Fig. 2. Leaf water potential (A), photosynthesis (B), and stomatal conductance (C) of transgenic (Y3 and B3) and control plants (Xnn) expressed as ratios from random pairing of values of water-deficit and well-watered plants. For water-deficit treatment D1 through D5, plants were watered with 100, 75, 50, 25, and 0% of the water needed to fully replenish control plants, respectively. After withholding water for 5 d (2 d after D5), the water-deficient plants were rewatered extensively in the morning, and then gas exchange parameters were measured at 5 h (R0) and the next day (R1). Values are means ± SD, n = 8 for water-deficit treatment, n = 5 for recovery stages.