Figure 2

Drought stress tolerance of OsCPK9 -OX and OsCPK9 -RNAi transgenic lines. (A) Photographs of transgenic lines and controls after drought treatment. Three-week-old rice seedlings were deprived of water for 20 or 27 days, followed by 3 days of recovery. Photos of transgenic lines and controls were taken at these time points. (B) Survival rates, chlorophyll, and MDA content of transgenic lines and controls with or without drought treatment. Three-week-old rice seedlings were deprived of water for 27 days, followed by 3 days recovery, then survival rates were calculated. Three-week-old rice seedlings were deprived of water for 15 days and then chlorophyll, and MDA content were measured in leaf samples. Data are means ± SE of four independent experiments. Asterisks indicate significant difference between WT and transgenic lines (*p <0.05; **p <0.01).