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Microplastics Change the Safe Production Ability of As-Stressed Rice (Oryza Sativa L.) by Regulating the Antioxidant Capacity, as Absorption, and Distribution in Rice
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Microplastics change the safe production ability of arsenic-stressed rice (Oryza sativa L.) by regulating the antioxidant capacity, arsenic absorption, and distribution in rice
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Researchers studied how polyethylene and biodegradable polylactic acid microplastics interact with arsenic contamination to affect rice growth and food safety. They found that the type of microplastic influenced how arsenic accumulated in different parts of the rice plant, with some combinations increasing arsenic levels in the edible grain. The findings raise concerns about microplastic contamination in agricultural soils altering how toxic metals are taken up by food crops.
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Rice plants exposed to high-density polyethylene and polystyrene microplastics suffered reduced growth, lower photosynthesis, and oxidative stress, but treating the root zone with the amino acid L-arginine partially reversed these harms. The finding matters because microplastic contamination of agricultural soils threatens crop yields, and natural compounds like L-arginine could offer low-cost ways to protect food production.
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