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Metagenomics Analysis Reveals the Microbial Communities, Antimicrobial Resistance Gene Diversity and Potential Pathogen Transmission Risk of Two Different Landfills in China
oleh: Shan Wan, Min Xia, Jie Tao, Yanjun Pang, Fugen Yu, Jun Wu, Shanping Chen
| Format: | Article |
|---|---|
| Diterbitkan: | MDPI AG 2021-05-01 |
Deskripsi
In this study, we used a metagenomic approach to analyze microbial communities, antibiotic resistance gene diversity, and human pathogenic bacterium composition in two typical landfills in China. Results showed that the phyla Proteobacteria, Bacteroidetes, and Actinobacteria were predominant in the two landfills, and archaea and fungi were also detected. The genera <i>Methanoculleus</i>, <i>Lysobacter</i>, and <i>Pseudomonas</i> were predominantly present in all samples. <i>sul</i>2, <i>sul</i>1, <i>tet</i>X, and <i>ade</i>F were the four most abundant antibiotic resistance genes. Sixty-nine bacterial pathogens were identified from the two landfills, with <i>Klebsiella pneumoniae</i>, <i>Bordetella pertussis</i>, <i>Pseudomonas aeruginosa</i>, and <i>Bacillus cereus</i> as the major pathogenic microorganisms, indicating the existence of potential environmental risk in landfills. In addition, KEGG pathway analysis indicated the presence of antibiotic resistance genes typically associated with human antibiotic resistance bacterial strains. These results provide insights into the risk of pathogens in landfills, which is important for controlling the potential secondary transmission of pathogens and reducing workers’ health risk during landfill excavation.