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Metabolite pools in leaves and roots of nontransformed (WT) and transgenic potato overexpressing cysE. Young (solid bar) and mature (hatched) leaves and roots (white) were sampled from plants grown with 1 mm sulfate for 3 weeks. NAS (A), OAS (B), Cys (C), glutathione (D), total S (E), and sulfate (F) were determined. Data are the means ± se of five separate plant samples except OAS and NAS, which are the means ± se of three separate plant samples.
