NTRC Effects on Non-Photochemical Quenching Depends on PGR5 [PDF]
Antioxidants, 2021 Non-photochemical quenching (NPQ) protects plants from the detrimental effects of excess light. NPQ is rapidly induced by the trans-thylakoid proton gradient during photosynthesis, which in turn requires PGR5/PGRL1-dependent cyclic electron flow (CEF ...
BELÉN Naranjo +2 more
exaly +6 more sources
The Physiological Functionality of PGR5/PGRL1-Dependent Cyclic Electron Transport in Sustaining Photosynthesis [PDF]
Frontiers in Plant Science, 2021 The cyclic electron transport (CET), after the linear electron transport (LET), is another important electron transport pathway during the light reactions of photosynthesis.
Yifei Liu, Chunming Bai, Zhiyu Sun
exaly +8 more sources
Deletion of Proton Gradient Regulation 5 (PGR5) and PGR5-Like 1 (PGRL1) proteins promote sustainable light-driven hydrogen production in Chlamydomonas reinhardtii due to increased PSII activity under sulfur deprivation [PDF]
Frontiers in Plant Science, 2015 Continuous hydrogen photo-production under sulfur deprivation was studied in the Chlamydomonas reinhardtii pgr5 pgrl1 double mutant and respective single mutants.
Janina Steinbeck +2 more
exaly +6 more sources
Dysfunction of Chloroplast Protease Activity Mitigates pgr5 Phenotype in the Green Algae Chlamydomonas reinhardtii [PDF]
PlantsResearchers have described protection mechanisms against the photoinhibition of photosystems under strong-light stress. Cyclic Electron Flow (CEF) mitigates electron acceptor-side limitation, and thus contributes to Photosystem I (PSI) protection ...
Shin-Ichiro Ozawa +2 more
doaj +5 more sources
PGRL2 triggers degradation of PGR5 in the absence of PGRL1 [PDF]
Nature Communications, 2021 It is currently thought that the thylakoid proteins PGRL1 and PGR5 form a complex to mediate cyclic electron flow (CEF) around photosystem I. Here the authors show that CEF can in fact be mediated by PGR5 alone and that PGRL1 and the homologous PGRL2 ...
Thilo Rühle +2 more
exaly +4 more sources
Inactivation of photosynthetic cyclic electron transports upregulates photorespiration for compensation of efficient photosynthesis in Arabidopsis [PDF]
Frontiers in Plant Science, 2023 Plants have multiple mechanisms to maintain efficient photosynthesis. Photosynthetic cyclic electron transports around photosystem I (CET), which includes the PGR5/PGRL1 and NDH pathways, and photorespiration play a crucial role in photosynthetic ...
Qi Chen +4 more
doaj +4 more sources
High light-induced changes in whole-cell proteomic profile and its correlation with the organization of thylakoid super-complex in cyclic electron transport mutants of Chlamydomonas reinhardtii [PDF]
Frontiers in Plant Science, 2023 Light and nutrients are essential components of photosynthesis. Activating the signaling cascades is critical in starting adaptive processes in response to high light.
Ranay Mohan Yadav +4 more
doaj +2 more sources
A minute-scale P515 kinetic traces light-driven proton gradient formation in dark-incubated Synechocystis sp. PCC 6803. [PDF]
Physiol PlantAbstract The light‐driven formation of a proton‐motive force (pmf) across thylakoid membranes is crucial for ATP synthesis and photosynthesis in chloroplasts and cyanobacteria. Cyclic electron flow (CEF) around photosystem (PS) I is hypothesized to be a key contributor to pmf formation, but direct observation of CEF in vivo remains a major challenge ...
Zhivkovikj M +4 more
europepmc +2 more sources
Optimizing algal hydrogen photoproduction: a simplified and efficient protocol for anoxic induction in a semi-autotrophic approach. [PDF]
Physiol PlantAbstract Green microalgae, such as Chlamydomonas reinhardtii, show great potential for producing green hydrogen using only water and sunlight, with no carbon emissions. However, sustainable hydrogen production requires addressing the hydrogenase sensitivity to oxygen and enhancing electron allocation to this enzyme.
Khosravitabar F +3 more
europepmc +2 more sources
Additive Effects of Multiple Photoprotective Mechanisms Drive Efficient Photosynthesis Under Variable Light Conditions. [PDF]
Plant Cell EnvironABSTRACT To cope with changing external conditions, plants undergo dynamic acclimation processes that adjust their photosynthetic machinery, optimising energy use while minimising damage to photosystems (PS). Key photoprotective mechanisms include non‐photochemical quenching (NPQ), which dissipates excess excitation energy, and alternative electron ...
Beraldo C +3 more
europepmc +2 more sources