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Dark stress tolerance test in the wild-type (WT) and transgenic plants. (A) Leaf senescence phenotype of WT and transgenic lines after dark treatment. (B–D) Total chlorophyll content, ion leakage rate and malondialdehyde (MDA) content of different genotypes. Using Student’s t-test, asterisks indicate statistically significant differences (* p < 0.05; ** p < 0.01). Data are shown as mean ± SD from three independent experiments.
