ArticleProceedings of the National Academy of Sciences of the United States of America2013
A thioredoxin-like/β-propeller protein maintains the efficiency of light harvesting in Arabidopsis.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 54 papers.
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Who cites it
54 citing papers in PubMed, 91 citations in OpenAlex.
- Article
- Multilevel synergistic mechanisms of a nanocarrier-enabled topramezone herbicide against invasive weeds.Journal of nanobiotechnology · 2026Article
- Residue P132 of PsbS plays an important role in regulating the dynamics of non-photochemical quenching in Arabidopsis.Plant communications · 2026Article
- Multi-omics analysis reveals distinct responses to light stress in photosynthesis and primary metabolism between maize and rice.Plant communications · 2025Article
- The cell biology and genome ofMolecular biology of the cell · 2025Article
- The thylakoid lumen Deg1 protease affects non-photochemical quenching via the levels of violaxanthin de-epoxidase and PsbS.The Plant journal : for cell and molecular biology · 2025Article
- Unravelling the different components of nonphotochemical quenching using a novel analytical pipeline.The New phytologist · 2025Article
- Identification of PsbS binding proteins inFrontiers in plant science · 2025Article
- Strategies for adaptation to high light in plants.aBIOTECH · 2024Review
- A Simple Sonication Method to Isolate the Chloroplast Lumen inBio-protocol · 2023Article
- Current Insights into the Redox Regulation Network in Plant Chloroplasts.Plant & cell physiology · 2023Review
- Resistance of Primary Photosynthesis to Photoinhibition in Antarctic LichenPlants (Basel, Switzerland) · 2023Article
- STN7 is not essential for developmental acclimation of Arabidopsis to light intensity.The Plant journal : for cell and molecular biology · 2023Article
- Temperature mapping of non-photochemical quenching in Chlorella vulgaris.Photosynthesis research · 2023Article
- Dynamics of Rubisco regulation by sugar phosphate derivatives and their phosphatases.Journal of experimental botany · 2023Article
- Light quality as a driver of photosynthetic apparatus development.Biophysical reviews · 2022Review
- Structure of Arabidopsis SOQ1 lumenal region unveils C-terminal domain essential for negative regulation of photoprotective qH.Nature plants · 2022Article
- Non-Photochemical Quenching: From Light Perception to Photoprotective Gene Expression.International journal of molecular sciences · 2022Review
- Oxidative regulation of chloroplast enzymes by thioredoxin and thioredoxin-like proteins inProceedings of the National Academy of Sciences of the United States of America · 2021Article
- Current Knowledge on Mechanisms Preventing Photosynthesis Redox Imbalance in Plants.Antioxidants (Basel, Switzerland) · 2021Review
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Authors and funding
4 authors at 2 institutions in 1 country.
Funding
Abstract
The light-harvesting complexes of plants have evolved the ability to switch between efficient light harvesting and quenching forms to optimize photosynthesis in response to the environment. Several distinct mechanisms, collectively termed "nonphotochemical quenching" (NPQ), provide flexibility in this response. Here we report the isolation and characterization of a mutant, suppressor of quenching 1 (soq1), that has high NPQ even in the absence of photosystem II subunit S (PsbS), a protein that is necessary for the rapidly reversible component of NPQ. The formation of NPQ in soq1 was light intensity-dependent, and it exhibited slow relaxation kinetics and other characteristics that distinguish it from known NPQ components. Treatment with chemical inhibitors or an uncoupler, as well as crosses to mutants known to affect other NPQ components, showed that the NPQ in soq1 does not require a transthylakoid pH gradient, zeaxanthin formation, or the phosphorylation of light-harvesting complexes, and it appears to be unrelated to the photosystem II damage-and-repair cycle. Measurements of pigments and chlorophyll fluorescence lifetimes indicated that the additional NPQ in soq1 is the result of a decrease in chlorophyll excited-state lifetime and not pigment bleaching. The SOQ1 gene was isolated by map-based cloning, and it encodes a previously uncharacterized thylakoid membrane protein with thioredoxin-like and β-propeller domains located in the lumen and a haloacid-dehalogenase domain exposed to the chloroplast stroma. We propose that the role of SOQ1 is to prevent formation of a slowly reversible form of antenna quenching, thereby maintaining the efficiency of light harvesting.
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