<i>OsVTC1-1</i> plays an important role in the response of salt-tolerant rice varieties.

<p>(A), phenotypes of F1 hybrid rice plants under salt stress. NJ16 represents salt-tolerant rice landrace Ningjing16; NJ16/RI1-3 represents F1 hybrid of Ningjing16 with <i>OsVTC1-1</i> RNA interference line RI1-3; NJ16/ZH17 represents F1 plants of Ningjing16 and Zhonghua17, which were used as controls. ZD13 indicates the salt-tolerant rice landrace Zhongdao13; ZD13/RI1-3 indicates F1 plants of Zhongdao13 and <i>OsVTC1-1</i> RI1-3; ZD13/ZH17 indicates F1 plants of Zhongdao13 and Zhonghua17, which were used as controls. Ningjing16 and Zhongdao13 were used as the female parents. Control indicates that plants were grown under normal conditions, and NaCl indicates that four-week rice seedlings were treated with 150 mM NaCl solution for another ten days. (B), percentage survival rates (Percentage is the ratio of number of plants with green new leaves to number of total plants) of F1 hybrid rice seedlings after salt stress treatment in (A). About 50~60 seedlings were uses in each experiment. The bars represent SD (±) of two independent assays, and the asterisk indicates results significantly different from control (**P<0.01 and *P<0.05). Significance was evaluated using the <i>t</i>-test.