塑圈在淡水和海洋环境中具有抵抗力的生态系统特异性组成和驱动因素
Jianhong Shi1, Chaoli Sun1, Yinglong Su2
1College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai, 201306, China.
Environmental research
|January 29, 2026
概括
淡水微塑料的抗生素耐药性基因 (ARG) 比海水更为多样化,具有不同的细菌宿主和更高的基因转移潜力,突出了它们在ARG传播中的作用.
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:
- 水生环境中的微塑料培养了独特的微生物群落 (塑层),并可以促进抗生素耐药性基因 (ARG) 的传播.
- 对于不同水生生态系统及其相关细菌宿主中的微塑料上的ARG配置文件,存在有限的系统比较.
研究的目的:
- 进行超基因组数据集的比较元分析,以调查淡水微塑料 (FMP) 和海水微塑料 (SMP) 的ARG概况.
- 确定塑造ARG概况的驱动因素,并比较ARG多样性,丰度和FMP和SMP之间的细菌宿主.
主要方法:
- 来自FMP和SMP的现有元基因组数据集的比较元分析.
- 对ARG概况,细菌群体组成和移动遗传元素的分析.
- 研究ARG,细菌宿主和移动遗传元素之间的相关性.
主要成果:
- 在FMP和SMP上的ARG配置文件与周围水体有显著差异.
- 与SMP相比,FMP显示ARG的多样性和丰度更高.
- 两者共有10个核心ARG,但23个是FMP独有的.
- 细菌群体的组成是ARG概况的主要决定因素.
- FMP表现出更复杂的细菌-ARG共发生模式,包括潜在的致病宿主.
- FMP显示移动遗传元素和ARG之间存在显著的相关性,这表明水平基因转移潜力较高.
结论:
- 淡水微塑料是抗生素耐药性基因的重要储存和传播者.
- 独特的细菌群落和在FMP上增强的水平基因转移潜力有助于增加ARG负担.
- 了解这些动态对于评估和减轻抗生素耐药性的环境风险至关重要.
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