An aerobic, oxidase-positive, gram-negative bacillus that produces nonpigmented to light beige colonies. Some colonies may be mucoid due to the production of a slime capsule by the organism. This isolate of A. rhizogenes has been identified as belonging to Group A using the Biolog classification system. It is isolated from plants and soil. It is primarily a plant pathogen and has not been reported as a cause of human infections.