title: Pyridine degradation and heterocyclic nitrification by Bacillus coagulans.
abstract: A gram-positive, pyridine-degrading microorganism identified as Bacillus coagulans has been isolated from contaminated soil by enrichment culture technique. Pyridine was used as sole source of carbon, nitrogen, and energy. Bacillus coagulans has a unique potential to reduce nitrogen from aromatic ring to ammonia and subsequently heterotrophically to nitrite and nitrate. The maximum degradation of pyridine was 94.1% within 72 h at 30 degrees C with a 7.57-h doubling time. The study suggests possible existence of aromatic degradation and heterotrophic nitrification in Bacillus coagulans.
authors.affiliation: National Environmental Engineering Research Institute, Madras, India.
authors.forename: B
authors.initials: B
authors.lastname: Uma
authors.forename: S
authors.initials: S
authors.lastname: Sandhya
mesh_terms: D001407:Bacillus / Q000302:isolation & purification / Q000378:metabolism* / Q000648:ultrastructure; D001673:Biodegradation, Environmental; D008855:Microscopy, Electron, Scanning; D009584:Nitrogen / Q000378:metabolism; D010084:Oxidation-Reduction; D011725:Pyridines / Q000737:chemistry / Q000378:metabolism*; D012988:Soil Microbiology; D012989:Soil Pollutants / Q000378:metabolism*
chemical_list: D011725:Pyridines; D012989:Soil Pollutants; D009584:Nitrogen; C023666:pyridine