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Impacts of Cu–pH interactions on TA (sum of ASC and DHA; (A,I)), ASC (B,J) and DHA (C,K) concentrations; ASC redox state (ASC/TA ratio; (D,L)); TG (sum of GSH and GSSG; (E,M)), GSH (F,N) and GSSG (G,O) concentrations; and GSH redox state (GSH/TG ratio; (H,P)) in leaves and roots. Bars represent means ± SE (n = 4). Different letters above the bars indicate a significant difference at p < 0.05.
