title: Nitrogenase activity of Rhizobium sp. strains in pure culture in relation to extracellular polysaccharide composition and antigenic affinity.
abstract: Five strains of slow-growing Rhizobium sp. (strains CB756, 32HI, CB562, CB627 and QA549) out of seventy examined developed appreciable nitrogenase activity in pure culture. CB756 and 32HI were serologically indistinguishable and each produced 6-deoxy-L-talose as a major component of its extracellular polysaccharide. They did not share these properties with CB562, CB627 or QA549.
mesh_terms: D000942:Antigens, Bacterial / Q000032:analysis; D003429:Cross Reactions; D003837:Deoxy Sugars / Q000032:analysis; D005779:Immunodiffusion; D009591:Nitrogenase / Q000378:metabolism*; D011135:Polysaccharides, Bacterial / Q000032:analysis; D012231:Rhizobium / Q000032:analysis / Q000201:enzymology* / Q000276:immunology; D013045:Species Specificity
chemical_list: D000942:Antigens, Bacterial; D003837:Deoxy Sugars; D011135:Polysaccharides, Bacterial; D009591:Nitrogenase