聚烯微塑料在微生物无氧消化过程中对消化性能,微生物群落和抗生素耐药性的影响
Yu Xiao1, Yan Qin1, Xiaoying Jiang1
1College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China.
Bioresource technology
|August 27, 2024
概括
聚烯微塑料 (PP-MPs) 通过改变微生物群落和增加抗生素耐药性基因 (ARGs) 来增强无氧消化器中的甲产量. 这项研究揭示了微塑料对消化过程的影响.
科学领域:
- 环境科学 环境科学
- 微生物学 微生物学
- 生物技术是生物技术.
背景情况:
- 微塑料 (MP) 是新兴的全球污染物,对环境的关注越来越大.
- 了解特定的微塑料类型,如聚烯 (PP),对工程生态系统的影响至关重要.
研究的目的:
- 调查PP-MPs对无氧消化性能的影响.
- 分析微生物社区结构和功能在对PP-MPs的反应中发生的变化.
- 评估PP-MP暴露下抗生素耐药性基因 (ARG) 和移动遗传元素 (MGE) 的变化.
主要方法:
- 用不同度的PP-MPs处理微生物无氧消化器.
- 监测了甲的产量.
- 使用分子技术分析了微生物社区的组成.
- 量化了ARG和MGE的丰富性.
主要成果:
- 添加PP-MPs增加了10.8%的甲产量在300颗/g TSS.
- PP-MPs丰富了关键的乙烯基 (Syntrophobacter, Syntrophorhabdus, Syntrophomonas) 和甲基 (Methanobacterium, Methanosaeta) 微生物群落.
- 特定的ARG (tetX,parC) 和MGE (ISCR1,intI1) 显著丰富,表明水平基因转移增加.
结论:
- 聚烯微塑料可以通过调节微生物联盟来积极影响无氧消化效率.
- PP-MPs在无氧消化器中促进了抗生素耐药性基因的扩散和传播.
- 这些发现凸显了生物处理系统中微塑料污染的复杂生态影响.
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