Figure 2.
Photosynthetic properties of bfa3 and wild-type plants. A and B, pmf across the thylakoid membrane. The pmf was determined by the slowly relaxing phase of the ECS signal after illuminating the leaves with 89 (A) and 754 (B) μmol photons m−2 s−1 light for 10 min. The pmf was further partitioned into the pH gradient component (ΔpH) and the electric field component (ΔΨ). C–F, Light intensity dependence of NPQ (C), relative ETR (D), 1-qL (E), and oxidation of the donor side of PSI (F). ETR is presented as the maximum value of ФPSII × light intensity in the wild type (100%). All values are means ± sd of three independent plants (n = 3).