Metabolic diversity within the globally abundant Marine Group II Euryarchaea offers insight into ecological patterns.

ABSTRACT: Despite their discovery over 25 years ago, the Marine Group II Euryarchaea (MGII) remain a difficult group of organisms to study, lacking cultured isolates and genome references. The MGII have been identified in marine samples from around the world, and evidence supports a photoheterotrophic lifestyle combining phototrophy via proteorhodopsins with the remineralization of high molecular weight organic matter. Divided between two clades, the MGII have distinct ecological patterns that are not understood based on the limited number of available genomes. Here, I present a comparative genomic analysis of 250 MGII genomes, providing a comprehensive investigation of these mesophilic archaea. This analysis identifies 17 distinct subclades including nine subclades that previously lacked reference

SUBMITTER: Tully BJ 

PROVIDER: S-EPMC6336850 | biostudies-literature | 2019 Jan

REPOSITORIES: biostudies-literature