ArticleJournal of experimental botany2020
The non-photochemical quenching protein LHCSR3 prevents oxygen-dependent photoinhibition in Chlamydomonas reinhardtii.
Article in Journal of experimental botany, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers.
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31 citing papers in PubMed, 57 citations in OpenAlex.
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- Singlet-Oxygen-Mediated Regulation of Photosynthesis-Specific Genes: A Role for Reactive Electrophiles in Signal Transduction.International journal of molecular sciences · 2024Article
- Hormetic Response of Photosystem II Function Induced by Nontoxic Calcium Hydroxide Nanoparticles.International journal of molecular sciences · 2024Article
- Ultrafast energy quenching mechanism of LHCSR3-dependent photoprotection in Chlamydomonas.Nature communications · 2024Article
- Mechanistic Approach on Melatonin-Induced Hormesis of Photosystem II Function in the Medicinal PlantPlants (Basel, Switzerland) · 2023Article
- Impact of Coated Zinc Oxide Nanoparticles on Photosystem II of Tomato Plants.Materials (Basel, Switzerland) · 2023Article
- Hormesis Responses of Photosystem II inInternational journal of molecular sciences · 2023Article
- Light-independent regulation of algal photoprotection by CONature communications · 2023Article
- Arbuscular mycorrhizal fungi associated with maize plants during hydric deficit.Scientific reports · 2023Article
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- High light-induced changes in whole-cell proteomic profile and its correlation with the organization of thylakoid super-complex in cyclic electron transport mutants ofFrontiers in plant science · 2023Article
- β-Cyclocitral Does Not Contribute to Singlet Oxygen-Signalling in Algae, but May Down-Regulate Chlorophyll Synthesis.Plants (Basel, Switzerland) · 2022Article
- Interplay between LHCSR proteins and state transitions governs the NPQ response in Chlamydomonas during light fluctuations.Plant, cell & environment · 2022Article
- Transcriptional regulation of photoprotection in dark-to-light transition-More than just a matter of excess light energy.Science advances · 2022Article
- Reactive Oxygen Species Initiate Defence Responses of Potato Photosystem II to Sap-Sucking Insect Feeding.Insects · 2022Article
- Photosynthesis and pigment production: elucidation of the interactive effects of nutrients and light on Chlamydomonas reinhardtii.Bioprocess and biosystems engineering · 2022Article
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Authors and funding
4 authors at 2 institutions in 3 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Non-photochemical quenching (NPQ) helps dissipate surplus light energy, preventing formation of reactive oxygen species (ROS). In Chlamydomonas reinhardtii, the thylakoid membrane protein LHCSR3 is involved in pH-dependent (qE-type) NPQ, lacking in the npq4 mutant. Preventing PSII repair revealed that npq4 lost PSII activity faster than the wild type (WT) in elevated O2, while no difference between strains was observed in O2-depleted conditions. Low Fv/Fm values remained 1.5 h after moving cells out of high light, and this qH-type quenching was independent of LHCSR3 and not accompanied by losses of maximum PSII activity. Culturing cells in historic O2 atmospheres (30-35%) increased the qE of cells, due to increased LHCSR1 and PsbS levels, and LHCSR3 in the WT, showing that atmospheric O2 tensions regulate qE capacity. Colony growth of npq4 was severely restricted at elevated O2, and npq4 accumulated more reactive electrophile species (RES) than the WT, which could damage PSI. Levels of PsaA (PSI) were lower in npq4 grown at 35% O2, while PsbA (PSII) levels remained stable. We conclude that even at high O2 concentrations, the PSII repair cycle is sufficient to maintain net levels of PSII. However, LHCSR3 has an important function in protecting PSI against O2-mediated damage, such as via RES.
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