title: Acclimation to temperature and irradiance modulates PSII charge recombination.
abstract: 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.
authors: Department of Biology and The Biotron, University of Western Ontario, London, Canada N6A 5B7.
authors: A G
authors: AG
authors: Ivanov
authors: P V
authors: PV
authors: Sane
authors: M
authors: M
authors: Krol
authors: G R
authors: GR
authors: Gray
authors: A
authors: A
authors: Balseris
authors: L V
authors: LV
authors: Savitch
authors: G
authors: G
authors: Oquist
authors: N P A
authors: NP
authors: Hüner