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. 2016 Mar 7;171(1):522–529. doi: 10.1104/pp.15.01886

Figure 5.

Figure 5.

Relationships between the extent of CEF and the photoinhibition sensitivity in three different Symbiodinium strains. A, Effects of high temperature on PSII photoinhibition. The cells were preincubated at 25°C (left) and 33°C (right) for 1 h in the dark and were subsequently exposed to light at 500 µmol photons m−2 s−1. The maximum quantum yield of PSII, i.e. Fv/Fm, was measured at each time point after dark incubation for 10 to 15 min. The asterisks indicate statistically significant differences compared with the corresponding data from Mf1.05b (*P < 0.05 and **P < 0.01, Student’s t tests). B, Effects of elevated temperatures on the P700+ reduction rate. The cells were incubated at temperatures ranging from 25°C to 36°C for 15 min in the dark before the measurements. DCMU was subsequently added, and the rate constant of P700+ reduction was taken as demonstrated in Figure 1. The values are presented as means ± sd from three independent experiments.