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Effect of melatonin application on (A) glutathione content and (B) redox status in tea leaves under normal and cold stress conditions. Mel, melatonin. GSH, reduced glutathione. GSSG, oxidized glutathione. Each data point presents the mean of six replicates (± S.D. (standard deviation)). Means denoted by different letters are significantly different (p < 0.05) based on the Tukey’s test.
