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Photoinhibition of the wild type and mutants exposed to HL and low temperature. Kinetics of Fv/Fm decay (PSII photoinhibition) and maximum photoxidizable P700 decay (PSI photoinhibition) were measured on the wild type and mutants. Whole plants were exposed to 550 μmol photons m−2 s−1 at 8°C. Data are expressed as means ± sd (n ≥ 5). Values that are significantly different (P < 0.05) from the wild type are marked with an asterisk (*). t0, Time zero.
