Carboxydotrophy potential of uncultivated Hydrothermarchaeota from the subseafloor crustal biosphere.

ABSTRACT: The exploration of Earth's terrestrial subsurface biosphere has led to the discovery of several new archaeal lineages of evolutionary significance. Similarly, the deep subseafloor crustal biosphere also harbors many unique, uncultured archaeal taxa, including those belonging to Candidatus Hydrothermarchaeota, formerly known as Marine Benthic Group-E. Recently, Hydrothermarchaeota was identified as an abundant lineage of Juan de Fuca Ridge flank crustal fluids, suggesting its adaptation to this extreme environment. Through the investigation of single-cell and metagenome-assembled genomes, we provide insight into the lineage's evolutionary history and metabolic potential. Phylogenomic analysis reveals the Hydrothermarchaeota to be an early-branching archaeal phylum, branching between the sup

SUBMITTER: Carr SA 

PROVIDER: S-EPMC6775978 | biostudies-literature | 2019 Jun

REPOSITORIES: biostudies-literature