Fig. 1

Expression of AtPLC9 improves the basic tolerance of rice. a. Fourteen-day-old rice (WT and transgenic lines OE-7, OE-9 and OE-10) grown in Hoagland’s solution under normal conditions (28 °C) were used as controls. b. Seven-day-old rice (WT, OE-7, OE-9 and OE-10) grown in Hoagland’s solution under normal conditions (28 °C) were shifted to 45 °C for 15 min HS treatment and then returned to normal conditions (28 °C) for another 7 days. c. Survival rate of WT, OE-7, OE-9 and OE-10 after HS. Each value is the mean ± SE, n = 3. d. Relative ion leakage of plants after HS treatment. Each value is the mean ± SE, n = 3. e. Chlorophyll content of seedlings after HS; 0.1 g of fresh tissue was used in each experiment. Each value is the mean ± SE, n = 3. Student’s t-test was used to calculate P values. ***p < 0.001, **p < 0.01, *p < 0.05, statistics was analysed between OE-7/− 9/− 10 vs WT. Bars (a and b) = 1 cm