| Mycobacterium seoulense |
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Actinobacteria, Class Actinobacteria, Order Actinomycetales, Suborder Corynebacterineae, Family Mycobacteriaceae, Genus
Mycobacterium, Mycobacterium seoulense Mun et al. 2007.
Species description is based on a single strain.
Mycobacterium, Mycobacterium seoulense Mun et al. 2007.
Species description is based on a single strain.
Acid-alcohol-fast, rods; frequently bent and occasionally coccoid. Spores and
filaments are not present.
filaments are not present.
Micro-colonies may be visible in 2 weeks on Middlebrook 7H10 agar; smooth,
orange-pigmented; mature colonies require incubation for 3 weeks. Growth may be
slower (4 or more weeks) on Löwenstein-Jensen medium and appear as an
orange-colored surface film. Temperature range for growth is 25-37 ºC, optimal
growth is at 37 ºC; does not grow at 45 ºC. Does not grow on media supplemented
with 5% (w/v) NaCl or on MacConkey agar (without crystal violet).
orange-pigmented; mature colonies require incubation for 3 weeks. Growth may be
slower (4 or more weeks) on Löwenstein-Jensen medium and appear as an
orange-colored surface film. Temperature range for growth is 25-37 ºC, optimal
growth is at 37 ºC; does not grow at 45 ºC. Does not grow on media supplemented
with 5% (w/v) NaCl or on MacConkey agar (without crystal violet).
Isolated from human sputum samples in Seoul, Korea.
Resistant to thiophene-2-carboxylic acid hydrazide (TCH), ethambutol (EMB) and picric acid.
Resistant to thiophene-2-carboxylic acid hydrazide (TCH), ethambutol (EMB) and picric acid.
Isolated from sputum samples of a 52-year-old female patient experiencing generalized pulmonary symptoms.
- 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. - Mun HS, Kim HJ, Oh EJ, Kim H, Bai GH, Yu HK, Park YG, Cha CY, Kook YH, Kim BJ. Mycobacterium seoulense sp. nov., a slowly
growing scotochromogenic species. Int J Syst Evol Microbiol 2007; 57:594-599.
Positive results for nitrate reductase, heat-stable catalase (68 ºC), pyrazinamidase and tellurite reduction.
Negative results for arylsulfatase (3 and 14 days), niacin accumulation, Tween 80 hydrolysis, and urease.
Negative results for arylsulfatase (3 and 14 days), niacin accumulation, Tween 80 hydrolysis, and urease.
(c) Costin Stoica
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