"Sifarchaeota," a Novel Asgard Phylum from Costa Rican Sediment Capable of Polysaccharide Degradation and Anaerobic Methylotrophy.

ABSTRACT: The Asgard superphylum is a deeply branching monophyletic group of Archaea, recently described as some of the closest relatives of the eukaryotic ancestor. The wide application of genomic analyses from metagenome sequencing has established six distinct phyla, whose genomes encode diverse metabolic capacities and which play important biogeochemical and ecological roles in marine sediments. Here, we describe two metagenome-assembled genomes (MAGs) recovered from deep marine sediments off the Costa Rica margin, defining a novel lineage phylogenetically married to "Candidatus Thorarchaeota"; as such, we propose the name "Sifarchaeota" for this phylum. The two Sifarchaeota MAGs encode an anaerobic pathway for methylotrophy enabling the utilization of C₁ to

SUBMITTER: Farag IF 

PROVIDER: S-EPMC8091018 | biostudies-literature | 2021 Apr

REPOSITORIES: biostudies-literature