Nitrate reduction nitrogenase activity in Spirillum lipoferum1.

摘要: Nitrate and nitrite reduction under aerobic, microaerophillic, anaerobic conditions was demonstrated in Spirillum lipoferum (ATCC 29145). Nitrite did not accumulated during assimilatory nitrate air. The produced dissimilatory the medium but cells. On exposure of bacteria to anaerobiosis, a low initial rate (lag) followed by accelerated rates accumulation. A 3-h pretreatment, absence nitrate, void lag phase. No reductase activity (NRA) developed presence chloramphenicol. data suggest that induction NRA S. required protein synthesis. Anaerobic N2-ase greatly stimulated nitrate. time course coincidental with pattern nitrate-stimulated inidcating relationship exists between these two processes.