Figure 7.

RBG1 overexpression confers abiotic stress tolerance in rice. Rice seedlings at 21 DAI were treated with stress conditions, allowed to recover in 0.5 X Kimura solution for 7 days, and the survival rate (%, number of plants surviving divided by the total number of plants x 100) was determined. (a) Only in the RBG1‐Ox line did new leaves rapidly emerge after recovery from PEG 6000 treatment. (b) Seedlings recovered from drought stress (water withheld for 14 days). Red dot indicates newly grown leaves, and white dot indicates leaves recovered from wilting. (c) Survival rates of seedlings after recovery from heat (42 °C, 4 days), PEG (30% PEG 6000, 18 h) and salt (250 mm NaCl, 4 days) treatments. (d) Overexpression of RBG1 up‐regulates HSPs. RNA samples were extracted from shoots of plants at 35 DAI. Red fonts indicate up‐regulated genes.