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GSH content (µmol g−1 FW) in leaves (a) and roots (b) and enzymatic activities (U g−1 FW) of GR in leaves (c) and roots (d) and of GPX in leaves (e) and roots (f) of Lactuca sativa contaminated with ACT. Different uppercase letters represent significant differences between different ACT concentrations at the same timepoint, and different lowercase letters represent significant differences between treatment duration for the same ACT concentration.
