多环芳对生态组装过程和共发生模式的影响在土壤细菌和真菌群落之间有所不同
Jun Zhang1, Daijing Yu1, Liwei Zhang1
1School of Forensic Medicine, Shanxi Medical University, Jinzhong 030600, Shanxi, China; Shanxi Key Laboratory of Forensic Medicine, Jinzhong 030600, Shanxi, China.
Journal of hazardous materials
|December 6, 2024
概括
多环芳 (PAH) 显著影响土壤微生物群落. 这项研究揭示了细菌和真菌对PAH污染的明显反应,细菌受到环境的影响,真菌受到空间的影响.
科学领域:
- 环境微生物学 环境微生物学
- 土壤生态学 土壤生态学
- 生物地质化学生物地质化学
背景情况:
- 多环芳 (PAH) 是广泛存在的土壤污染物,具有有害影响.
- 微生物群落,包括细菌和真菌,对于PAH降解至关重要.
- 在受PAH污染的土壤中了解微生物群落的不同组合是有限的.
研究的目的:
- 在受PAH污染的地区调查土壤细菌和真菌群落的生物地理模式.
- 区分管理细菌和真菌群落的组装机制 (确定性与随机性).
- 评估PAH污染对微生物社区结构和共发生网络的影响.
主要方法:
- 来自中国山西炼厂附近的玉米农田和荒地土壤采样.
- 细菌和真菌社区组成和分布的分析.
- 应用零建模来推断社区组装过程.
- 在PAH度和微生物社区组合之间的相关性分析.
主要成果:
- 在大多数土壤样本中检测到严重的PAH污染.
- 观察到不同的微生物生物地理模式:环境因素塑造了细菌群落,而空间因素影响了真菌群落.
- 一致的选择主导了细菌组合,分散限制控制了真菌组合.
- 度的PAH显著影响微生物共发生网络,对细菌群体的影响更大.
结论:
- 细菌和真菌群体对PAH污染和组装过程表现出不同的反应.
- 氧化污染作为一种选择性压力,改变微生物群体的结构和相互作用.
- 与PAH降解相关的特定微生物种群可以作为污染水平的潜在生物标志物.
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