碳酸在阿尔卑斯山冰山洞穴中沉了极端性细菌
Nóra Tünde Lange-Enyedi1,2, Péter Németh3,4, Andrea K Borsodi2,5
1Institute for Geological and Geochemical Research, HUN-REN Research Centre for Astronomy and Earth Sciences, Budaörsi út 45, Budapest, 1112, Hungary.
Scientific reports
|February 1, 2024
概括
在奥布斯坦斯冰洞的微生物群落有助于碳酸盐降水. 这些在寒冷环境中壮成长的心理友好细菌,通过其代谢过程影响矿物质的形成.
科学领域:
- 微生物学 微生物学
- 地质微生物学的生物.
- 环境科学 环境科学
背景情况:
- Prokaryotes 在生物地球化学循环中起着至关重要的作用,对洞穴环境进行了广泛的研究.
- 碳酸盐岩中的冰洞在微生物组成和功能方面没有得到充分的研究.
- 有限的数据存在于冷地下息地中的 prokaryotic 多样性和活动.
研究的目的:
- 为了研究奥布斯坦斯冰洞中的细菌和考古社区.
- 分析培养细菌菌株的代谢潜力,重点关注碳酸盐沉.
- 了解微生物生命在极寒环境中对碳酸盐形成的贡献.
主要方法:
- 下一代安普利康测序用于细菌和古生物的分类学概况.
- 在低温 (10°C) 下培养细菌菌株并进行代谢分析.
- 显微镜和化学分析以表征微生物诱导的碳酸盐沉物.
主要成果:
- 确定的主导细菌种类包括未培养的Burkholderiaceae,Brevundimonas,Flavobacterium,Alkanindiges,Polaromonas,Pseudonocardia,Blastocatella,以及未培养的Pyrinomonadaceae,Sphingomonadaceae,Gemmatimonadaceae和Longimicrobiaceae的成员.
- 这些已识别的种类主要是心理耐受性/心理友好性和化学性有机性.
- 培养的菌株显示出显著的碳酸盐沉,受Mg2+/Ca2+比率和温度的影响,在几周内观察到晶体形成.
结论:
- 在奥布斯坦斯冰洞中的多样化的 prokaryotic 社区积极促进碳酸盐降水.
- 微生物活动在冷地下环境中的地质微化学过程中发挥着重要作用.
- 这些发现突出了微生物生命在水的可用性和温度的极限上的生物地质化学意义.
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