Figure 2: Real-time quantitative RT-PCR analysis of OsGas2 expression profiles in rice suspension cells under different stresses.

(a) DTT induced the expression of OsbZIP50 in wild type and OsGas2 RNAi cell lines. Protoplasts were prepared from suspension cells, and treated with 6.4 mM DTT for 18 h at 26–28 °C. (b) OsGAS2 expression in the protoplasts from suspension cells with the treatment of 6.4 mM DTT for different times. (c–e) OsGAS2 expression in 8-day-old seedling roots with the treatment of 4 °C (c), 150 mM NaCl (d), and 40% PEG 6000 (e) for different times. Total RNA was isolated for RT-PCR, and experiments were repeated three times.