Microbial potential for carbon and nutrient cycling in a geogenic supercritical carbon dioxide reservoir.

ABSTRACT: Microorganisms catalyze carbon cycling and biogeochemical reactions in the deep subsurface and thus may be expected to influence the fate of injected supercritical (sc) CO₂ following geological carbon sequestration (GCS). We hypothesized that natural subsurface scCO₂ reservoirs, which serve as analogs for the long-term fate of sequestered scCO₂ , harbor a 'deep carbonated biosphere' with carbon cycling potential. We sampled subsurface fluids from scCO₂ -water separators at a natural scCO₂ reservoir at McElmo Dome, Colorado for analysis of 16S rRNA gene diversity and metagenome content. Sequence annotations indicated dominance of Sulfurospirillum, Rhizobium, Desulfovibrio and four members of the Clostridiales family. Genomes extracted f

SUBMITTER: Freedman AJE 

PROVIDER: S-EPMC5518199 | biostudies-literature | 2017 Jun

REPOSITORIES: biostudies-literature