Overexpression of CaAPX Induces Orchestrated Reactive Oxygen Scavenging and Enhances Cold and Heat Tolerances in Tobacco

Figure 4

Activities of antioxidant enzyme in plants under temperature stress. (a) SOD activities of transgenic and WT plants under 4°C temperature stress. (b) SOD activities of transgenic and WT plants under 38°C temperature stress. (c) POD activities of transgenic and WT plants under 4°C temperature stress. (d) POD activities of transgenic and WT plants under 38°C temperature stress. (e) CAT activities of transgenic and WT plants under 4°C temperature stress. (f) CAT activities of transgenic and WT plants under 38°C temperature stress. L1, L2, and L3: 3 lines of CaAPX transgenic tobacco. WT: wild type. FW: fresh weight.

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