Leaf transpiration rate and leaf water potential in STTM166 plants. A, The surface temperature of wild-type and STTM166 leaves. Scale bar, 2 cm. B, The transpiration rates of wild-type and STTM166 plants grown in a paddy field. C, The stomatal conductance of STTM166 and wild-type plants under normal growth conditions in paddy field. D, The leaf water potential of STTM166 and wild-type plants under normal and drought-stress conditions. Data are presented as means ± sd (n = 5 in B–D). **P < 0.01, two-tailed, two-sample Student’s t test.