RhizobiumFabaceaeRhizobium leguminosarumSinorhizobiumRhizobiaceaeNitrogen FixationRhizobium etliPlants, MedicinalSymbiosisGenes, BacterialSpecies SpecificityRhizobium tropiciDNA, BacterialSinorhizobium melilotiMolecular Sequence DataRoot Nodules, PlantMedicago sativaPlant Root NodulationRNA, Ribosomal, 16SSequence Analysis, DNAPhaseolusBacterial ProteinsPlasmidsPlant RootsDNA, RibosomalBradyrhizobiumMutationMesorhizobiumGene Expression Regulation, BacterialEscherichia coliSoil MicrobiologyPhylogenyPolysaccharides, BacterialBacterial Typing TechniquesAmino Acid SequencePhenotypeBase SequenceDNA Transposable ElementsCloning, MolecularGenetic Complementation TestNucleic Acid HybridizationMedicagoBase CompositionPeasMice, Inbred StrainsRNA, BacterialVirulenceCulture MediaNitrogenaseMedicago truncatulaConjugation, GeneticGenome, BacterialSequence Homology, Nucleic AcidVicia sativaAlphaproteobacteriaCosmidsMutagenesis, InsertionalSoybeansPlantsPolymerase Chain ReactionRestriction MappingLeghemoglobinAgrobacterium tumefaciensGenes, rRNAAnti-Bacterial AgentsLespedezaSequence Homology, Amino AcidTrifoliumOperonDNA, Ribosomal SpacerMicrobial Sensitivity TestsChromosomes, BacterialPolymorphism, Restriction Fragment LengthAcetyleneDNA FingerprintingTephrosiaDrug Resistance, MicrobialViciaGenotype