Multi-Component Antioxidative System and Robust Carbohydrate Status, the Essence of Plant Arsenic Tolerance.

In leaves, however, an increasing trend was found in both genotypes at 30 μg l −1 , though a significant 1.5-fold increase was found only in WIS.

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The ratios between reduced and oxidized glutathione (glutathione:glutathione disulphide; GSH:GSSG) showed a trend to gradual decreases in both arsenic treatments and both genotypes ( Figure 5 D,E), significant in WIS leaves and roots, while in SYL, the decrease appeared solely in roots of the higher As dose but less pronounced than in tolerant WIS.

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