活跃形成的微生物提供了对微数字化 stromatolites 的发展的洞察
Judit Makk1, Ábel Csongor Németh2,3,4, Erika Tóth2
1Department of Microbiology, ELTE Eötvös Loránd University, Pázmány P. Sétány 1/C, 1117, Budapest, Hungary. makk.judit@ttk.elte.hu.
Scientific reports
|February 14, 2025
概括
匈牙利热水井中的现代微生物显示出类似于树岩的结构. 这些生物膜揭示了古代微岩构成和碳酸盐矿化过程的发展.
科学领域:
- 地质地质地质地质地质地
- 微生物学 微生物学
- 天体生物学 天体生物学
背景情况:
- 斯特罗马托石是古老的多层微生物结构,对早期地球生命至关重要,但它们的现代形成不明.
- 化石岩石提供了早期生命的证据,但当代类似物很少见,这限制了我们对它们发展的理解.
研究的目的:
- 研究来自Köröm热井的生物膜的微生物和碳酸盐结构.
- 为了比较观察到的结构与化石的树岩和血栓岩.
- 为了识别与碳酸盐矿化有关的微生物种群.
主要方法:
- 生物膜形态和结构的微观分析.
- 基于16S rRNA基因的amplicon测序用于微生物社区分析.
- 碳酸盐皮质和网络结构的分析.
主要成果:
- 科罗姆热井生物膜 (厚度为3-5厘米,温度为79.2°C) 显示的结构类似于化石化微数字体 stromatolites 和 thrombolites.
- 观察到不同的层:在红色生物膜中垂直导向的纤维矿物质织物 (斯特罗马托利特) 和在绿色生物膜中凝结的半层结构 (血栓质).
- 丰富的微生物种类包括 Bacteroidota, Pseudomonadota, 菌, Hydrogenobacter 和许多未描述的种类,这些种类有助于碳酸盐矿化.
结论:
- 科罗姆热井生物膜是研究微岩形成的独特现代类比.
- 这些发现有助于我们更好地了解涉及斯特罗马托利特和血栓质细胞发展的过程.
- 这项研究强调了各种微生物群落,包括未被描述的种群在生物矿物化中的作用.
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