纳米塑料使寄生虫感染和未感染宿主中的达芬尼亚微生物群多样化和重塑
Vanderville Villegas1, Amruta Rajarajan2, Elisabeth Funke2
1Leibniz Institute of Freshwater Ecology and Inland Fisheries (IGB), Berlin, Germany; Institute of Biology, Freie Universität Berlin, Germany.
Environmental pollution (Barking, Essex : 1987)
|June 24, 2025
概括
纳米塑料 (NP) 显著改变了大夫尼亚大菌的微生物群,较小的NP比寄生虫感染引起更大的转变. 这些发现凸显了水生环境中纳米塑料的生态风险.
科学领域:
- 环境科学 环境科学
- 微生物学 微生物学
- 生态毒理学 生态毒理学
背景情况:
- 纳米塑料 (NP) 是新兴的环境污染物.
- 与宿主相关的微生物组对于水生动物的健康和生态动态至关重要.
- NP与生物压力因素 (如寄生虫) 之间的相互作用会影响宿主微生物群.
研究的目的:
- 为了研究聚烯纳米塑料 (NP) 和寄生虫感染对大夫尼亚大菌的微生物群的影响.
- 确定NP的大小和度如何影响微生物群的多样性和组成.
- 评估NP和寄生虫感染对达芬尼亚菌群的综合影响.
主要方法:
- 大夫尼亚大暴露于50nm和100nm聚烯NP的1mg/L和5mg/L.
- 这些生物被酵母寄生虫Metschnikowia bicuspidata感染.
- 用16S rRNA基因测序分析了肠道和身体组织的微生物组.
主要成果:
- 高度的50nmNP显著增加了肠道和身体组织中的细菌丰富度.
- 暴露于NP引起的微生物群变化超过了寄生虫感染引起的变化.
- NP的大小和度对达芬尼亚微生物群的影响比寄生虫感染更大,50nm NP导致了社区组成的明显变化.
结论:
- 暴露于纳米塑料,特别是更小的尺寸和更高的度,显著改变了大夫尼的大型微生物群.
- 纳米塑料对微生物群的影响比寄生虫感染更为明显.
- 这些发现强调了纳米塑料在水生生态系统中的潜在生态后果,因为它们对宿主相关微生物群落的影响.
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