Fig. 9From: Heterotrimeric G-protein α subunit (LeGPA1) confers cold stress tolerance to processing tomato plants (Lycopersicon esculentum Mill)ROS (H2O2 and O2−) accumulation in WT and transgenic tomato plants exposed to cold stress. a H2O2 levels. b O2− content. Uniformly sized 6-week-old tomato plants were subjected to a 5-day cold stress exposure at 4 °C. Leaves that were the second and third from the top were assessed. Data are the means and SDs from triplicate samples. *P < 0.05 and **P < 0.01Back to article page