Fig. S3.

Comparison of anthocyanin contents in arr1,10,12 and WT plants. (A) The arr1,10,12 and WT plants were grown and exposed to drought stress as described in Fig. 1A. At the indicated time points, plants were harvested for measurement of leaf RWC. Error bars represent SEs (n = 5). (B) Anthocyanin content of the arr1,10,12 and WT plants exposed to drought as described in A and in those grown under well-watered conditions. Error bars represent SEs (n = 4). Asterisks indicate significant differences between the genotypes under well-watered control or drought conditions as determined by a Student’s t test analysis (*P < 0.05; **P < 0.01; ***P < 0.001). DW, dry weight.