Niche partitioning of methane-oxidizing bacteria along the oxygen-methane counter gradient of stratified lakes.

ABSTRACT: Lakes are a significant source of atmospheric methane, although methane-oxidizing bacteria consume most methane diffusing upward from anoxic sediments. Diverse methane-oxidizing bacteria form an effective methane filter in the water column of stratified lakes, yet, niche partitioning of different methane-oxidizing bacteria along the oxygen-methane counter gradient remains poorly understood. In our study, we reveal vertical distribution patterns of active methane-oxidizing bacteria along the oxygen-methane counter gradient of four lakes, based on amplicon sequencing analysis of 16S rRNA and pmoA genes, and 16S rRNA and pmoA transcripts, and potential methane oxidation rates. Differential distribution patterns indicated that ecologically different methane-oxidizing bacteria occupied the meth

SUBMITTER: Mayr MJ 

PROVIDER: S-EPMC6908591 | biostudies-literature | 2020 Jan

REPOSITORIES: biostudies-literature