湖泊塑层作为人类纪新生物种群:潜在的病原体殖民和独特的微生物功能
Chenye Xu1, Chun Hu2, Jiawei Lu2
1College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China.
Journal of hazardous materials
|October 7, 2023
概括
淡水中的微塑料 (MPs) 拥有独特的微生物群落,改变元素循环并藏植物病原体. 这些塑层生态系统与浮游生物群落有很大不同.
科学领域:
- 环境微生物学环境微生物学
- 生态毒理学 生态毒理学
- 淡水生态学 淡水生态
背景情况:
- 微塑料 (MP) 在淡水中的分布不均,导致不同的微生物群落.
- 塑圈的生态作用,特别是在代谢途径和元素循环中,尚不清楚.
研究的目的:
- 调查泰湖湖中的MPs上的塑层的微生物组成和功能潜力.
- 为了比较塑圈社区与浮游生物微生物社区的生态特征.
主要方法:
- 来自太湖15个采样地点的国会议员的收集.
- 超基因组学分析以确定微生物的分类学组成和功能特征.
- 塑层社区与浮游生物社区的比较.
主要成果:
- 主要是纤维聚乙烯二甲的MPs被广泛传播并被特定的细菌 (Bacteroidia,Alpha-Proteobacteria,Bacilli) 殖民,而Verrucomicrobiae则被耗尽.
- 塑表现出植物病原体的丰富,以及氨基酸代谢,二次代谢物生物合成和甘氨酸代谢的功能基因过度表现.
- 观察到元素循环的显著变化,包括固定/化减少和化/酸盐减少,以及硫酸盐减少和硫氧化增加.
- 塑球微生物群落主要由随机过程形成,与主导浮游生物群落的决定性过程形成鲜明对比.
结论:
- 塑层代表了淡水环境中的独特的人为生态系统.
- 在水生生态系统中,MPs显著影响微生物社区结构,功能和元素循环.
- 独特的生态机制控制着塑层和浮游生物微生物群落.
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