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Yan, Changchun; Wang, Fei; Liu, Haijun; Liu, Huafeng; Pu, Shengyan; Lin, Fanyu; Geng, Huanhuan; Ma, Shuai; Zhang, Yiyue; Tian, Zhijun; Chen, Huilun; Zhou, Beihai; Yuan, Rongfang
Environmental research, October 2020, 2020-10-00, Letnik: 189Journal Article
Mine tailing dumps represent significant threats to ecological environments due to the presence of toxic substances. The present work investigated the relationship among microbial activity, the community, antibiotic resistance genes (ARGs) and trace metals in soil surrounding gold mine tailings. Using microbial metabolic activity and high-throughput sequencing analysis, we found the trace metals Cd and Hg could be main factors influencing the microbial community. According to bacterial co-occurrence pattern analysis, the effects of total cadmium and total mercury on bacterial diversity are potentially mediated by influencing bacteria community in the keystone module II. Additionally, most of metal-resistant bacteria belong to Actinobacteria and Proteobacteria, and the metal tolerance suggested to be linked with various functions including replication, recombination and repair, as well as inorganic ion transport and metabolism based on PICRUSt2 analysis. We also found that metals generated by mining activity may trigger the co-selection of antibiotic resistance in the phyla Actinobacteria and Proteobacteria due to co-resistance or cross resistance. Additionally, PLS-PM analysis revealed that metals could indirectly affect ARGs by influencing bacterial diversity in gold mining areas. Display omitted •Cd and Hg could be main factors influencing microbial community.•Most of metal-resistant bacteria belong to Actinobacteria and Proteobacteria.•The microbial mechanisms of adaptation to trace metals was investigated.•Trace metals generated from mining activity affect ARGs through was deciphered.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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in: SICRIS
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