Diversity and Genomic Characterization of a Novel Parvarchaeota Family in Acid Mine Drainage Sediments.

ABSTRACT: Recent genome-resolved metagenomic analyses of microbial communities from diverse environments have led to the discovery of many novel lineages that significantly expand the phylogenetic breadth of Archaea. Here, we report the genomic characterization of a new archaeal family based on five metagenome-assembled genomes retrieved from acid mine drainage sediments. Phylogenomic analyses placed these uncultivated archaea at the root of the candidate phylum Parvarchaeota, which expand this lesser-known phylum into two family levels. Genes involved in environmental adaptation and carbohydrate and protein utilization were identified in the ultra-small genomes (estimated size 0.53-0.76 Mb), indicating a survival strategy in this harsh environment (low pH and high heavy metal content). The detectio

SUBMITTER: Luo ZH 

PROVIDER: S-EPMC7779479 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature