Figure 4.

SEU mediates the regulation of SCL3 by GA signaling. A to C, Expression of SEU::GUS (A) and SCL3::GUS (B and C) in root tips of Col-0 (A and B) and seu-3 (C) seedlings treated with mock, 10 μm GA₃, or 10 μm PAC. Scale bars = 50 μm. D, qRT-PCR analysis of SEU and SCL3 transcript levels in roots of Col-0, ga1, and seu-3 seedlings treated with mock, 10 μm GA₃, or 10 μm PAC. Transcript levels from the mock were set to 1. GAPC (AT3G04120) was chosen as the reference gene. Error bars represent sd of three biological replicates. Bars with different letters are significantly different at P < 0.05, ANOVA.