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• W4310343108 abstract "Abstract Wanfeng Lake, a highland lake in the upper part of the Pearl River Basin, has long been disturbed by aquaculture and human activities, resulting in the accumulation of antibiotics and antibiotic resistance genes (ARGs), which pose a major threat to humans and animals. In this study, 20 antibiotics, 9 ARGs, 2 mobile genetic elements ( intl1 and intl2 ) and microbial community structure were investigated in Wanfeng Lake. The results of the study showed that the total concentration of antibiotics in surface water was 372.72 ng/L, with ofloxacin (OFX) having the highest concentration (169.48 ng/L), posing a high ecological risk to aquatic organisms. The total concentration of antibiotics in sediments was235.86 ng/g, with flumequine (FLU) having the highest concentration (122.54 ng/g). Thisindicates that the main type of antibiotics in Wanfeng Lake are quinolones. Real-time fluorescence quantitative PCR analysis results of the relative abundance of ARGs in both surface water and sediments showed that sulfonamide resistance genes > macrolide resistance genes > tetracycline resistance genes > quinolone resistance genes, indicating that sulfonamide resistance genes were the dominant type. The metagenomic results showed that the predominant microorganisms in the sediment under the phylum level were Planctomycetes, Proteobacteria, Euryarchaeota and Chloroflexi. Pearson’s correlation analysis showed a significantly positive correlation between antibiotics and environmental factors with ARGs in Wanfeng Lake and a significant positive correlation between antibiotics and ARGs with microorganisms in sediments. This suggests that there is a potential pressure of antibiotics on ARGs, while microorganisms provide the driving force for the evolution and spread of ARGs. This study provides a basis for further research on the occurrence and spread of antibiotics and ARGs in Wanfeng Lake." @default.
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• W4310343108 date "2022-11-29" @default.
• W4310343108 modified "2023-10-05" @default.
• W4310343108 title "Characteristics of antibiotic resistance genes and microbial community distribution in Wanfeng Lake, upper Pearl River, China" @default.
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• W4310343108 doi "https://doi.org/10.21203/rs.3.rs-2240690/v1" @default.
• W4310343108 hasPublicationYear "2022" @default.
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