下面的两个世界:岩石附着和浮游生物体地下地表生物圈的独特微生物战略
Alisha Sharma1, Kirsten Küsel1,2,3, Carl-Eric Wegner1,4
1Aquatic Geomicrobiology, Institute of Biodiversity, Ecology and Evolution, Friedrich Schiller University Jena, Dornburger Strasse 159, Jena, 07743, Germany.
Microbiome
|January 31, 2026
概括
地下水生态系统中的附着微生物比浮游生物更丰富,功能更专业. 这些发现凸显了附着微生物群落在地下生物地化学过程和碳固定中的关键作用.
科学领域:
- 微生物学 微生物学
- 地质化学 地质化学
- 环境科学 环境科学
背景情况:
- 地下水生态系统包含浮游生物和附着的微生物.
- 附着的微生物数量明显超过浮游生物,表明它们在生态系统功能中的关键作用.
- 结合碳酸盐含水层中附着社区的代谢潜力和生态作用尚不清楚.
研究的目的:
- 研究碳酸盐含水层中附着和浮游生物微生物群落之间的差异.
- 了解微生物生活方式 (附着与浮游生物) 塑造的功能和活动概况.
主要方法:
- 从氧化和无氧地下水中的被动样本中采集附着微生物组的样本.
- 与同一水层中的浮游生物群落的现有数据集进行比较.
- 超基因组分析以确定分类学和功能概况 (MAG).
主要成果:
- 微生物的生活方式解释了更多的社区变异,而不是氧化还原条件.
- 附带的社区显示出分类学和功能分离,由蛋白质细菌主导,具有生物膜形成和化学物质自otrophy 的基因.
- 浮游生物群落主要由Cand. 病性细菌和Nitrospirota,表现出较低的功能多功能性.
- 即使在密切相关的MAGs中也观察到特定于生活方式的适应.
结论:
- 附着微生物是地下生物地球化学过程的关键驱动力,因为它们的丰富性和代谢专业化.
- 碳酸盐含水层可能比以前估计的更大的无机碳汇.
- 地下生态系统功能模型应该包含附着的微生物群落.
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