Noun
the type genus of Rhizobiaceae; usually occur in the root nodules of legumes; can fix atmospheric oxygen
Source: WordNetSymbiotic nitrogen-fixing bacteria such as Rhizobium usually live in the root nodules of legumes (such as peas, alfalfa, and locust trees). Source: Internet
Classes V and VI These forms of AC have been reported in specific bacteria (Prevotella ruminicola and Rhizobium etti, respectively) and have not been extensively characterized. Source: Internet