The Significance of Chloroplast NAD(P)H Dehydrogenase Complex and Its Dependent Cyclic Electron Transport in Photosynthesis

Ma, Mingzhu; Liu, Yifei; Bai, Chen; Yong, Jean Wan Hong

doi:10.3389/fpls.2021.661863

Cited by 24 publications

(11 citation statements)

References 107 publications

(130 reference statements)

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“…However, there would be insufficient ATP from the LET during certain multiple stress situations. Plants could compensate for the deficiency of ATP/NADPH in the LET by using the CET around the PSI ( Sato et al, 2019 ; Ma et al, 2021 ), the water-water cycle (Mehler reaction; Asada et al, 1999 ) and the mitochondrial alternative oxidase respiration ( Meng et al, 2012 ).…”

Section: Photosynthetic Electron Transportmentioning

confidence: 99%

The Physiological Functionality of PGR5/PGRL1-Dependent Cyclic Electron Transport in Sustaining Photosynthesis

Liu

Bai

et al. 2021

Front. Plant Sci.

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The cyclic electron transport (CET), after the linear electron transport (LET), is another important electron transport pathway during the light reactions of photosynthesis. The proton gradient regulation 5 (PGR5)/PRG5-like photosynthetic phenotype 1 (PGRL1) and the NADH dehydrogenase-like complex pathways are linked to the CET. Recently, the regulation of CET around photosystem I (PSI) has been recognized as crucial for photosynthesis and plant growth. Here, we summarized the main biochemical processes of the PGR5/PGRL1-dependent CET pathway and its physiological significance in protecting the photosystem II and PSI, ATP/NADPH ratio maintenance, and regulating the transitions between LET and CET in order to optimize photosynthesis when encountering unfavorable conditions. A better understanding of the PGR5/PGRL1-mediated CET during photosynthesis might provide novel strategies for improving crop yield in a world facing more extreme weather events with multiple stresses affecting the plants.

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Section: Photosynthetic Electron Transportmentioning

confidence: 99%

The Physiological Functionality of PGR5/PGRL1-Dependent Cyclic Electron Transport in Sustaining Photosynthesis

Liu

Bai

et al. 2021

Front. Plant Sci.

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“…It is not clear if a similar redox-state induced phenomenon occurs also in red algae. If it is the case it is likely to be connected with one of the chloroplast NAD(P)H dehydrogenases (Ma et al, 2021). Experiments are underway to address this issue.…”

Section: Strategies For Fluctuating Light Utilisation In C Merolae Cellsmentioning

confidence: 99%

Molecular mechanisms of long-term light adaptation of an extremophilic alga Cyanidioschyzon merolae

Abram

Kaňa

Olofsson

et al. 2022

Preprint

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Oxygenic phototrophs have evolved a remarkable plethora of strategies to react to changes in light intensity and spectral range, which allows them to thrive in a wide range of environmental conditions. Varying light quality and quantity influences the balance between solar energy capture and utilisation in photosynthesis, affecting concomitantly the downstream processes of central carbon and nitrogen metabolism as well as cellular growth and division. Here, we performed a comprehensive analysis of the mechanisms of long-term photoacclimation of an extremophilic red alga Cyanidioschyzon merolae that grows in sulphuric hot springs at high temperatures and low pH. By using spectroscopic, confocal fluorescence microscopy, photosynthetic performance measurements and global transcriptome analyses, we identified several molecular mechanisms underlying the long-term adaptation of this acido-thermophilic red alga to varying light intensity and spectral quality. These include: (1) remodelling of the functional antenna size of both photosystems; (2) rearrangement of the PSB/PSII/PSI microdomains within thylakoids; (3) modulation of the photosynthetic performance parameters, especially at the level of non-photochemical quenching, and (4) transcriptional regulation of photosynthesis and its regulatory components as well as downstream metabolic pathways related to ROS detoxification, cell/organelle division, and central carbon and nitrogen metabolism. Such an intricate network of interplay between light-driven reactions and downstream metabolic pathways provides the necessary basis for maintaining the highest photosynthetic performance under light-limiting conditions.

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“…The cyclic electron transport (CET) process is involved in chloroplast energy regulation and redox metabolism, which is particularly important for photosynthesis. The studies demonstrated that CET has two pathways, PGR5/PGRL1-mediated pathway and the NDH-mediated pathway ( Johnson et al., 2014 ; Ma et al., 2021a ). The protein interaction between CAS and PGRL1 was confirmed in Chlamydomonas reinhardtii , indicating that there is a link between CAS and CET ( Terashima et al., 2012 ; Ma et al., 2021b ).…”

Section: Cas and Photosynthesismentioning

confidence: 99%

The significance of calcium-sensing receptor in sustaining photosynthesis and ameliorating stress responses in plants

Bai

Han

et al. 2022

Front. Plant Sci.

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Calcium ions (Ca2+) regulate plant growth and development during exposure to multiple biotic and abiotic stresses as the second signaling messenger in cells. The extracellular calcium-sensing receptor (CAS) is a specific protein spatially located on the thylakoid membrane. It regulates the intracellular Ca2+ responses by sensing changes in extracellular Ca2+ concentration, thereby affecting a series of downstream signal transduction processes and making plants more resilient to respond to stresses. Here, we summarized the discovery process, structure, and location of CAS in plants and the effects of Ca2+ and CAS on stomatal functionality, photosynthesis, and various environmental adaptations. Under changing environmental conditions and global climate, our study enhances the mechanistic understanding of calcium-sensing receptors in sustaining photosynthesis and mediating abiotic stress responses in plants. A better understanding of the fundamental mechanisms of Ca2+ and CAS in regulating stress responses in plants may provide novel mitigation strategies for improving crop yield in a world facing more extreme climate-changed linked weather events with multiple stresses during cultivation.

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The Significance of Chloroplast NAD(P)H Dehydrogenase Complex and Its Dependent Cyclic Electron Transport in Photosynthesis

Cited by 24 publications

References 107 publications

The Physiological Functionality of PGR5/PGRL1-Dependent Cyclic Electron Transport in Sustaining Photosynthesis

The Physiological Functionality of PGR5/PGRL1-Dependent Cyclic Electron Transport in Sustaining Photosynthesis

Molecular mechanisms of long-term light adaptation of an extremophilic alga Cyanidioschyzon merolae

The significance of calcium-sensing receptor in sustaining photosynthesis and ameliorating stress responses in plants

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