Figure 8.

FHY3 and FAR1 regulate stomatal movement and confer drought tolerance. A, Representative images of stomata. Values below the images are quantification of the stomatal aperture. Values are means ± sd; n = 20. Bar = 10 μm. B, Water loss from detached plants. Three-week-old plants of various genotypes were measured at different periods of time. Values are means ± sd; n = 3. C, Reduced drought tolerance of fhy3 and far1 mutant plants. Three-week-old soil-grown seedlings were subjected to dehydration by withholding water for 2 weeks and then rewatered normally for 3 d. Three independent assays were performed with similar results, and representative images are shown. WT, Wild type.