The Effect of Dissimilatory Manganese Reduction on Lactate Fermentation and Microbial Community Assembly.

ABSTRACT: Fermentation and dissimilatory manganese (Mn) reduction are inter-related metabolic processes that microbes can perform in anoxic environments. Fermentation is less energetically favorable and is often not considered to compete for organic carbon with dissimilatory metal reduction. Therefore, the aim of our study was to investigate the outcome of the competition for lactate between fermentation and Mn oxide (birnessite) reduction in a mixed microbial community. A birnessite reducing enrichment culture was obtained from activated sludge with lactate and birnessite as the substrates. This enrichment was further used to test how various birnessite activities (0, 10, 20, and 40 mM) affected the rates of fermentation and metal reduction, as well as community composition. Increased birnessite ac

SUBMITTER: Novotnik B 

PROVIDER: S-EPMC6531920 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature