EFFECT OF NH 4 + ON ACETYLENE REDUCTION (NITROGENASE) IN AZOTOBACTER VINELANDII AND BACILLUS POLYMYXA *

摘要

In vivo acetylene reduction (nitrogenase) is inhibited by NH4+ immediately in Azotobacter vinelandii, but not in Bacillus polymyxa. In addition to the repression of enzyme synthesis, NH4+ has two types of inhibitory effects on acetylene reduction in A. vi