Figure 2: KEA3 accelerates qE relaxation on transition from dark to low light. | Nature Communications

Figure 2: KEA3 accelerates qE relaxation on transition from dark to low light.

From: Ion antiport accelerates photosynthetic acclimation in fluctuating light environments

Figure 2

(a) NPQ induction in detached leaves of 3-week-old Col-0, kea3-1 and kea3-1 expressing KEA3.2-GFP (KEA3.2) or overexpressing KEA3CPA2-GFP (oeKEA3CPA2) was measured at 70 μmol photons m−2 s−1 after 30 min dark incubation. (b) The extra NPQ in kea3 mutants requires PsbS. NPQ induction in detached leaves of 2-week-old psbs and kea3-1 psbs mutant plants was measured as in a. (c) The higher transient NPQ in kea3 decreases the PSII quantum yield (ΦII), and oeKEA3CPA2 show transiently increased ΦII. ΦII was calculated from the same experiment as a. Asterisks indicate time points where kea3-1 or oeKEA3CPA2 differ significantly from WT (*0.01<P<0.04, **0.001<P<0.01, ***P<0.001, Student’s t-test). (a–c) Error bars represent s.e.m. (n=6).

Back to article page