Article

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

Department of Plant and Microbial Biology, University of California, Berkeley, CA 94720-3102, USA.
Journal of Experimental Botany (Impact Factor: 5.79). 02/2005; 56(411):375-82. DOI: 10.1093/jxb/eri056
Source: PubMed

ABSTRACT 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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