The impact of microplastics on antibiotic resistance genes, metal resistance genes, and bacterial community in aquaculture environment

文献类型： 外文期刊

第一作者： Su, Haochang

作者： Su, Haochang;Xu, Wujie;Hu, Xiaojuan;Xu, Yu;Wen, Guoliang;Cao, Yucheng;Su, Haochang;Xu, Wujie;Hu, Xiaojuan;Xu, Yu;Wen, Guoliang;Cao, Yucheng

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关键词： Microplastics; Antibiotic resistance genes; Metal resistance genes; Bacterial community; Aquaculture

期刊名称：JOURNAL OF HAZARDOUS MATERIALS （ 影响因子：11.3； 五年影响因子：12.4 ）

ISSN： 0304-3894

年卷期： 2025 年 489 卷

页码：

收录情况： SCI

摘要： Microplastics are emerging contaminants. However, their effects on antibiotic resistance genes (ARGs), metal resistance genes (MRGs), and the structure and abundance of bacterial communities, particularly pathogens, in aquaculture environments remains poorly understood. Therefore, this study investigated the effect of microplastics of different sizes on the abundance and distribution of ARGs, MRGs, and bacterial communities in aquaculture environments. The results revealed that, compared with pond water, large microplastics harbored significantly higher ARG abundances, particularly for multidrug-resistant genes; notably, level-I- and -II-risk ARGs were more prevalent on microplastics, highlighting the potential for horizontal gene transfer. Microplastics also exhibited a propensity to aggregate pathogenic bacteria such as Brucella and Pseudomonas, which could pose direct risks to aquatic product safety and public health. Network and differential network analyses revealed significant correlations between bacterial genera and ARG/MRG abundance, particularly on microplastics. Therefore, our findings suggest that microplastics act as vectors for the spread of ARGs, MRGs, and pathogens in aquaculture, potentially leading to the formation of complexes of these materials that threaten ecosystem health and human well-being. This study provides critical insights into the need for targeted management strategies to mitigate microplastic pollution in aquaculture settings.

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