Genome-centric metagenomics reveals the host-driven dynamics and ecological role of CPR bacteria in an activated sludge system.

ABSTRACT:

Background

Candidate phyla radiation (CPR) constitutes highly diverse bacteria with small cell sizes and are likely obligate intracellular symbionts. Given their distribution and complex associations with bacterial hosts, genetic and biological features of CPR bacteria in low-nutrient environments have received increasing attention. However, CPR bacteria in wastewater treatment systems remain poorly understood. We utilized genome-centric metagenomics to answer how CPR communities shift over 11 years and what kind of ecological roles they act in an activated sludge system.

Results

We found that approximately 9% (135) of the 1,526 non-redundant bacterial and archaeal metagenome-assembled genomes were affiliated with CPR. CPR bacteria were consistently abundant with a relative

SUBMITTER: Wang Y 

PROVIDER: S-EPMC10031880 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature