Results 21 to 30 of about 75,367 (254)

Endogenous cyclic electron transport in broken chloroplasts [PDF]

open access: yesFEBS Letters, 1980
Cyclic electron flow around photosystem I plays an important role in providing sufficient ATP for the photosynthetic assimilation of COz [ 1,2]. Cyclic activity may be observed in isolated intact chloroplasts [2,3] but is lost, along with NADP+ reduction, during the isolation of naked thylakoids; however, addition of ferredoxin has been reported [4,5 ...
Shahak, Yosepha   +2 more
openaire   +1 more source

NaCl Pretreatment Enhances the Low Temperature Tolerance of Tomato Through Photosynthetic Acclimation

open access: yesFrontiers in Plant Science, 2022
Plants often need to withstand multiple types of environmental stresses (e.g., salt and low temperature stress) because of their sessile nature. Although the physiological responses of plants to single stressor have been well-characterized, few studies ...
Xiaolong Yang   +8 more
doaj   +1 more source

Downregulation of PSII activity and increased cyclic electron transport in cotton prevents PSI from photoinhibition due to night chilling

open access: yesPhotosynthetica, 2019
The objective of this experiment was to study the effects of night chilling on the photosynthetic characteristics of cotton (Gossypium hirsutum L.) at a boll-forming stage. The results suggest that overreduction of PSII after night chilling (≤ 10°C) led
F. XIAO   +3 more
doaj   +1 more source

Autophagy Induced Accumulation of Lipids in pgrl1 and pgr5 of Chlamydomonas reinhardtii Under High Light

open access: yesFrontiers in Plant Science, 2022
Chlamydomonas (C.) reinhardtii is a potential microalga for lipid production. Autophagy-triggered lipid metabolism in microalgae has not being studied so far from a mutant of proton gradient regulation 1 like (PGRL1) and proton gradient regulation 5 ...
Nisha Chouhan   +3 more
doaj   +1 more source

Evaluation of Light-Dependent Photosynthetic Reactions in Reynoutria japonica Houtt. Leaves Grown at Different Light Conditions

open access: yesFrontiers in Plant Science, 2021
The Japanese knotweed (Reynoutria japonica Houtt.) is considered as one of the most aggressive and highly successful invasive plants with a negative impact on invaded habitats.
Selma Mlinarić   +5 more
doaj   +1 more source

Computational Analysis of Alternative Photosynthetic Electron Flows Linked With Oxidative Stress

open access: yesFrontiers in Plant Science, 2021
During photosynthesis, organisms respond to their energy demand and ensure the supply of energy and redox equivalents that sustain metabolism. Hence, the photosynthetic apparatus can, and in fact should, be treated as an integrated supply-demand system ...
Nima P. Saadat   +8 more
doaj   +1 more source

Concerning a Dual Function of Coupled Cyclic Electron Transport in Leaves [PDF]

open access: yesPlant Physiology, 1992
Coupled cyclic electron transport is assigned a role in the protection of leaves against photoinhibition in addition to its role in ATP synthesis. In leaves, as in reconstituted thylakoid systems, cyclic electron transport requires "poising," i.e. availability of electrons at the reducing side of photosystem I (PSI) and the presence of some oxidized ...
U, Heber, D, Walker
openaire   +2 more sources

Electron transport and light-harvesting switches in cyanobacteria

open access: yesFrontiers 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
doaj   +1 more source

The Role of Alternative Electron Pathways for Effectiveness of Photosynthetic Performance of Arabidopsis thaliana, Wt and Lut2, under Low Temperature and High Light Intensity

open access: yesPlants, 2022
A recent investigation has suggested that the enhanced capacity for PSI-dependent cyclic electron flow (CEF) and PSI-dependent energy quenching that is related to chloroplast structural changes may explain the lower susceptibility of lut2 to combined ...
Antoaneta V. Popova   +3 more
doaj   +1 more source

24-epibrassinolide improved chilled tomato photosynthetic performance by stabilizing electron transport chain and function of photosystem II

open access: yesBiologia Plantarum, 2022
To explore the protective mechanisms of brassinosteroids in the chill-induced photoinhibition in tomato (Solanum lycopersicum), we studied the effect of foliar sprayed 24-epibrassinolide (EBR, 0.1µM) on the gas exchange, chlorophyll fluorescence ...
W.-H. HU   +4 more
doaj   +1 more source

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