Mycobacterium arupense

Mycobacterium arupense is a rapidly growing mycobacterium first isolated from soil and human sputum samples in Spain. Etymology: arupense, pertaining to the ARUP Institute for Clinical and Experimental Pathology, where the type strain was characterized.

Description
Microscopy
 * Gram-positive, nonmotile and acid-fast rods (1-3µm x 0.5-0.7µm), mostly strong acid-fast.

Colony characteristics
 * Colonies are eugonic, rough and nonpigmented.

Physiology
 * Colonies occur within 5 days at 30°C (optimum temperature, no growth at 45°C) on Löwenstein-Jensen medium and on Middlebrook 7H10 agar.
 * No growth on MacConkey agar without crystal violet.
 * The type strain is resistant to D-cycloserine, streptomycin, isoniazid (0.1 and 1 mg/l), rifampin, and thiacetazone and is susceptible to isoniazid (10 mg/l), kanamycin, and capreomycin.

Pathogenesis

 * Not associated with disease.

Type Strain

 * First isolated from water samples, from soil and human sputum samples, Spain.
 * Strain AR30097 = ATCC BAA-1242 = DSM 44942.