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Kinetics of NPQ of Wild Type Arabidopsis and Mutants.
In vivo NPQ of chlorophyll fluorescence was measured with a PAM fluorimeter, and it was induced by saturating actinic light (1200 μE m−2 s−1, white bar) on wild-type and mutant leaves. Dark-relaxation kinetic was followed (black bar). The values of NPQ were calculated as described in Methods. Values are the average of measurements performed on four distinct leaves.
