Depth wide distribution and metabolic potential of chemolithoautotrophic microorganisms reactivated from deep continental granitic crust underneath the Deccan Traps at Koyna, India.

ABSTRACT: Characterization of inorganic carbon (C) utilizing microorganisms from deep crystalline rocks is of major scientific interest owing to their crucial role in global carbon and other elemental cycles. In this study we investigate the microbial populations from the deep [up to 2,908 meters below surface (mbs)] granitic rocks within the Koyna seismogenic zone, reactivated (enriched) under anaerobic, high temperature (50°C), chemolithoautotrophic conditions. Subsurface rock samples from six different depths (1,679-2,908 mbs) are incubated (180 days) with CO₂ (+H₂) or HCO₃ ^- as the sole C source. Estimation of total protein, ATP, utilization of NO₃ ^- and SO₄ ^2- and 16S rRNA gene qPCR suggests considerable mic

SUBMITTER: Mandal S 

PROVIDER: S-EPMC9731672 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature