a, Image of representative 3-week-old plants grown under CL conditions as in Fig. 3 and then exposed to high light (500 µmol photons m-2 s-1) for 1 week (HL); or cultivated for 4 weeks under continuous light (125 µmol photons m-2 s-1; CONT) or short day conditions (8 h at 125 µmol photons m-2 s-1, 16 h dark; SD). Bar: 1 cm. b,c, Statistical analysis of sets of plants with respect to rosette diameter (b) and fresh weight (c) grown as in panel a. Data are presented as the mean ± s.d. for n = 3 (HL) or 4 (CONT and SD) independent experiments indicated in circles and statistical differences to WT according to a two-tailed Student’s t-test (P ≤ 0.05) are provided.