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新型增强网络整合DOM和微生物的转化 (ENITM) 阐明了河口沉积物中的微生物驱动的转化途径

Shiyang Yu¹, Jitao Lv¹, Xindong Ma²

¹State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China.

|December 6, 2025

概括

河口沉积物含有复杂的溶解有机物 (DOM),对碳循环至关重要. 这项研究揭示了环境因素和微生物群落如何推动DOM转变,确定了关键的分子途径.

科学领域:

环境科学环境科学
地质化学地质化学
微生物学微生物学

背景情况:

河口沉积物是重要的有机碳储存库.
了解溶解有机物 (DOM) 的分子组成和转化是河口碳循环的关键.
微生物群落在沉积物中的生物地球化学过程中发挥着重要作用.

研究的目的:

分析DOM和微生物群落的动态,沿着从河流到海洋的连续.
研究环境因素 (盐度,pH,C/N比率) 对DOM和微生物群落的影响.
使用综合网络方法阐明DOM转换的微生物驱动机制.

主要方法:

在河流至海洋梯度的沉积物采样.
溶解有机物 (DOM) 分子组成的分析.
微生物社区分析 (组成,功能,共发生).
通过整合DOM分子转换和微生物 (ENITM) 战略,开发和应用增强型网络.

主要成果:

环境因素在很大程度上影响了沉积物微生物群落和DOM分子组成.
与海洋沉积物相比,河流沉积物中的DOM具有更高的芳香度,平均分子量和分子多样性.
该ENITM战略揭示了微生物对DOM转变的贡献,并确定了潜在的途径.

结论:

微生物群落和环境参数是河口DOM动态的关键驱动因素.
确定了特定的微生物转化途径,包括芳香结构的修改和瓜尼丁的纳入.
埃尼特姆方法为研究微生物在生态系统中自然有机物转化中的作用提供了一种新的策略.

关键词:

16S rRNA 测序的测序方法同时发生的网络网络.溶解的有机物质是有机物质.在FT-ICR MS中使用.潜在的分子转变.从河流到海洋的连续体.

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