作为对冲量输入的反应,功能冗余维持了碳化合物污染的陆海连续体中的微生物群体
Elise Châtillon1, Aurélie Cébron2, François Rigal1
1Universite de Pau et des Pays de l'Adour, E2S UPPA, CNRS, IPREM, Pau, France.
Environmental pollution (Barking, Essex : 1987)
|August 12, 2023
概括
沿海沉积物中的土生态输入不会改变碳化合物去除或基因丰富性,但会改变微生物基因变异,表明功能冗余. 这种冗余性维持了受污染的陆海过渡区中的微生物社区结构.
科学领域:
- 环境微生物学环境微生物学
- 沿海生态系统的动态
- 生物地质化学生物地质化学
背景情况:
- 海洋沿海沉积物中的碳化合物 (HC) 污染构成生态风险.
- 了解微生物对陆海界面的反应对于生态系统管理至关重要.
- 地质输入可以改变沿海环境中的生物地球化学过程.
研究的目的:
- 调查土著投入对HC污染的沿海沉积物中的微生物功能潜力的影响.
- 评估陆海连续动态如何影响碳化合物降解和微生物社区结构.
- 识别与土著输入相关的功能指标和微生物网络变化.
主要方法:
- 开发模拟陆海连续性的微观世界.
- 使用DNA-array技术评估微生物的功能潜力,包括HC降解.
- 分析碳化合物去除,功能基因丰富性,基因变异 (GVs) 组成和共发生网络.
主要成果:
- 原性输入没有影响HC去除或整体功能基因丰富度.
- 观察到基因变异 (GVs) 组成的显著变化,表明功能冗余.
- 硫酸盐减少,脱和多芳香降解的功能指标随着土著投入而增加.
- 土生态输入重组了微生物的功能共发生网络,增加了复杂性并揭示了基石GVs.
结论:
- 功能冗余,由GV转移驱动,在HC污染的陆海连续带中,在维持微生物社区结构方面发挥着关键作用.
- 原输入改变微生物的功能潜力和网络组织,而不会影响HC降解效率.
- 这些发现为监测和管理受陆地活动影响的沿海环境提供了宝贵的见解.
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