Phylum Actinobacteria, Class Actinobacteria, Order Actinomycetales, Suborder Corynebacterineae, Family Mycobacteriaceae, Genus
Mycobacterium, Mycobacterium gordonae Bojalil et al. 1962.
Possible synonym: “Mycobacterium aquae”.
Acid-fast moderate to long rods.
Colonies on Lowenstein-Jensen medium are usually smooth, soft, and yellow- or
orange-pigmented. Usual growth time is 10-25 days. Pigment is produced when
grown in the dark, but is often intensified when grown in continuous light.
Temperature range for growth is 28-37 ºC; optimal temperature is 35 ºC. No growth at
42 or 45 ºC. No growth on media supplemented with 5% (w/v) NaCl, or on MacConkey
Frequently encountered as a casual resident in human sputum and gastric lavage specimens; also found in tap water and soil. One
isolate from carp gills (Cyprinus carpio).
Resistant to tiophene-2-carboxylic acid hydrazide (1 µg/ml), isoniazid, streptomycin, and rifampicin (25 µg/ml). Susceptible to
ethambutol in Ogawa egg medium (5 µg/ml).
Rarely involved in human disease; may cause infections in severely immunocompromised individuals.
- John G. Magee and Alan C. Ward 2012. Family III. Mycobacteriaceae Chester 1897, 63AL in Bergey’s Manual of Systematic
Bacteriology, Volume Five The Actinobacteria, Part A, Michael Goodfellow & al. (editors), 312-375.
- Loredana Gabriela Popa, Mircea Ioan Popa 2009. Identificarea bacililor acido-rezistenti in: Tratat de microbiologie clinica, Dumitru
Buiuc, Marian Negut, ed. a III-a, Editura Medicala, 881-890, ISBN (13) 978-973-39-0593-6.
- Bojalil LF, Cerbon J, Trujillo A. Adansonian classification of mycobacteria. J Gen Microbiol 1962; 28:333-346.
- Tsukamura M. A Review of the Methods of Identification and Differentiation of Mycobacteria. Reviews of Infectious Diseases, Vol. 3,
No. 5, International Conference on Atypical Mycobacteria (Sep. - Oct., 1981), pp. 841-861.
- Tsukamura M. Numerical identification of slowly growing mycobacteria. Microbiol Immunol. 1985;29(11):1039‐1050. doi:10.1111/j.
- Tsukamura M. Numerical Classification of Slowly Growing Mycobacteria. International Journal of Systematic Bacteriology, Oct. 1976,
- Mrlik V, Slany M, Kubecka J, Seda J, Necas A, Babak V, Slana I, Kriz P, Pavlik I. 2012. A low prevalence of mycobacteria in freshwater
fish from water reservoirs, ponds and farms. J. Fish Dis. 35:497–504. doi:10.1111/j.1365-2761.2012.01369.x
- Rastogi N, Legrand E, Sola C. The mycobacteria: an introduction to nomenclature and pathogenesis. Rev Sci Tech. 2001;20(1):21‐
- Stanford JL, Gunthorpe WJ. A study of some fast-growing scotochromogenic mycobacteria including species descriptions of
Mycobacterium gilvum (new species) and Mycobacterium duvalii (new species). Br J Exp Pathol 1971; 52:627-637.
Positive results for alpha- and beta-esterase, catalase (inactivated at 68 ºC), semi-quantitative catalase test, and Tween 80 hydrolysis.
Can utilize acetate, pyruvate, and propionate as sole carbon source.
Negative results for arylsulphatase (3 days), beta-galactosidase, niacin production, nicotinamidase, and nitrate reduction.
No utilization of benzoate, citrate, succinate, malate, fumarate, glucose, fructose, sucrose, ethanol.
Variable results for arylsulphatase (10 days), acid phosphatase, tellurite reduction and urease.
(c) Costin Stoica