Metapangenomic investigation provides insight into niche differentiation of methanogenic populations from the subsurface serpentinizing environment, Samail Ophiolite, Oman.

ABSTRACT: Serpentinization reactions produce highly reduced waters that have hyperalkaline pH and that can have high concentrations of H₂ and CH₄. Putatively autotrophic methanogenic archaea have been identified in the subsurface waters of the Samail Ophiolite, Sultanate of Oman, though the strategies to overcome hyperalkaline pH and dissolved inorganic carbon limitation remain to be fully understood. Here, we recovered metagenome assembled genomes (MAGs) and applied a metapangenomic approach to three different Methanobacterium populations to assess habitat-specific functional gene distribution. A Type I population was identified in the fluids with neutral pH, while a Type II and "Mixed" population were identified in the most hyperalkaline fluids (pH 11.63). The core gen

SUBMITTER: Thieringer PH 

PROVIDER: S-EPMC10350532 | biostudies-literature | 2023

REPOSITORIES: biostudies-literature