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Functional divergence of LhcSR and PsbS in zeaxanthin-mediated non-photochemical quenching.

The New phytologist - 1 Jun 2026

Beraldo Claudia, Bagchus Cleo, Verhoeven Dana, Bellan Alessandra, Gerotto Caterina, Wientjes Emilie, van Amerongen Herbert, Morosinotto Tomas, Alboresi Alessandro

Abstract excerpt

To protect photosystem II from excess light, non-photochemical quenching (NPQ) dissipates excess energy as heat. NPQ relies on trigger proteins, LhcSR in algae and PsbS in vascular plants, and the light-regulated xanthophyll cycle, which interconverts violaxanthin and zeaxanthin through the opposite activities of violaxanthin de-epoxidase and zeaxanthin epoxidase (ZEP). Despite extensive research, the molecular...

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Bryopsida
Light
Light-Harvesting Protein Complexes
Oxidoreductases
Photosynthesis

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Photosystem II Protein Complex

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PMID: 41964359
DOI: 10.1111/nph.71176
PMCID: PMC13150299

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PubMed metadata and Literature Corpus relationships. Corpus snapshot updated 31 Aug 2026.

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Functional divergence of LhcSR and PsbS in zeaxanthin-mediated non-photochemical quenching.PMID 41964359Read ↗

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PsbS-specific zeaxanthin-independent changes in fluorescence emission spectrum as a signature of energy-dependent non-photochemical quenching in higher plants.Semantic proximity Read ↗

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