PGRL1 Participates in Iron-induced Remodeling of the Photosynthetic Apparatus and in Energy Metabolism in Chlamydomonas reinhardtii [PDF]
Journal of Biological Chemistry, 2009 PGRL1 RNA and protein levels are increased in iron-deficient Chlamydomonas reinhardtii cells. In an RNAi strain, which accumulates lower PGRL1 levels in both iron-replete and -starved conditions, the photosynthetic electron transfer rate is decreased, respiratory capacity in iron-sufficient conditions is increased, and the efficiency of cyclic electron
Dimitris Petroutsos +2 more
exaly +5 more sources
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),
Marjaana Suorsa +2 more
exaly +10 more sources
Maximal cyclic electron flow rate is independent of PGRL1 in Chlamydomonas
Biochimica Et Biophysica Acta - Bioenergetics, 2019 Cyclic electron flow (CEF) is defined as a return of the reductants from the acceptor side of Photosystem I (PSI) to the pool of its donors via the cytochrome b6f. It is described to be complementary to the linear electron flow and essential for photosynthesis.
Wojciech J Nawrocki +2 more
exaly +6 more sources
Calcium-dependent regulation of cyclic photosynthetic electron transfer by a CAS, ANR1, and PGRL1 complex [PDF]
Proceedings of the National Academy of Sciences of the United States of America, 2012 Cyclic photosynthetic electron flow (CEF) is crucial to photosynthesis because it participates in the control of chloroplast energy and redox metabolism, and it is particularly induced under adverse environmental conditions. Here we report that down-regulation of the chloroplast localized Ca 2+
Dimitris Petroutsos +2 more
exaly +5 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
PGRL1 overexpression in Phaeodactylum tricornutum inhibits growth and reduces apparent PSII activity [PDF]
The Plant Journal, 2020 SummaryProton gradient regulation 5‐like photosynthetic phenotype 1 (PGRL1)‐dependent cyclic electron transport around photosystem I (PSI) plays important roles in the response to different stresses, including high light. Although the function of PGRL1 in higher plants and green algae has been thoroughly investigated, little information is available on
Lu Zhou +8 more
openaire +3 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 Complex Containing PGRL1 and PGR5 Is Involved in the Switch between Linear and Cyclic Electron Flow in Arabidopsis [PDF]
Cell, 2008 During photosynthesis, two photoreaction centers located in the thylakoid membranes of the chloroplast, photosystems I and II (PSI and PSII), use light energy to mobilize electrons to generate ATP and NADPH. Different modes of electron flow exist, of which the linear electron flow is driven by PSI and PSII, generating ATP and NADPH, whereas the cyclic ...
G. Dal Corso +8 more
openaire +5 more sources
Additive Effects of Multiple Photoprotective Mechanisms Drive Efficient Photosynthesis Under Variable Light Conditions [PDF]
Plant, Cell &Environment, Volume 48, Issue 10, Page 7186-7198, October 2025.ABSTRACT 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 ...
Claudia Beraldo +3 more
wiley +2 more sources
The Complementary Roles of Chloroplast Cyclic Electron Transport and Mitochondrial Alternative Oxidase to Ensure Photosynthetic Performance [PDF]
Frontiers in Plant Science, 2021 Chloroplasts use light energy and a linear electron transport (LET) pathway for the coupled generation of NADPH and ATP. It is widely accepted that the production ratio of ATP to NADPH is usually less than required to fulfill the energetic needs of the ...
Avesh Chadee +3 more
doaj +2 more sources