Comparison of the drought tolerance of the Arabidopsis response regulator arr1,10,12 and WT plants. (A) Two-week-old arr1,10,12 and WT plants were transferred to soil in an alternate order and grown for an additional week. (B) Three-week-old plants were exposed to a drought treatment, and plants were photographed 16 d after withholding of water after inflorescences were removed. (C) Photograph was taken after 3 d of rewatering. (D) The arr1,10,12 and WT plants were grown in an alternate order for 37 d in parallel under well-watered control conditions.