Figure 7.

Replenishment of POD to the RNAi lines (RNAi-5 and RNAi-7) enhanced chilling tolerance. A, Endogenous POD activity of the RNAi-5 and RNAi-7 plants incubated with water or POD solution for 12 h. B, Electrolyte leakage of chilling-treated RNAi-5 and RNAi-7 plants preincubated with water or POD solution. Asterisks indicate significant differences between the water treatment and POD treatment (**P < 0.01, ***P < 0.001). C, H₂O₂ accumulation in leaves of chilling-treated RNAi-5 and RNAi-7 plants preincubated with water or POD solution. [See online article for color version of this figure.]