Revealing the full biosphere structure and versatile metabolic functions in the deepest ocean sediment of the Challenger Deep.

ABSTRACT:

Background

The full biosphere structure and functional exploration of the microbial communities of the Challenger Deep of the Mariana Trench, the deepest known hadal zone on Earth, lag far behind that of other marine realms.

Results

We adopt a deep metagenomics approach to investigate the microbiome in the sediment of Challenger Deep, Mariana Trench. We construct 178 metagenome-assembled genomes (MAGs) representing 26 phyla, 16 of which are reported from hadal sediment for the first time. Based on the MAGs, we find the microbial community functions are marked by enrichment and prevalence of mixotrophy and facultative anaerobic metabolism. The microeukaryotic community is found to be dominated by six fungal groups that are characterized for the first time in hadal sediment to

SUBMITTER: Chen P 

PROVIDER: S-EPMC8276468 | biostudies-literature | 2021 Jul

REPOSITORIES: biostudies-literature