Novel Psychrophiles and Exopolymers from Permafrost Thaw Lake Sediments.

ABSTRACT: Thermokarst lakes are one of the most abundant types of microbial ecosystems in the circumpolar North. These shallow basins are formed by the thawing and collapse of ice-rich permafrost, with subsequent filling by snow and ice melt. Until now, permafrost thaw lakes have received little attention for isolation of microorganisms by culture-based analysis. The discovery of novel psychrophiles and their biomolecules makes these extreme environments suitable sources for the isolation of new strains, including for potential biotechnological applications. In this study, samples of bottom sediments were collected from three permafrost thaw lakes in subarctic Québec, Canada. Their diverse microbial communities were characterized by 16S rRNA gene amplicon analysis, and subsamples were cultured for t

SUBMITTER: Finore I 

PROVIDER: S-EPMC7563700 | biostudies-literature | 2020 Aug

REPOSITORIES: biostudies-literature