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Sulfide (A), Cys (B), GEC (C), GSH (D), and SAM (E) concentrations (micromoles gram−1 fresh weight [FW]) in shoots (white bars) and roots (gray bars) of tomato plants subjected to varying nutritional stress. Data are means ± sd of six independent replications run in triplicate. Statistics are the same as in Figure 1. C, Control; D, dual deficiency; F, Fe deficiency; S, S deficiency.
