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Synergistic Effect of Arsenate and Microplastics and its Toxicity Mechanism on Lettuce
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Synergistic effect of arsenate and microplastics and its toxicity mechanism on lettuce
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Researchers investigated the combined effects of arsenate and polystyrene microplastics on lettuce growth. The study found that microplastics adsorbed arsenate from irrigation water and enhanced its uptake by lettuce, with the synergistic effect causing greater oxidative stress and growth inhibition than either contaminant alone.
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Researchers exposed lettuce to LDPE microplastics and imidacloprid pesticide individually and in combination, finding co-exposure caused a 68% reduction in fresh weight — far greater than pesticide alone — with effects including leaf browning, stunted roots, and reduced chlorophyll despite unchanged imidacloprid uptake.
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