title: Rhizobium sp. strain ORS571 grows synergistically on N2 and nicotinate as N sources.
abstract: Rhizobium sp. strain ORS571 conducts synergistic, free-living N2 fixation and nicotinate oxidation. Explicitly, ORS571 is able to fix N2 aerobically because 6-OH-nicotinate acts as an intracellular O2 sink. Because 6-OH-nicotinate oxidation is mandatory for aerobic, free-living N2 fixation and because the synergistic processes yield ammonium from substrates (as the nitrogen source for growth), ORS571 is not a diazotroph.
mesh_terms: D005650:Fumarates / Q000378:metabolism; D009154:Mutation; D009525:Niacin / Q000378:metabolism*; D009539:Nicotinic Acids / Q000378:metabolism; D009584:Nitrogen / Q000378:metabolism*; D009586:Nitrogen Fixation; D000644:Quaternary Ammonium Compounds / Q000378:metabolism; D012231:Rhizobium / Q000254:growth & development / Q000378:metabolism*
chemical_list: D005650:Fumarates; D009539:Nicotinic Acids; D000644:Quaternary Ammonium Compounds; D009525:Niacin; C032005:fumaric acid; C046300:6-hydroxynicotinic acid; D009584:Nitrogen