Fig. 3.

Loss of GID1a reduces transpiration under water deficit conditions. (A) Transpiration rate in M82 and gid1a under water limited conditions. After 2 weeks of irrigation on the lysimeters, irrigation was gradually reduced (50% of the previous day’s transpiration, automatically controlled by the system for each plant separately) until it was completely stopped. Transpiration rate in selected representative days during the water deficit treatment are presented; 2 d before the beginning of the water-deficit treatment (−2) and 2, 6, and 10 d into the drought treatment. Values are means of eight plants ±SE. (B) Recovery of M82 and gid1a from the drought treatment. Recovery was evaluated by the time required for each plant to return to the level of transpiration measured just before the beginning of the water-deficit treatment. Values are means of eight plants ±SE. Numbers above columns represent the percentage of maximum transpiration (see above).