Distinct species turnover patterns shaped the richness of antibiotic resistance genes on eight different microplastic polymers
文献类型： 外文期刊
作者： Zhang, Weihong 1 ; Geng, Jun 1 ; Sun, Mengge 1 ; Jiang, Chunxia 1 ; Lin, Hui 6 ; Chen, Haiyang 7 ; Yang, Yuyi 1 ;
作者机构： 1.Chinese Acad Sci, Hubei Key Lab Wetland Evolut & Ecol Restorat, Wuhan Bot Garden, Wuhan 430074, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Nanjing Inst Geog & Limnol, Key Lab Lake & Watershed Sci Water Secur, Nanjing 210008, Peoples R China
4.Chinese Acad Sci & Hubei Prov, Danjiangkou Wetland Ecosyst Field Sci Observat & R, Wuhan 430074, Peoples R China
5.China Univ Geosci, Sch Ocean Sci, Beijing 100083, Peoples R China
6.Zhejiang Acad Agr Sci, Inst Environm Resource Soil & Fertilizers, Key Lab Managing Biot & Chem Threats Qual & Safety, Hangzhou 310021, Peoples R China
7.Beijing Normal Univ, Coll Water Sci, Beijing 100875, Peoples R China
关键词： Biodegradable and non-biodegradable micro; plastics; Antibiotic resistance genes; Opportunistic pathogenic bacteria; Lacustrine plastisphere; Ecological risks
期刊名称：ENVIRONMENTAL RESEARCH （ 影响因子：7.7； 五年影响因子：7.7 ）
ISSN： 0013-9351
年卷期： 2024 年 259 卷
页码：
收录情况： SCI
摘要： Elucidating the formation mechanism of plastisphere antibiotic resistance genes (ARGs) on different polymers is necessary to understand the ecological risks of plastisphere ARGs. Here, we explored the turnover and assembly mechanism of plastisphere ARGs on 8 different microplastic polymers (4 biodegradable (bMPs) and 4 nonbiodegradable microplastics (nMPs)) by metagenomic sequencing. Our study revealed the presence of 479 ARGs with abundance ranging from 41.37 to 58.17 copies/16S rRNA gene in all plastispheres. These ARGs were predominantly multidrug resistance genes. The richness of plastisphere ARGs on different polymers had a significant correlation with the contribution of species turnover to plastisphere ARGs beta diversity. Furthermore, polymer type was the most critical factor affecting the composition of plastisphere ARGs. More opportunistic pathogens carrying diverse ARGs on BMPs (PBAT, PBS, and PHA) with higher horizontal gene transfer potential may further magnify the ecological risks and human health threats. For example, the opportunistic pathogens Riemerella anatipestifer, Vibrio campbellii, and Vibrio cholerae are closely related to human production and life, which were the important potential hosts of many plastisphere ARGs and mobile genetic elements on BMPs. Thus, we emphasize the urgency of developing the formation mechanism of plastisphere ARGs and the necessity of controlling BMPs and ARG pollution, especially BMPs, with ever-increasing usage in daily life.
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