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Nanoscale polystyrene intensified the microbiome perturbation and antibiotic resistance genes enrichment in soil and Enchytraeus crypticus caused by tetracycline
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Do combined nanoscale polystyrene and tetracycline impact on the incidence of resistance genes and microbial community disturbance in Enchytraeus crypticus?
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Researchers exposed the soil invertebrate Enchytraeus crypticus to nanoscale polystyrene combined with tetracycline and found increased abundance of multiple antibiotic resistance genes — particularly MLSB and multidrug ARGs — along with disrupted gut microbial communities, with ARG diversity not fully recovering 14 days after exposure ended.
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Soil invertebrates (Enchytraeus crypticus) were exposed to microplastics and tetracycline alone and in combination; combined exposure promoted greater shifts in gut microbiome composition and higher levels of antibiotic resistance genes than either stressor alone, suggesting microplastics exacerbate antibiotic resistance spread in soil.
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This review examined a decade of research on microplastics as carriers of antibiotic resistance genes in terrestrial ecosystems, showing that plastic surfaces enhance gene transmission and soil abundance while exerting toxic effects on microorganisms, plants, and animals. The coupling of microplastic pollution with antibiotic resistance spread represents a compounding public health threat with implications for food safety and the global antimicrobial resistance crisis.
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