Analogs of Precambrian microbial communities formed de novo in Caucasian mineral water aquifers

Zavarzina, D.; Maslov, A.; Merkel, A.; Kharitonova, N.; Klyukina, A.; Baranovskaya, E.; Baydariko, E.; Potapov, E.; Zayulina, K.; Bychkov, A.; Chernyh, N.; Bonch-Osmolovskaya, E.; Gavrilov, S.

Авторы: Zavarzina DG, Maslov AA, Merkel AY, Kharitonova NA, Klyukina AA, Baranovskaya EI, Baydariko EA, Potapov EG, Zayulina KS, Bychkov AY, Chernyh NA, Bonch-Osmolovskaya EA, Gavrilov SN
Журнал: mBio
Год издания: 2024
Издательство: American Society for Microbiology
Местоположение издательства: United States
DOI: 10.1128/mbio.02831-24
Аннотация: The microbiome of deep continental aquifers is considered the most slowly evolving part of the biosphere. The Yessentukskoye Mineral Water Basin (YMWB), located in the pre-Caucasus region, contains three closely spaced but distinct aquifers, the Upper Cretaceous, the Lower Cretaceous, and the Upper Jurassic, which represent unique objects for subsurface biosphere research due to gas-hydrogeochemical and thermal anomalies of the area. We analyzed the geological and hydrogeochemical parameters of the three aquifers and a recharge area of the YMWB and investigated their microbial communities using metagenomic and cultivation-based approaches within a long-term survey. Correlation analysis of the obtained data revealed stable and highly stratified microbial communities inhabiting four distinct ecosystems. Their structure and the metabolic traits of their prokaryotic populations were similar to those presumed to have dominated the Earth’s biosphere during several critical periods of its evolutionary history, that is, the Early Archean, the period of banded iron formations accumulation, and the Great Oxidation Event. Among the YMWB strata, the Upper Jurassic aquifer, supersaturated with CO2, influenced by magmatic activity, and highly enriched with thermophilic autotrophic hydrogenotrophic acetogens, turned out to be the first described modern ecosystem based on the primary production by a process predicted to support the Last Universal Common Ancestor (LUCA). The characterization of the YMWB microbial communities reveals a contemporary model environment of the early stages of Earth’s development and thus contributes to the understanding of the evolutionary traits in microbial populations that may have played a critical role in the formation of the modern biosphere.
Добавил в систему: Маслов Алексей Анатольевич

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Analogs of Precambrian microbial communities formed de novo in Caucasian mineral water aquifersстатья

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