抗生素耐药性基因在建造湿地系统中的垂直分布特征和运输路径
Ling Zhang1, Changzhou Yan2, Ce Wen3
1Key Laboratory of Urban Environment and Health, Fujian Key Laboratory of Watershed Ecology, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; College of Materials Sciences and Engineering, Xinxiang Engineering Research Center for Wastewater Treatment Energy Saving and Emission Reduction, Henan Institute of Technology, Xinxiang 453003, China.
Journal of hazardous materials
|January 23, 2024
概括
建筑湿地可以将抗生素耐药性基因 (ARG) 传播到环境中. 主要通过基板和影响转移ARG,植物在大气扩散中扮演的角色很小.
科学领域:
- 环境科学 环境科学
- 微生物学 微生物学
- 遗传学 遗传学 是一个
背景情况:
- 抗生素耐药性基因 (ARG) 在土壤-植物系统中传播,但它们在建筑湿地中的行为不太了解.
- 由于独特的环境动态,在建筑湿地中ARG的垂直传播和扩散需要进行特殊调查.
研究的目的:
- 探索ARG在建筑湿地生态系统中的垂直分布和传播.
- 确定ARG从建筑湿地传播到周围环境的主要途径和来源.
主要方法:
- 用转基因组分析来确定ARG的丰度和类型.
- 使用Sourcetracker分析来追踪ARG的起源和移动.
- 研究了细菌群体的组成和ARG宿主协会.
主要成果:
- 多种药物ARG构成了检测到的ARG中最大的比例 (24.2%47.5%).
- ARG 档案与细菌社区结构有相似之处,独特的 ARG 和物种在植物中较少流行.
- 植物和大气之间的ARG转移是双向的,但很弱;基板和影响是大气ARG分散的主要贡献者 (59.2%78.6%).
结论:
- 建筑湿地可以作为ARG传播到大气和周围环境的重要来源,主要是通过基板和影响.
- 植物介导的ARG的大气扩散是有限的,叶子附着的ARG来自外部输入.
- 在各种细菌分类学层面上,ARG表现出非特异性宿主选择,强调需要强有力的管理策略,以减轻建筑湿地中的ARG风险.
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