Sinorhizobium_medicae
Ensifer medicae
Species of bacterium
Ensifer medicae (also known as Sinorhizobium medicae) is a species of gram-negative, nitrogen-fixing, rod-shaped bacteria. They can be free-living or symbionts of leguminous plants in root nodules. E.medicae was first isolated from root nodules on plants in the genus Medicago.[1] Some strains of E.medicae, like WSM419, are aerobic. They are chemoorganotrophic mesophiles that prefer temperatures around 28 °C. In addition to their primary genome, these organisms also have three known plasmids, sized 1,570,951 bp, 1,245,408 bp and 219,313 bp.[2]
Colonies of Ensifer medicae are mucoid and ring-shaped and can be viewed here.