title: Chromosomal gene controlling symbiotic nitrogen fixation in Rhizobium meliloti L5-30.
abstract: Auxotrophic Rhizobium meliloti strain RM 246 carries two independent mutations: in the biosynthesis of cysteine (cys) and symbiotic nitrogen fixation process (fix). These two mutations were mapped by transduction between his-240 and ade-4 markers. Cotransduction frequencies show the following order of genes: his-240 fix-1 cys-246 ade-4.
mesh_terms: D002874:Chromosome Mapping; D002876:Chromosomes, Bacterial; D005798:Genes, Bacterial; D009154:Mutation; D009586:Nitrogen Fixation; D012231:Rhizobium / Q000235:genetics* / Q000378:metabolism; D014161:Transduction, Genetic