RhizobiaceaeRhizobiumBacteriaRhizobium leguminosarumSinorhizobium melilotiSymbiosisBacterial Proteinsbeta-GlucansDNA, BacterialAgrobacterium tumefaciensGlucansRNA, Ribosomal, 16SMolecular Sequence DataPhylogenyGram-Negative BacteriaGram-Positive BacteriaGenes, BacterialNitrogen FixationDNA, RibosomalSpecies SpecificityBacteria, AnaerobicBase SequenceBacteria, AerobicEscherichia coliSequence Analysis, DNAWater MicrobiologyGram-Negative Aerobic BacteriaGram-Negative Anaerobic BacteriaBacterial Physiological PhenomenaSoil MicrobiologyAnti-Bacterial AgentsSulfur-Reducing BacteriaRNA, Bacterial