微塑料类别显著影响废水细菌分类学组成和抗菌素耐药性基因
Tam Thanh Tran1, Kabelo Stephans Stenger2, Marte Strømmen1
1Norwegian Research Centre AS (NORCE), Nygårdstangen, 5838 Bergen, Norway.
Microorganisms
|February 26, 2025
概括
废水中的微塑料可能会增加抗菌素耐药性 (AMR) 基因. 特定的塑料类型和老化会影响细菌群落和AMR,废水处理厂 (WWTP) 不能完全减少这些基因.
科学领域:
- 环境微生物学环境微生物学
- 抗微生物耐药性 (AMR) 是一种
- 废水处理技术 废水处理技术
背景情况:
- 污水处理厂 (WWTP) 可以集中病原体并促进抗菌素耐药性 (AMR).
- 废水中的塑料碎片是AMR基因传播的潜在载体.
- 了解微塑料与细菌的相互作用对于管理AMR至关重要.
研究的目的:
- 研究不同类型的微塑料对细菌群落的影响.
- 评估微塑料对废水中AMR基因丰度的影响.
- 为了比较挪威和南非废水中的这些影响.
主要方法:
- 微观宇宙实验使用五种制造的微塑料类型和两个岩石聚合物的控制.
- 材料的人工老化使用紫外线或过氧化.
- 在废水中进行化,然后进行核酸提取,针对特定AMR基因的qPCR (blaFOX,blaMOX) 和16S rRNA基因测序 (MinION).
主要成果:
- 微塑料类型显著影响了细菌社区结构,观察到明显的聚类.
- 与岩石对照相比,Acinetobacter物种与塑料材料有很强的关联.
- 过氧化老化改变了微生物组成;AMR基因丰度因塑料类型和位置而异,WWTPs显示出有限的减少.
结论:
- 特定的微塑料类型和老化过程可以塑造废水中的细菌群落和AMR概况.
- 研究的废水处理过程不足以消除AMR基因.
- 需要进一步的研究,以了解微塑料在抗菌素耐药性传播中的特定作用,以减轻全球抗菌素耐药性威胁.
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