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Acclimation to temperature and irradiance modulates PSII charge recombination
Author(s) -
Ivanov A.G.,
Sane P.V.,
Krol M.,
Gray G.R.,
Balseris A.,
Savitch L.V.,
Öquist G.,
Hüner N.P.A.
Publication year - 2006
Publication title -
febs letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.593
H-Index - 257
eISSN - 1873-3468
pISSN - 0014-5793
DOI - 10.1016/j.febslet.2006.04.018
Subject(s) - non photochemical quenching , xanthophyll , photoprotection , photosystem ii , quenching (fluorescence) , photochemistry , recombination , chemistry , photosynthesis , biophysics , biology , physics , fluorescence , optics , biochemistry , gene
Acclimation of wild type and the chlorina F2 mutant of barley to either high light or low temperature results in a 2‐ to 3‐fold increase in non‐photochemical quenching which occurred independently of either energy‐dependent quenching (qE), xanthophyll cycle‐mediated antenna quenching or state transitions. Results of in vivo thermoluminescence measurements used to address this conundrum indicated that excitation pressure regulates the temperature gap forS 2Q B ‐andS 2Q A ‐charge recombinations within photosystem II reaction centers. This is discussed in terms of photoprotection through non‐radiative charge recombination.