Results 11 to 20 of about 4,378,647 (283)
Cyclic electron transport in C3 plants: fact or artefact? [PDF]
Journal of Experimental Botany, 2004 The phenomenon of cyclic electron transport was first characterized in higher plant chloroplasts 50 years ago, yet there is still a debate about whether or not this is a physiological process. The recent isolation of mutants that appear to lack cyclic electron transport, as well as new data providing functional evidence for its occurrence, support the ...
Johnson, Giles N.; id_orcid
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Physiology of PSI cyclic electron transport in higher plants
Biochimica et Biophysica Acta (BBA) - Bioenergetics, 2011 Having long been debated, it is only in the last few years that a concensus has emerged that the cyclic flow of electrons around Photosystem I plays an important and general role in the photosynthesis of higher plants. Two major pathways of cyclic flow have been identified, involving either a complex termed NDH or mediated via a pathway involving a ...
Giles N. Johnson +1 more
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Reprint of: Physiology of PSI cyclic electron transport in higher plants
Biochimica et Biophysica Acta (BBA) - Bioenergetics, 2011 Having long been debated, it is only in the last few years that a concensus has emerged that the cyclic flow of electrons around Photosystem I plays an important and general role in the photosynthesis of higher plants. Two major pathways of cyclic flow have been identified, involving either a complex termed NDH or mediated via a pathway involving a ...
Giles N. Johnson +1 more
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Role of cyclic and pseudo‐cyclic electron transport in response to dynamic light changes in
Plant, Cell & Environment, 2018 Abstract Photosynthetic organisms support cell metabolism by harvesting sunlight and driving the electron transport chain at the level of thylakoid membranes. Excitation energy and electron flow in the photosynthetic apparatus is continuously modulated in response to dynamic environmental conditions.
Storti, Mattia +5 more
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Evidence for two cyclic photophosphorylation reactions concurrent with ferredoxin-catalyzed non-cyclic electron transport [PDF]
Biochimica et Biophysica Acta (BBA) - Bioenergetics, 1985 Abstract Addition of ferredoxin to isolated spinach chloroplast thylakoid membranes reconstitutes phosphorylating electron transfer characterized by elevated P/O ratios (1.6). When oxygen is the terminal electron acceptor for reduced ferredoxin, the P/O value is lowered by antimycin A or low concentrations (10 μM) of heparin (an anionic macromolecule)
Hosler, Jonathan P., Yocum, Charles F.
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Electron transport and light-harvesting switches in cyanobacteria [PDF]
Frontiers in Plant Science, 2014 Cyanobacteria possess multiple mechanisms for regulating the pathways of photosynthetic and respiratory electron transport. Electron transport may be regulated indirectly by controlling the transfer of excitation energy from the light-harvesting ...
Conrad W. Mullineaux
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Down-regulation of linear and activation of cyclic electron transport during drought [PDF]
Planta, 2003 The effects of short-term drought on the regulation of electron transport through photosystems I and II (PSI and PSII) have been studied in Hordeum vulgare L. cv. Chariot. Fluorescence measurements demonstrated that electron flow through PSII decreased in response to both drought and CO2 limitation.
Golding, Alison J. +1 more
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Biochimica et Biophysica Acta (BBA) - Bioenergetics, 1999 The relationship between state transitions and the kinetic properties of the electron transfer chain has been studied in Chlamydomonas reinhardtii. The same turnover rate of cytochrome f was found in state 1 and 2. However, while DBMIB was inhibitory in both states, DCMU was effective only in state 1.
Finazzi, Giovanni +3 more
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In vivo temperature dependence of cyclic and pseudocyclic electron transport in barley
Planta, 2001 The effect of temperature on the rate of electron transfer through photosystems I and II (PSI and PSII) was investigated in leaves of barley (Hordeum vulgare L.). Measurements of PSI and PSII photochemistry were made in 21% O2 and in 2% O2, to limit electron transport to O2 in the Mehler reaction.
Clarke, Joanne E. +1 more
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Flavodiiron Protein Activity Outcompetes Cyclic Electron Transport When Expressed in Angiosperm Nicotiana tabacum. [PDF]
Physiol PlantIn conditions of excess illumination, alternative electron transport pathways in the thylakoid membranes protect the photosynthetic apparatus against damage from eventual over-reduction.
Rizzetto N +7 more
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