Figure 8.
State transition and light harvesting antenna changes in leaves. State transition measurements were performed in untreated (A) and KCl-treated (B) wild-type and mutant leaves. Insets represent state 1 to state 2 transition kinetics. (C) The halftime (t1∕2) of fluorescence relaxation from S1 to S2 was calculated by fitting an exponential decay function on the fluorescence signal shown in insets. (D) Relative values of qS parameter indicate the ability of the chloroplast to adjust electron transfer to changes in light quality. The plotted data are means ±SEM (n = 4–5 plants). Different letters in panels (C,D) indicate statistically significant differences (ANOVA, P < 0.05).