RhizobiumRhizobium leguminosarumRhizobium etliSinorhizobium melilotiNitrogen FixationSymbiosisBacteriaRhizobium tropiciFabaceaeGram-Negative BacteriaRhizobiaceaeGenes, BacterialBacterial ProteinsDNA, BacterialMolecular Sequence DataGram-Positive BacteriaRoot Nodules, PlantPlants, MedicinalMedicago sativaRNA, Ribosomal, 16SPlant Root NodulationSinorhizobiumPhylogenyBacteria, AnaerobicPhaseolusDNA, RibosomalPlant RootsSequence Analysis, DNABradyrhizobiumEscherichia coliSoil MicrobiologyGene Expression Regulation, BacterialPlasmidsMesorhizobiumBacteria, AerobicBase SequenceSpecies SpecificityPolysaccharides, BacterialAmino Acid SequenceRNA, BacterialMutationCloning, MolecularMedicagoGram-Negative Aerobic BacteriaWater MicrobiologyPeasGenome, BacterialCulture MediaGenetic Complementation TestBase CompositionDNA Transposable ElementsMedicago truncatulaPlantsAnti-Bacterial AgentsNitrogenaseColony Count, MicrobialVicia sativaGram-Negative Anaerobic BacteriaBacterial Physiological PhenomenaSoybeansGenes, rRNAPhenotypeAgrobacterium tumefaciensSequence Homology, Amino AcidNucleic Acid HybridizationCosmidsLeghemoglobinAerobiosisAnaerobiosisMutagenesis, InsertionalSequence Homology, Nucleic AcidTrifoliumAcetyleneLipopolysaccharidesLespedezaSulfur-Reducing BacteriaOperonConjugation, GeneticBacterial Typing TechniquesSeawaterBiodegradation, EnvironmentalTephrosiaViciaPseudomonasBacterial AdhesionProteobacteriaHydrogenaseAlphaproteobacteriaLipid A