Rhizobium etliRhizobiumSymbiosisRhizobium leguminosarumNitrogen FixationFabaceaePlasmidsPhaseolusRhizobium tropiciSinorhizobium melilotiPlants, MedicinalGenes, BacterialRoot Nodules, PlantRhizobiaceaeCerebellar NucleiSinorhizobiumMedicago sativaPlant Root NodulationBacterial ProteinsMolecular Sequence DataDNA, BacterialPlant RootsConjugation, GeneticBradyrhizobiumGene Expression Regulation, BacterialFibronectinsMesorhizobiumMuscimolNitrogenase