Medicago truncatulaGenome, PlantMedicagoGenomeSinorhizobium melilotiPlant Root NodulationRoot Nodules, PlantSymbiosisGenome, BacterialGenome, ViralPlant RootsMycorrhizaePlant ProteinsGenome, HumanMedicago sativaGene Expression Regulation, PlantNitrogen FixationGenes, PlantPhylogenyGenome, MitochondrialSequence Analysis, DNAGenome, FungalBase SequenceGenome SizeMolecular Sequence Data