Methane-fed microbial microcosms show differential community dynamics and pinpoint taxa involved in communal response.

ABSTRACT: We report observations on the dynamics of bacterial communities in response to methane stimulus in laboratory microcosm incubations prepared with lake sediment samples. We first measured taxonomic compositions of long-term enrichment cultures and determined that, although dominated by Methylococcaceae types, these cultures also contained accompanying types belonging to a limited number of bacterial taxa, methylotrophs and non-methylotrophs. We then followed the short-term community dynamics, in two oxygen tension regimens (150 μM and 15 μM), observing rapid loss of species diversity. In all microcosms, a single type of Methylobacter represented the major methane-oxidizing partner. The accompanying members of the communities revealed different trajectories in response to different oxygen te

SUBMITTER: Oshkin IY 

PROVIDER: S-EPMC4409156 | biostudies-literature | 2015 May

REPOSITORIES: biostudies-literature