title: Tolerance and metabolic response of acetogenic bacteria toward oxygen.
abstract: The acetogens Sporomusa silvacetica, Moorella thermoacetica, Clostridium magnum, Acetobacterium woodii, and Thermoanaerobacter kivui (i) grew in both semisolid and liquid cultivation media containing O(2) and (ii) consumed small amounts of O(2). Low concentrations of O(2) caused a lag phase in growth but did not alter the ability of these acetogens to synthesize acetate via the acetyl coenzyme A pathway. Cell extracts of S. silvacetica, M. thermoacetica, and C. magnum contained peroxidase and NADH oxidase activities; catalase and superoxide dismutase activities were not detected.
authors.affiliation: Department of Ecological Microbiology, BITOEK, University of Bayreuth, 95440 Bayreuth, Germany.
authors.forename: Arno
authors.initials: A
authors.lastname: Karnholz
authors.forename: Kirsten
authors.initials: K
authors.lastname: Küsel
authors.forename: Anita
authors.initials: A
authors.lastname: Gössner
authors.forename: Andreas
authors.initials: A
authors.lastname: Schramm
authors.forename: Harold L
authors.initials: HL
authors.lastname: Drake
mesh_terms: D019342:Acetic Acid / Q000378:metabolism*; D001419:Bacteria / Q000187:drug effects / Q000254:growth & development* / Q000378:metabolism*; D003013:Clostridium / Q000187:drug effects / Q000254:growth & development / Q000378:metabolism; D003470:Culture Media; D009097:Multienzyme Complexes / Q000378:metabolism; D009247:NADH, NADPH Oxidoreductases / Q000378:metabolism; D010100:Oxygen / Q000494:pharmacology*; D009195:Peroxidase / Q000378:metabolism
chemical_list: D003470:Culture Media; D009097:Multienzyme Complexes; D009195:Peroxidase; C023107:NADH oxidase; D009247:NADH, NADPH Oxidoreductases; D019342:Acetic Acid; D010100:Oxygen