Fig. 3

Total proton motive force of Wt and the Δzl mutant. Electrochromic shift (ECS) of the carotenoid absorption spectrum was measured upon exposure to different light intensities, without (a) or with (b) the addition of DCMU. All the experiment was performed in biological replicates (n = 3). Statistical analysis was performed using Student’s t test (*p < 0.05)