A significant feature of the colony morphology of Proteus vulgaris is the bacterium's tendency to produce concentric rings while a colony moves across an agar plate, explains Schenectady County Community College. Colony morphology refers to the typical physical characteristics of a bacterial colony, notes Science Buddies.
The concentric rings that form while a Proteus vulgaris colony migrates across the surface of an agar plate result from the bacterium's swarming behavior and extremely actively motile natures, notes Schenectady County Community College. Typical habitats of Proteus vulgaris include the human intestinal tract, plants, water and soil. It is a form of Gram-negative bacteria with bacillus-shaped cells and is responsible for about 29 percent of urinary tract infections because of the nearness of the urethra to the anal canal. Proteus vulgaris also causes diarrhea in infants and some wound infections when the wound comes in direct contact with the bacteria. Treatment options for illness due to this strain of bacteria may include penicillin or aminoglycosides.
Food spoilage is another concern with Proteus vulgaris, according to Schenectady County Community College. As a result of improper handling, the bacteria can infect poultry, seafood and other types of meat. It is a facultative anaerobe, meaning it can engage in both aerobic and anaerobic respiration depending on the availability of oxygen.