在混合抗生素压力下的除过程过渡期间解读抗生素耐药性变异:组装过程和驱动因素
Hao Tan1, Lin Wang1, Yangwu Chen2
1Key Laboratory of Environmental and Applied Microbiology, Chengdu Institute of Biology, Chinese Academy of Sciences, 610041 Chengdu, China; Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, 610041 Chengdu, China; University of Chinese Academy of Sciences, 100049 Beijing, China.
Bioresource technology
|November 4, 2024
概括
这项研究揭示了抗生素耐药性基因 (ARG) 在废水处理方法之间如何变化. 环境因素,如溶解氧和化物水平显著影响ARG及其宿主.
科学领域:
- 环境微生物学环境微生物学
- 污水处理 污水处理 污水处理
- 抗生素耐药性 抗生素耐药性
背景情况:
- 抗生素耐药性,包括环境中的所有抗生素耐药性基因 (ARG),在废水处理研究中至关重要.
- 在完全化-脱化和捷径化-脱化之间的过渡期间了解ARG的变化是有限的.
研究的目的:
- 为了研究抗生素耐药性的变化,在从完全到捷径化-脱化过程的转变期间.
- 确定关键的环境驱动因素和ARG的细菌宿主.
主要方法:
- 分析了269个向基因亚型和108个持续存在的基因.
- 对抗生素暴露后ARG和移动遗传元素丰度的评估.
- 抗体变异,环境变量 (溶解氧,酸盐积累) 和细菌群体之间的相关性分析.
主要成果:
- 在所有样本中,总共存在108个ARG.
- 混合抗生素迅速增加了ARG和移动遗传元素的丰富性.
- 溶解氧和酸盐积累率是抵抗体变异的主要驱动因素.
- 34个细菌系,包括像Branchymonas,Rhodobacter和Thauera这样的脱剂,被确定为潜在的ARG宿主.
结论:
- 环境变量和细菌群体组成显著影响废水处理中的抗生素耐药性.
- 调节环境因素提供了一种控制抗生素耐药性的策略.
- 脱细菌被确定为抗生素耐药性基因的关键储存库.
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