Details

Autor(en) / Beteiligte

• Zou, Hai-Yan
• He, Liang-Ying
• Gao, Fang-Zhou
• Zhang, Min
• Chen, Shuai
• Wu, Dai-Ling
• Liu, You-Sheng
• He, Lu-Xi
• Bai, Hong
• Ying, Guang-Guo

Titel

Antibiotic resistance genes in surface water and groundwater from mining affected environments

Ist Teil von

• The Science of the total environment, 2021-06, Vol.772, p.145516, Article 145516

Ort / Verlag

Netherlands: Elsevier B.V

Erscheinungsjahr

2021

Quelle

ScienceDirect

Beschreibungen/Notizen

• Mining activities are known to generate a large amount of mine tailings and acid mine drainage which contain varieties of heavy metals. Heavy metals play an important role in co-selection for bacterial antibiotic resistance. However, the characteristics of antibiotic resistance genes (ARGs) in mining-affected water environments are still unclear. Here we investigated the pollution of metals, profiles of ARGs, mobile genetic elements (MGEs) and microbial community in mining-affected surface water and groundwater. The results showed that in the tested water samples, the concentrations of Zn and Mn were the highest, and Ni was the lowest. Higher abundances of ARGs with great proportion of sulfonamides, chloramphenicols and tetracyclines resistance genes were found in mining-affected water when compared with those without mining activities. Additionally, there were positive correlations between heavy metals (especially Ni, Zn and Mn) and these ARGs. Linear regression analysis suggested that MGEs were positively correlated with ARGs. In addition, total phosphorus was correlated with ARGs (p < 0.05). The microbial community was different between the mining-affected water and the reference (p < 0.05). Proteobacteria, Bacteroidetes and Actinobacteria were dominant phyla in the surface water and groundwater. Network analysis showed that many ARGs were significantly associated with these dominant bacteria, which suggested they might be potential hosts for these ARGs. These findings provide a clear evidence that the mining activities in the study area had a significant impact on surface water and groundwater to different degrees. [Display omitted] •We investigated ARGs and microbial community in mining affected water environments.•Higher abundances of ARGs were found in affected sites than in reference sites.•Heavy metals shifted microbial community compositions in the affected environment.•Mining activities impact on surface water and groundwater to different degrees.