Is PsbS the site of non-photochemical quenching in photosynthesis? | Zendy

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Is PsbS the site of non-photochemical quenching in photosynthesis?

Author(s) -

Krishiyogi

Publication year - 2004

Publication title -

journal of experimental botany

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.616

H-Index - 242

eISSN - 1460-2431

pISSN - 0022-0957

DOI - 10.1093/jxb/eri056

Subject(s) - xanthophyll , non photochemical quenching , photosystem ii , photosynthesis , quenching (fluorescence) , photochemistry , thylakoid , chlorophyll fluorescence , photoinhibition , chemistry , biophysics , photoprotection , fluorescence , chlorophyll , biology , chloroplast , physics , biochemistry , optics , gene , organic chemistry

The PsbS protein of photosystem II functions in the regulation of photosynthetic light harvesting. Along with a low thylakoid lumen pH and the presence of de-epoxidized xanthophylls, PsbS is necessary for photoprotective thermal dissipation (qE) of excess absorbed light energy in plants, measured as non-photochemical quenching of chlorophyll fluorescence. What is known about PsbS in relation to the hypothesis that this protein is the site of qE is reviewed here.

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