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Arsenic (As) contamination of rice is a major problem for South-East Asia. Effect of selenium (Se) on rice plants exposed to As. Presence of Se decreased As accumulation by 3-fold in roots and 2-fold in shoots as compared to single As exposed plants. Arsenic induced oxidative stress in roots and shoots was significantly ameliorated by Se supplementation. Positive response was found associated with the increased activities of antioxidant enzymes, induced thiolic ligands and phytochelatins in As+Se exposed plants as compared to single As treatment. Selenium supplementation modulated the thiol...