多样化的微生物组功能,有限的时间变化和沉积物和花岩深地下研究实验室内的大量基因组保护
Yuki Amano1,2, Rohan Sachdeva3, Daniel Gittins3
1Nuclear Fuel Cycle Engineering Laboratories, Japan Atomic Energy Agency, Ibaraki, 4-33 Muramatsu Tokai, Japan. amano.yuki@jaea.go.jp.
Environmental microbiome
|December 19, 2024
概括
日本地下研究实验室的深层生物圈微生物组显示出不同地点令人惊的遗传重叠,这表明它们迅速分散或过去的地下水流. 这种稳定性对地下储存应用有影响.
科学领域:
- 地质微生物学的生物.
- 深层生物圈研究研究 深层生物圈研究
- 地下微生物学的表面.
背景情况:
- 地下研究实验室 (URL) 提供了深层生物圈的见解.
- 网址对于研究微生物对地下CO2,H2和核废物储存的影响至关重要.
- 这项研究研究了在日本的Horonobe和Mizunami URL中在140400米深度的地下水微生物组.
研究的目的:
- 描述地下水微生物组的组成和功能,在深层地下环境.
- 评估微生物群落的稳定性和基因型在不同地质环境中的重叠.
- 了解微生物社区结构对地下应用的影响.
主要方法:
- 从定义的间隔 (140400米) 采集地下水微生物多年的样本.
- 对超过90%的检测到的生物体进行基因组草案的重建.
- 在URL之间对微生物组组成,功能和基因型多样性的比较分析.
主要成果:
- 霍罗诺贝和米祖纳米的微生物组不相似,反映了不同的宿主岩类型 (沉积岩与花岩).
- 关键的代谢功能,如代谢,二氧化碳固定,和/硫酸盐的减少是共同的两个网站.
- 在Horonobe URL中观察到显著的基因型重叠,这表明分散或过去的水文事件.
- 在其他全球地下环境中发现了相关物种,这表明它们分布广泛.
结论:
- 在沉积岩中观察到微生物群的稳定性,横向分离的地点具有令人惊的基因型重叠.
- 通过缓慢的地下水流或过去的水文制度分散可能解释社区的均性.
- 微生物组和地化学稳定性是地下储存应用的关键考虑因素.
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