RhizobiumRhizobium leguminosarumRhizobium etliSoilSinorhizobium melilotiSoil MicrobiologyNitrogen FixationSymbiosisBacteriaSoil PollutantsRhizobium tropiciFabaceaeBacterial ProteinsDNA, BacterialMolecular Sequence DataRNA, Ribosomal, 16SRhizobiaceaeGenes, BacterialPhylogenyMedicago sativaRoot Nodules, PlantSinorhizobiumPlant Root NodulationSequence Analysis, DNAPlant RootsDNA, RibosomalGram-Negative BacteriaGene Expression Regulation, BacterialBiodegradation, EnvironmentalGram-Positive BacteriaPlants, MedicinalPseudomonasBradyrhizobiumBacteria, AnaerobicRNA, BacterialEscherichia coliBase SequencePlasmidsMyxococcus xanthusCulture MediaSpecies SpecificityPhaseolusGenome, BacterialPseudomonas putidaBacterial Physiological PhenomenaPolysaccharides, BacterialAmino Acid SequencePseudomonas fluorescensGenes, rRNAColony Count, MicrobialGram-Negative Aerobic Rods and CocciMutationCarbonMedicago truncatulaPlantsCloning, MolecularBacteria, AerobicTreesMesorhizobiumNitrogenAcetyleneEcosystemAerobiosisDNA Transposable ElementsOligochaetaLightningBetaproteobacteriaPseudomonas mendocinaBurkholderiaArthrobacterActinomycetalesSoybeansBacillus subtilisAnti-Bacterial AgentsNucleic Acid HybridizationBase CompositionBacterial Typing TechniquesGenetic Complementation TestOperonSequence Homology, Amino AcidWater MicrobiologyStreptomyces coelicolorFrankiaSoil Pollutants, RadioactivePhenotypePolymerase Chain ReactionSequence Homology, Nucleic AcidRhizosphereGene Transfer, HorizontalCellvibrioMedicagoGram-Negative Aerobic BacteriaFungiConjugation, GeneticSinorhizobium frediiBacteriological TechniquesAcinetobacterFatty AcidsHydrogen-Ion ConcentrationPeas