Fig. 7.

Descriptive model of the mechanism of cold stress reducing GSH by inhibiting ATP hydrolysis in rice leaves. The γ-EC and Gly is converted into GSH by Glutathione synthetase (GSH-S) in plants. This pathway requires energy consumption (ATP). Under cold stress, ATP content significantly increases in the cold susceptible cultivar, indicating that it is not inhibited by stress. In contrast, cold stress inhibits the hydrolysis of ATP, resulting in low GSH accumulation, thereby reducing available energy. γ-EC, γ-glutamylcysteine; Gly, Glycine