New insights into marine group III Euryarchaeota, from dark to light.

ABSTRACT: Marine Euryarchaeota remain among the least understood major components of marine microbial communities. Marine group II Euryarchaeota (MG-II) are more abundant in surface waters (4-20% of the total prokaryotic community), whereas marine group III Euryarchaeota (MG-III) are generally considered low-abundance members of deep mesopelagic and bathypelagic communities. Using genome assembly from direct metagenome reads and metagenomic fosmid clones, we have identified six novel MG-III genome sequence bins from the photic zone (Epi1-6) and two novel bins from deep-sea samples (Bathy1-2). Genome completeness in those genome bins varies from 44% to 85%. Photic-zone MG-III bins corresponded to novel groups with no similarity, and significantly lower GC content, when compared with previously descri

SUBMITTER: Haro-Moreno JM 

PROVIDER: S-EPMC5437922 | biostudies-literature | 2017 May

REPOSITORIES: biostudies-literature