Phenotypic analyses of Arabidopsis hy5 mutant seedlings/plants overexpressing OsbZIP48. A, Phenotypes of 3-d-old white light-grown wild-type (WT), hy5, OsbZIP48OE, and OsbZIP48;hy5 seedlings. B and C, Hypocotyl lengths of 3- and 6-d-old white light (200 μmol m−2 s−1)-grown wild-type, hy5, OsbZIP48OE, and OsbZIP48;hy5 seedlings. D and E, VGI of roots of 3-d-old wild-type, hy5, and OsbZIP48;hy5 seedlings. F and G, Cotyledon opening angle in response to white light. H, Altered gravitropic set angle in siliques of Arabidopsis hy5 mutant plants. Data presented are means ± se, n = 15 plants in each case. Statistically significant differences (*, P < 0.05 and **, P < 0.005) were identified by Dunnett’s test using the wild type as a control for overexpression transgenics and the hy5 mutant as a control for OsbZIP48;hy5 transgenics in B and C and the hy5 mutant as a control in E and G.