Figure 3.

Accumulation of PDX1 protein in wild-type (Ler) and uvr8-2 leaves after 12 and 36 h of solar UV exposure as determined by western blot. Levels of RbcL were used to indicate equal protein loading among samples. Means of relative quantities of PDX1 scaled to wild-type UV 0 at 12 h are plotted, with se estimated for models fitted in each time point (n = 3). Significant differences (P ≤ 0.05) among the UV treatments for the expression of PDX1 after 36 h are represented with different letters. Greenhouse samples (GH) were not included in the statistical analysis; they were used to compare PDX1 induction in greenhouse and field conditions.