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来自环境压力类比的微生物提供了对欧洲高压地下海洋可能存在的生命的见解

Alvaro Del Moral¹, Dominic Siggs¹, Michael C Macey¹

¹AstrobiologyOU, School of Environment, Earth and Ecosystem Sciences, Open University, Milton Keynes, United Kingdom.

Frontiers in microbiology

|March 2, 2026

概括

来自地球巴斯克湖的微生物是在高压下培养的,模拟了欧洲的海洋条件. 这项研究表明微生物生命可以适应外星海洋环境,推动了对地球以外生命的搜索.

科学领域:

天体生物学天体生物学
地质微生物学的生物.
行星科学行星科学

背景情况:

欧罗巴的地下海洋可能存在适宜居住的条件.
评估欧罗巴的可居住性需要将海洋化学与基于地球的类似物进行整合.
现有的类似物往往缺乏欧洲海洋的高压条件.

研究的目的:

调查微生物适应高压欧洲海洋条件的情况.
将微生物与能够在类似于欧罗巴的压力下生存的陆地模拟物分离出来.
推进对外星海洋潜在生物标志的理解.

主要方法:

使用的巴斯克湖号. 2作为欧罗巴冰-海洋界面的地化学类比.
在模拟的欧洲海洋环境中从模拟地点培养的微生物.
在连续升高的压力 (0.2,10,20,30MPa) 下化培养.

主要成果:

隔离了一个微生物,Pseudodesulfovibrio sp. OU_01,在30 MPa. 的情况下.
隔离物显示了99.1%的16S rRNA基因序列同质性与Pseudodesulfovibrio aespoeensis.
来自环境压力模拟站点的微生物生长在高压下模拟欧罗巴的上层海洋.

结论:

来自陆地类似地点的微生物可以适应类似于欧洲海洋的高压环境.
这项研究提供了在模拟欧洲海洋压力下这种适应的第一个证据.
这些发现支持了欧洲地下海洋中生命的潜力,并指导了未来的天体生物学探索.

关键词:

天体生物学天体生物学生物签名生物签名它们是极端动物.可居住性可居住性冰冷的月亮冰冷的月亮海洋世界的海洋世界.

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