FIGURE 3.
Phenotypes of wild-type and ZmpsbA-transgenic tobaccoplants in response to drought stress. (A) Drought tolerance of potted plants of wild-type and ZmpsbA-OE tobacco. Four-week-old WTand transgenic OE (OE-8 and OE-11) plants were grown in soil in pots for 11 day without watering. (B) Fresh weight of 11-day-drought-stressed wild-type and ZmpsbA-OE plants. Values are mean ± SE, n = 12. (C) Chlorophyll content in 11-day-drought-stressed wild-type and ZmpsbA-OE plants. Values are mean ± SE, n = 12. In both (B,C), statistical analysis was performed using ANOVA test (P < 0.05) and significant differences between wild-type and OE lines are indicated by different letters.