ABA, Pro, soluble sugar, and SOD activity are increased in transgenic rice. A to D, ABA content (A), Pro content (B), soluble sugar (C), and SOD activities (D) in the leaves of 2-week-old transgenic and ZH11 control plants with or without drought treatments. Values are mean ± sd of three independent experiments (*P < 0.05, **P < 0.01). FW, Fresh weight.