Metagenomic survey of the microbiome of ancient Siberian permafrost and modern Kamchatkan cryosols.

ABSTRACT: In the context of global warming, the melting of Arctic permafrost raises the threat of a reemergence of microorganisms some of which were shown to remain viable in ancient frozen soils for up to half a million years. In order to evaluate this risk, it is of interest to acquire a better knowledge of the composition of the microbial communities found in this understudied environment. Here, we present a metagenomic analysis of 12 soil samples from Russian Arctic and subarctic pristine areas: Chukotka, Yakutia and Kamchatka, including nine permafrost samples collected at various depths. These large datasets (9.2 × 10¹¹ total bp) were assembled (525 313 contigs > 5 kb), their encoded protein contents predicted, and then used to perform taxonomical assignments of bacterial, archaeal

SUBMITTER: Rigou S 

PROVIDER: S-EPMC10117733 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature