Figure 1.

Stomatal conductance and leaf surface temperatures of the cyp707a mutants. A, Stomatal conductance of wild-type and cyp707a plants. Stomatal conductance was measured with the intact 4-week-old plants of wild type, cyp707a mutants under 22°C, RH 60% condition. At least six leaves were measured in each experiment and stomatal conductance is shown by an average with se from four experiments. B and C, Leaf surface temperatures of nonstress plants under well-watered conditions. Plants were grown on soil under well-watered conditions (22°C, RH 75%) for 4 weeks. B, Leaf surface temperature in cyp707a mutant. At least four plants were used in each experiment. Leaf surface temperature is shown by an average with se from seven experiments. C, Typical thermal images of rosette leaves in cyp707a mutants. A lowercase letter in A and B indicates a significant difference judged by Student's t test; a, b, and c indicate the significant difference (P < 0.01) relative to wild type, cyp707a1-1 mutant, and cyp707a3-1 mutant, respectively. An asterisk indicates the significant difference when less stringent cutoff value was used (P < 0.05).