Fig. 6.

Phenotypes of the pmARI12:ARI12-GFP IIB1 and K8 lines and their cop1-4 double mutants with and without chronic UV-B exposure. Approximately 14 day old plants were exposed to white light and daily supplemented for 1 h with HFR UV-B (4 μmol m⁻² s⁻¹) for 15 days. (A) Representative images of IIB1 plants after 15 days of UV-B exposure and the corresponding controls. The images of the K8 plants are in the Supplementary Fig. 6. (B) Rosette diameter of white light (WL) only and daily supplemented with UV-B (WL + UV-B). (C, D) Growth parameters normalized to the white light only controls of rosette diameters and dry mass. Error bars represent standard errors. The letters above the error bars represents significant differences between samples. Identical letters indicate no significant difference (p ≤ 0.05).