Journal
JOURNAL OF EXPERIMENTAL BOTANY
Volume 56, Issue 411, Pages 375-382Publisher
OXFORD UNIV PRESS
DOI: 10.1093/jxb/eri056
Keywords
Arabidopsis; chlorophyll fluorescence; light harvesting; mutant; non-photochemical quenching; photosynthesis; PsbS; zeaxanthin
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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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