ArticlePlant physiology2016
The Type II NADPH Dehydrogenase Facilitates Cyclic Electron Flow, Energy-Dependent Quenching, and Chlororespiratory Metabolism during Acclimation of Chlamydomonas reinhardtii to Nitrogen Deprivation.
Article in Plant physiology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.
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Who cites it
24 citing papers in PubMed, 65 citations in OpenAlex.
- Transfer of chloroplastSynthetic and systems biotechnology · 2027Article
- Repeated loss of plastid NDH during evolution of land plants.Annals of botany · 2026Review
- Photosynthetic Electron Flows and Networks of Metabolite Trafficking to Sustain Metabolism in Photosynthetic Systems.Plants (Basel, Switzerland) · 2024Review
- Alternative electron pathways of photosynthesis power green algal CO2 capture.The Plant cell · 2024Article
- Lighting the way: Compelling open questions in photosynthesis research.The Plant cell · 2024Article
- Regulation of Microalgal Photosynthetic Electron Transfer.Plants (Basel, Switzerland) · 2024Review
- Characterizing compensatory mechanisms in the absence of photoprotective qE in Chlamydomonas reinhardtii.Photosynthesis research · 2023Article
- High salt-induced PSI-supercomplex is associated with high CEF and attenuation of state transitions.Photosynthesis research · 2023Article
- Restricting electron flow at cytochrome b6f when downstream electron acceptors are severely limited.Plant physiology · 2023Article
- Systems-wide analysis revealed shared and unique responses to moderate and acute high temperatures in the green alga Chlamydomonas reinhardtii.Communications biology · 2022Article
- Patterning of the Autotrophic, Mixotrophic, and Heterotrophic Proteomes of Oxygen-Evolving CyanobacteriumFrontiers in microbiology · 2022Article
- Development of photosynthetic carbon fixation model using multi-excitation wavelength fast repetition rate fluorometry in Lake Biwa.PloS one · 2021Article
- Metabolic control of acclimation to nutrient deprivation dependent on polyphosphate synthesis.Science advances · 2020Article
- Responses of a Newly Evolved Auxotroph of Chlamydomonas to BPlant physiology · 2020Article
- Chlorella vulgaris genome assembly and annotation reveals the molecular basis for metabolic acclimation to high light conditions.The Plant journal : for cell and molecular biology · 2019Article
- Subcellular Energetics and Carbon Storage inCells · 2019Review
- Alternative outlets for sustaining photosynthetic electron transport during dark-to-light transitions.Proceedings of the National Academy of Sciences of the United States of America · 2019Article
- Article
- Photorespiration is complemented by cyclic electron flow and the alternative oxidase pathway to optimize photosynthesis and protect against abiotic stress.Photosynthesis research · 2019Review
- The mitochondrial alternative oxidase fromThe Journal of biological chemistry · 2019Article
Corrections and comments
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Authors and funding
3 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
When photosynthetic organisms are deprived of nitrogen (N), the capacity to grow and assimilate carbon becomes limited, causing a decrease in the productive use of absorbed light energy and likely a rise in the cellular reduction state. Although there is a scarcity of N in many terrestrial and aquatic environments, a mechanistic understanding of how photosynthesis adjusts to low-N conditions and the enzymes/activities integral to these adjustments have not been described. In this work, we use biochemical and biophysical analyses of photoautotrophically grown wild-type and mutant strains of Chlamydomonas reinhardtii to determine the integration of electron transport pathways critical for maintaining active photosynthetic complexes even after exposure of cells to N deprivation for 3 d. Key to acclimation is the type II NADPH dehydrogenase, NDA2, which drives cyclic electron flow (CEF), chlororespiration, and the generation of an H(+) gradient across the thylakoid membranes. N deprivation elicited a doubling of the rate of NDA2-dependent CEF, with little contribution from PGR5/PGRL1-dependent CEF The H(+) gradient generated by CEF is essential to sustain nonphotochemical quenching, while an increase in the level of reduced plastoquinone would promote a state transition; both are necessary to down-regulate photosystem II activity. Moreover, stimulation of NDA2-dependent chlororespiration affords additional relief from the elevated reduction state associated with N deprivation through plastid terminal oxidase-dependent water synthesis. Overall, rerouting electrons through the NDA2 catalytic hub in response to photoautotrophic N deprivation sustains cell viability while promoting the dissipation of excess excitation energy through quenching and chlororespiratory processes.
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