Tolerance and metabolic response of acetogenic bacteria toward oxygen.
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.
Karnholz
Arno
A
Department of Ecological Microbiology, BITOEK, University of Bayreuth, 95440 Bayreuth, Germany.
Küsel
Kirsten
K
Gössner
Anita
A
Schramm
Andreas
A
Drake
Harold L
HL
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
D003470:Culture Media; D009097:Multienzyme Complexes; D009195:Peroxidase; C023107:NADH oxidase; D009247:NADH, NADPH Oxidoreductases; D019342:Acetic Acid; D010100:Oxygen