53 research outputs found
Nitrogen-fixing growth in continuous culture of a strain of Rhizobium sp. isolated from stem nodules on Sesbania rostrata
Positron annihilation studies of recrystallization in the subsurface zone induced by friction in magnesiumâeffect of the inhomogeneity on measured positron annihilation characteristics
The influence of nitrate, water potential and oxygen tension on nitrogen fixation in detached pea roots
Nitrate dependent anaerobic acetylene-reduction and nitrogen-fixation by soybean bacteroids
Bacteroids isolated from nodules produced by one strain of Rhizobium japonicum (CC705) had strong nitrate-reducing activity and reduced CâHâ to CâHâ and Nâ to NHâ anaerobically with nitrate. Bacteroids of another strain (CB1809) were much less active nitrate reducers and reduced little CâHâ anaerobically. Nitrite, which accumulated in the medium in anaerobic assays, was an inhibitor of CâHâreduction in both aerobic and anaerobic conditions. Succinate, at about 25 mM, stimulated both nitrate reduction and CâHâ reduction under aerobic conditions. Glucose stimulated CâHâ reduction up to 120 mM but nitrate reduction was inhibited in the presence of glucose. In terms of electrons transferred, the aerobic pathway appeared to be about 2.5 times more efficient than the anaerobic pathway in supporting nitrogenase activity of CC705 bacteroids
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