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Photoinactivation of PSII under 1,600 μmol quanta m−2 s−1 in leaves from wild-type (solid symbols) and fad3-2 fad7-2 fad8 mutant (open symbols) plants at 3°C (A) and at 17°C (B) either untreated (● and ○) or after treatment with 1 mm lincomycin (▪ and □). Data are averages of 15 leaves from three independent experiments expressed as a percentage of initial Fv/Fm. Vertical bars represent se of measurement. Initial values for wild-type and mutant leaves were 0.80 and 0.82, respectively.
