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PGR5-PGRL1-Dependent Cyclic Electron Transport Modulates Linear Electron Transport Rate in Arabidopsis thaliana [PDF]
Molecular Plant, 2016 Plants need tight regulation of photosynthetic electron transport for survival and growth under environmental and metabolic conditions. For this purpose, the linear electron transport (LET) pathway is supplemented by a number of alternative electron transfer pathways and valves. In Arabidopsis, cyclic electron transport (CET) around photosystem I (PSI),
Luca Tadini +2 more
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Cyclic Photophosphorylation and Electron Transport
Biochimica Et Biophysica Acta - Bioenergetics, 1995 Derek S Bendall, Robert S Manasse
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Contribution of Cyclic and Pseudo-Cyclic Electron Transport to the Formation of Proton Motive Force in Chloroplasts [PDF]
Molecular Plant, 2017 Photosynthetic electron transport is coupled to proton translocation across the thylakoid membrane, resulting in the formation of a trans-thylakoid proton gradient (ΔpH) and membrane potential (Δψ). Ion transporters and channels localized to the thylakoid membrane regulate the contribution of each component to the proton motive force (pmf).
Hiroshi Yamamoto, Toshiharu Shikanai
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Cyclic Electron Transport Through Photosystem I
Plant Biotechnology, 2005 Ferredoxin (Fd)-dependent cyclic electron transport through photosystem I (PSI) was first discovered to be cyclic photophosphorylation coupled with ATP synthesis in the chloroplast. Although pioneer studies provided important information, the physiological significance of this electron transport has been underestimated in C3 plants.
Toshiharu Shikanai
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Structural insights into photosynthetic cyclic electron transport
Molecular Plant, 2023During photosynthesis, light energy is utilized to drive sophisticated biochemical chains of electron transfers, converting solar energy into chemical energy that feeds most life on earth. Cyclic electron transfer/flow (CET/CEF) plays an essential role in efficient photosynthesis, as it balances the ATP/NADPH ratio required in various regulatory and ...
Shumeng Zhang +6 more
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The Relationship of the Cyclic and Non-Cyclic Electron Transport Pathways in Chloroplasts
Biochimica Et Biophysica Acta - Bioenergetics, 1980Light-induced redox changes of plastocyanin, the Rieske iron-sulfur center, and P-700 have been studied in situ in spinach chloroplasts. Plastocyanin and the Rieske center behaved in an analogous manner in that their steady states were fully oxidized in the light in the presence or absence of 3-(3,4-dichlorophenyl)-1,1-dimethylurea when an electron ...
Richard Malkin, R K Chain
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Cyclic Electron Transport Around Photosystem I: Genetic Approaches
Annual Review of Plant Biology, 2007The light reactions in photosynthesis convert light energy into chemical energy in the form of ATP and drive the production of NADPH from NADP+. The reactions involve two types of electron flow in the chloroplast. While linear electron transport generates both ATP and NADPH, photosystem I cyclic electron transport is exclusively involved in ATP ...
Toshiharu Shikanai
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Partial characterization of cyclic electron transport in intact chloroplasts
Archives of Biochemistry and Biophysics, 1980Turnover of the cyclic electron transfer chain around photosystem I in intact chloroplasts was induced by addition of sodium dithionite after poisoning with 3-(3,4-dichlorophenyl)-1,1-dimethylurea. A substantial permeability barrier to dithionite allowed redox poising to a level sufficiently negative to active, but not overreduce, the cycle.
D, Crowther, G, Hind
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Dissection of respiratory and cyclic electron transport in Synechocystis sp. PCC 6803
Journal of Plant Research, 2022Cyclic electron transport (CET) is an attractive hypothesis for regulating photosynthetic electron transport and producing the additional ATP in oxygenic phototrophs. The concept of CET has been established in the last decades, and it is proposed to function in the progenitor of oxygenic photosynthesis, cyanobacteria.
Shoko Kusama +3 more
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The Involvement of Ferredoxin-NADP+ Reductase in Cyclic Electron Transport in Chloroplasts
Biochimica Et Biophysica Acta - Bioenergetics, 1981The sites of action, in spinach thylakoid, of known inhibitors of electron transport at the reducing end of photosystem I have been more accurately located by parallel investigation of effects on three partial reactions: photo-reduction (from water) of added NADP+, photoreduction of added cytochrome c, and dark reduction of cyto-chrome c by added NADPH.
Geoffrey Hind +2 more
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