Results 171 to 180 of about 55,147 (208)
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Inhibitors in the functional dissection of the photosynthetic electron transport system
Photosynthesis Research, 2007The significance of inhibitors and artificial electron acceptor and donor systems as experimental tools for studying the photosynthetic system is described by reviewing early classical articles. The historical development in unravelling the role and sequence of electron carriers and energy conserving sites in the electron transport chain is ...
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Possible mode of action of a photosynthetic inhibitor produced byPandorina morum
Archives of Microbiology, 1974The mode of action of the photosynthetic inhibitor produced byPandorina morum was examined by exposingVolvox globator and isolated spinach chloroplasts to a partially purified inhibitor preparation. Oxygen evolution ofVolvox, whole chloroplasts, and broken chloroplasts (-Calvin cycle) was reduced indicating that the substances inhibit the light ...
Denny O. Harris, C. David Caldwell
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Biochimica et Biophysica Acta (BBA) - Bioenergetics, 1987
Abstract Halogenated 1,4-benzoquinones are effective inhibitors of photosynthetic electron transport through Photosystem II and the cytochrome b 6 f- complex as well. Due to their properties as vinylogous acid halides they can react with nucleophilic groups of soluble molecules or membrane-bound proteins under formation of a covalent ...
Walter Oettmeier +2 more
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Abstract Halogenated 1,4-benzoquinones are effective inhibitors of photosynthetic electron transport through Photosystem II and the cytochrome b 6 f- complex as well. Due to their properties as vinylogous acid halides they can react with nucleophilic groups of soluble molecules or membrane-bound proteins under formation of a covalent ...
Walter Oettmeier +2 more
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Photosynthetic Inhibitors From Capsicum annuum L.: Extraction and Bioassay
Australian Journal of Plant Physiology, 1980Photosynthesis of leaf slices from Capsicum annuum L. was inhibited by specific fractions from high-performance liquid chromatographic separations of extracts from those same plants. Two regions were apparent-a rapidly eluting discrete zone of high potency and a second more diffuse zone of lower activity which would have included phaseic acid ...
PE Kriedemann, BR Loveys, HMV Dijk
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Sites of action of photosynthetic inhibitor herbicides; Experiments with trypsinated chloroplasts
Pesticide Science, 1979AbstractThe effect of four photosynthetic inhibitor herbicides, bromacil, ioxynil, metribuzin and monuron, on chloroplast electron transport was investigated. All four compounds completely inhibited electron flow with tripotassium hexacyanoferrate as oxidant, but the inhibition caused by bromacil, metribuzin and monuron was almost totally reversed by ...
Kenneth E. Pallett, Alan D. Dodge
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Influence of photosynthetic inhibitors on peach
2020Several photosynthetic inhibitors were screened for relative photosynthetic reduction on leaves of greenhouse-grown peach trees. The most effective were 8% Vapor Gard, 10M diurcn, 10⁻³M ABA, and 10⁻³M terbacil, all of which reduced net photosynthesis (Pn) rates by 50% or more by 1 day after treatment without causing excessive phytotoxicity.
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Nature of the Receptor Site for Photosynthetic Electron Transport Inhibitors
1984Recently, a new group of Hill inhibitor herbicides, the 3-methylphenylamino2-cyanoacrylic acid esters (I, R1 = phenyl; R2 = methyl; R3 = alkyl) have been reported (Huppatz et al. 1981). Further studies have show that Hill inhibitory activity, as measured by pI50 values using pea chloroplast suspensions (Brown et al.
John N. Phillips, John L. Huppatz
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Activators and inhibitors of photosynthetic enzymes from Rumex dentatus cotyledons
Journal of Plant Physiology, 2001Summary The activities of ribulose-1,5-bisphosphate carboxylase (EC, 4.1.1.39), phosphoenolpyruvate carboxylase (EC, 4.1.1.31), NADP-glyceraldehyde-3-phosphate dehydrogenase (EC, 1.1.1.8), pyruvate orthophosphate dikinase (EC, 2.7.9.1), and NADP-malate dehydrogenase (EC, 1.1.1.82) were measured in the cotyledons of Rumex dentatus .
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Pesticide Science, 1999
It is shown that a number of new 2-benzylamino-1,3,5-triazines have a similar antagonistic effect to diuron on the phytotoxic activity of peroxidizing herbicides.
H Kohno +6 more
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It is shown that a number of new 2-benzylamino-1,3,5-triazines have a similar antagonistic effect to diuron on the phytotoxic activity of peroxidizing herbicides.
H Kohno +6 more
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Photosynthesis Research, 1988
Phosphoenolpyruvate carboxylase from leaves of the C4 plant Setaria verticillata (L.) Beauv. is activated by light; day levels of activity are reached after 30 minutes of illumination. Photoactivation is prevented by inhibitors of photosynthetic electron flow or of photophosphorylation and by D,L-glyceraldehyde, which inhibits the reductive pentose ...
Y, Samaras, Y, Manetas, N A, Gavalas
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Phosphoenolpyruvate carboxylase from leaves of the C4 plant Setaria verticillata (L.) Beauv. is activated by light; day levels of activity are reached after 30 minutes of illumination. Photoactivation is prevented by inhibitors of photosynthetic electron flow or of photophosphorylation and by D,L-glyceraldehyde, which inhibits the reductive pentose ...
Y, Samaras, Y, Manetas, N A, Gavalas
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