, compounds 1-5 were evaluated for their photosynthetic inhibitory activity. Compound 1 acts as an energy transfer inhibitor, interacting and enhancing the light-activated Mg(2+)-ATPase, while 3 behaves as a Hill reaction inhibitor. The in vivo assays indicated that 1 and 3 act as selective postemergence herbicides at 100 μM by reducing biomass production in the weed Physalis ixocarpa. Moreover, results from Chl a fluorescence transients in leaves of Lolium perenne and P. ixocarpa suggest that both compounds affect photosynthesis efficiency of the chloroplasts as a response to a process of detoxification and repair. Thus, 1 and 3 reduce biomass by more complex mechanisms than only the damaging of the photosynthetic apparatus.
|
Inhibition of uncoupled electron transport from water to MV in Spinacia oleracea (spinach) leaves chloroplasts up to 300 uM using Clark type electrode system based method
|
Spinacia oleracea
|
None
|
|
Journal : J Agric Food Chem
Title : Friedelane triterpenes from Celastrus vulcanicola as photosynthetic inhibitors.
Year : 2010
Volume : 58
Issue : 20
First Page : 10847
Last Page : 10854
Authors : Torres-Romero D, King-Díaz B, Strasser RJ, Jiménez IA, Lotina-Hennsen B, Bazzocchi IL.
Abstract : Five friedelane triterpenoids, epifriedelinol (1), friedelin (2), canophyllol (3), pulpononic acid (4) and 3-oxo-29-hydroxyfriedelane (5), were isolated from Celastrus vulcanicola (Celastraceae), and were identified by spectroscopic methods, comparison with authentic samples and reported data. In the search for potential herbicides, compounds 1-5 were evaluated for their photosynthetic inhibitory activity. Compound 1 acts as an energy transfer inhibitor, interacting and enhancing the light-activated Mg(2+)-ATPase, while 3 behaves as a Hill reaction inhibitor. The in vivo assays indicated that 1 and 3 act as selective postemergence herbicides at 100 μM by reducing biomass production in the weed Physalis ixocarpa. Moreover, results from Chl a fluorescence transients in leaves of Lolium perenne and P. ixocarpa suggest that both compounds affect photosynthesis efficiency of the chloroplasts as a response to a process of detoxification and repair. Thus, 1 and 3 reduce biomass by more complex mechanisms than only the damaging of the photosynthetic apparatus.
|
Inhibition of phosphorylating noncyclic electron transport from water to MV in Spinacia oleracea (spinach) leaves chloroplasts up to 300 uM using Clark type electrode system based method
|
Spinacia oleracea
|
None
|
|
Journal : J Agric Food Chem
Title : Friedelane triterpenes from Celastrus vulcanicola as photosynthetic inhibitors.
Year : 2010
Volume : 58
Issue : 20
First Page : 10847
Last Page : 10854
Authors : Torres-Romero D, King-Díaz B, Strasser RJ, Jiménez IA, Lotina-Hennsen B, Bazzocchi IL.
Abstract : Five friedelane triterpenoids, epifriedelinol (1), friedelin (2), canophyllol (3), pulpononic acid (4) and 3-oxo-29-hydroxyfriedelane (5), were isolated from Celastrus vulcanicola (Celastraceae), and were identified by spectroscopic methods, comparison with authentic samples and reported data. In the search for potential herbicides, compounds 1-5 were evaluated for their photosynthetic inhibitory activity. Compound 1 acts as an energy transfer inhibitor, interacting and enhancing the light-activated Mg(2+)-ATPase, while 3 behaves as a Hill reaction inhibitor. The in vivo assays indicated that 1 and 3 act as selective postemergence herbicides at 100 μM by reducing biomass production in the weed Physalis ixocarpa. Moreover, results from Chl a fluorescence transients in leaves of Lolium perenne and P. ixocarpa suggest that both compounds affect photosynthesis efficiency of the chloroplasts as a response to a process of detoxification and repair. Thus, 1 and 3 reduce biomass by more complex mechanisms than only the damaging of the photosynthetic apparatus.
|
Inhibition of photophosphorylation in Spinacia oleracea (spinach) leaves chloroplasts by titrimetry
|
Spinacia oleracea
|
124000.0
nM
|
|
Inhibition of photophosphorylation in Spinacia oleracea (spinach) leaves chloroplasts by titrimetry
|
Spinacia oleracea
|
None
|
|
Journal : J Agric Food Chem
Title : Friedelane triterpenes from Celastrus vulcanicola as photosynthetic inhibitors.
Year : 2010
Volume : 58
Issue : 20
First Page : 10847
Last Page : 10854
Authors : Torres-Romero D, King-Díaz B, Strasser RJ, Jiménez IA, Lotina-Hennsen B, Bazzocchi IL.
Abstract : Five friedelane triterpenoids, epifriedelinol (1), friedelin (2), canophyllol (3), pulpononic acid (4) and 3-oxo-29-hydroxyfriedelane (5), were isolated from Celastrus vulcanicola (Celastraceae), and were identified by spectroscopic methods, comparison with authentic samples and reported data. In the search for potential herbicides, compounds 1-5 were evaluated for their photosynthetic inhibitory activity. Compound 1 acts as an energy transfer inhibitor, interacting and enhancing the light-activated Mg(2+)-ATPase, while 3 behaves as a Hill reaction inhibitor. The in vivo assays indicated that 1 and 3 act as selective postemergence herbicides at 100 μM by reducing biomass production in the weed Physalis ixocarpa. Moreover, results from Chl a fluorescence transients in leaves of Lolium perenne and P. ixocarpa suggest that both compounds affect photosynthesis efficiency of the chloroplasts as a response to a process of detoxification and repair. Thus, 1 and 3 reduce biomass by more complex mechanisms than only the damaging of the photosynthetic apparatus.
|
Increase in Magnesium-transporting ATPase activity in Spinacia oleracea (spinach) leaves chloroplasts thylakoids at 100 uM
|
Spinacia oleracea
|
110.0
%
|
|
Journal : J Agric Food Chem
Title : Friedelane triterpenes from Celastrus vulcanicola as photosynthetic inhibitors.
Year : 2010
Volume : 58
Issue : 20
First Page : 10847
Last Page : 10854
Authors : Torres-Romero D, King-Díaz B, Strasser RJ, Jiménez IA, Lotina-Hennsen B, Bazzocchi IL.
Abstract : Five friedelane triterpenoids, epifriedelinol (1), friedelin (2), canophyllol (3), pulpononic acid (4) and 3-oxo-29-hydroxyfriedelane (5), were isolated from Celastrus vulcanicola (Celastraceae), and were identified by spectroscopic methods, comparison with authentic samples and reported data. In the search for potential herbicides, compounds 1-5 were evaluated for their photosynthetic inhibitory activity. Compound 1 acts as an energy transfer inhibitor, interacting and enhancing the light-activated Mg(2+)-ATPase, while 3 behaves as a Hill reaction inhibitor. The in vivo assays indicated that 1 and 3 act as selective postemergence herbicides at 100 μM by reducing biomass production in the weed Physalis ixocarpa. Moreover, results from Chl a fluorescence transients in leaves of Lolium perenne and P. ixocarpa suggest that both compounds affect photosynthesis efficiency of the chloroplasts as a response to a process of detoxification and repair. Thus, 1 and 3 reduce biomass by more complex mechanisms than only the damaging of the photosynthetic apparatus.
