FIGURE 4.

Overexpression of AtUGT76C2 in rice enhanced salt and drought tolerance in the adult transgenic plants. (A) For salt treatment, 2-week-old rice seedlings were exposed to 200 mM NaCI for 7 days. For drought treatment, the plants were dried for 1 week, and then allowed for recovery for 7 days. (B) Survival rates of the transgenic and the control rice after salt and drought treatment. (C) Electrolyte leakage of the plants after salt treatment. (D) Water loss rate of detached leaves during 4 h. Proline (E) and soluble sugar (F) content under PEG and NaCI treatments. Each assay was done at three independent biological replicates. Asterisks indicate significant differences between the wild type and the overexpression lines evaluated with Student’s t-test (*P < 0.05, **P < 0.01).