Detection of Diazotrophy in the Acetylene-Fermenting Anaerobe Pelobacter sp. Strain SFB93.

ABSTRACT: Acetylene (C₂H₂) is a trace constituent of the present Earth's oxidizing atmosphere, reflecting a mixture of terrestrial and marine emissions from anthropogenic, biomass-burning, and unidentified biogenic sources. Fermentation of acetylene was serendipitously discovered during C₂H₂ block assays of N₂O reductase, and Pelobacter acetylenicus was shown to grow on C₂H₂ via acetylene hydratase (AH). AH is a W-containing, catabolic, low-redox-potential enzyme that, unlike nitrogenase (N₂ase), is specific for acetylene. Acetylene fermentation is a rare metabolic process that is well characterized only in P. acetylenicus DSM3246 and DSM3247 and Pelobacter sp. strain SFB93. To better underst

SUBMITTER: Akob DM 

PROVIDER: S-EPMC5561301 | biostudies-literature | 2017 Sep

REPOSITORIES: biostudies-literature