Metagenome-assembled genome distribution and key functionality highlight importance of aerobic metabolism in Svalbard permafrost.

ABSTRACT: Permafrost underlies a large portion of the land in the Northern Hemisphere. It is proposed to be an extreme habitat and home for cold-adaptive microbial communities. Upon thaw permafrost is predicted to exacerbate increasing global temperature trend, where awakening microbes decompose millennia old carbon stocks. Yet our knowledge on composition, functional potential and variance of permafrost microbiome remains limited. In this study, we conducted a deep comparative metagenomic analysis through a 2 m permafrost core from Svalbard, Norway to determine key permafrost microbiome in this climate sensitive island ecosystem. To do so, we developed comparative metagenomics methods on metagenomic-assembled genomes (MAG). We found that community composition in Svalbard soil horizons shifted marke

SUBMITTER: Xue Y 

PROVIDER: S-EPMC7174036 | biostudies-literature | 2020 May

REPOSITORIES: biostudies-literature