Fig. 7.
The electron transport rate through PSII (ETR(II)) and the transient increase in chlorophyll fluorescence of whole cells in the alternative wild type (WT*), ΔpsbO mutant strains, and site-directed mutants. A, ETR(II) was calculated using Dual-PAM software under different photosynthetically active radiations from 0 to 1000 μmol/m2/s (μE), and the data are presented as the mean of three independent experiments. B, The transient rise in fluorescence shown in the enlarged boxes was measured after the actinic light illumination was turned off. ΔpsbO, photosystem II manganese-stabilizing protein (PsbO) knockout mutant.