Journal
FEBS LETTERS
Volume 580, Issue 11, Pages 2797-2802Publisher
WILEY
DOI: 10.1016/j.febslet.2006.04.018
Keywords
acclimation; charge recombination; irradiance; PSII; temperature
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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 for S(2)Q(B)(-) and S(2)Q(A)(-) charge recombinations within photosystem II reaction centers. This is discussed in terms of photoprotection through non-radiative charge recombination. (c) 2006 Published by Elsevier B.V. on behalf of the Federation of European Biochemical Societies.
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