Figure 2.

In Vivo Analysis of Chlorophyll Fluorescence.

(A) Dependence of the NPQ on the light intensity in the wild type (WT), pgr5, trx m124-2, and pgr5 trx m124-2. NPQ values were recorded 2 min after a shift to each light intensity.

(B) Time courses of the NPQ induction and relaxation. NPQ values were measured during the actinic illumination with 62 µmol photons m^–2 s^–1 for 20 min, followed by relaxation in the dark for 8 min. Each data point represents the mean ± sd (n = 5 independent plants).