Figure 1.

Kinetic deconvolution of NPQ dark relaxation of WT and npq4 leaves. The dark recovery of NPQ was measured in intact leaves of Arabidopsis WT and npq4 mutants upon illumination for 60 min with different intensities of white actinic light: (a) 400, (b) 800, (c) 1200 µmol photons m⁻² s⁻¹. Symbols and error bars show mean ± s.d. (n = 3). Each dataset was fitted with a bi-exponential function NPQ = A_qI + A_qE e^(−t/τqE) + A_qM e^(−t/τqM) (d–f) and the kinetics of qE and qM relaxation were assessed in the different genotypes (table 1).