作者
George Westmeijer, Maliheh Mehrshad, Stephanie Turner, Linda Alakangas, Varvara Sachpazidou, Carina Bunse, Jarone Pinhassi, Marcelo Ketzer, Mats Åström, Stefan Bertilsson, Mark Dopson
发表日期
2022/1/11
期刊
Communications biology
卷号
5
期号
1
页码范围
37
出版商
Nature Publishing Group UK
简介
The deep biosphere is an energy constrained ecosystem yet fosters diverse microbial communities that are key in biogeochemical cycling. Whether microbial communities in deep biosphere groundwaters are shaped by infiltration of allochthonous surface microorganisms or the evolution of autochthonous species remains unresolved. In this study, 16S rRNA gene amplicon analyses showed that few groups of surface microbes infiltrated deep biosphere groundwaters at the Äspö Hard Rock Laboratory, Sweden, but that such populations constituted up to 49% of the microbial abundance. The dominant persisting phyla included Patescibacteria, Proteobacteria, and Epsilonbacteraeota. Despite the hydrological connection of the Baltic Sea with the studied groundwaters, infiltrating microbes predominantly originated from deep soil groundwater. Most deep biosphere groundwater populations lacked surface …
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