Figure 6.

Behavior of wild-type (Col-0) and mterf10, -11 and -12 mutant plants under moderate heat stress of 30°C. (A) To score the phenotypes under moderate heat stress, plants were first grown for 3 weeks under normal growth conditions (100 μmol photons m⁻²s⁻¹, 22°C) and then exposed to 30°C for 7 days. (B) The maximum quantum yield of PSII (F_v/F_m) of Col-0 and mterf mutant plants was determined after 3 and 7 days (d) in 30°C. The data are shown as mean values ± SD from 8 to 10 different leaves.