| Mycobacterium senuense |
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Actinobacteria, Class Actinobacteria, Order Actinomycetales, Suborder Corynebacterineae, Family Mycobacteriaceae, Genus
Mycobacterium, Mycobacterium senuense Mun et al. 2008.
Member of the Mycobacterium terrae complex.
Mycobacterium, Mycobacterium senuense Mun et al. 2008.
Member of the Mycobacterium terrae complex.
Acid-alcohol-fast, rod-shaped cells, frequently bent. Spores and filaments are
not present.
not present.
Colonies on Middlebrook 7H10 agar are usually rough and produce no pigmentation
under both dark and light conditions. Cells on Lowenstein-Jensen medium grow in a
film-like manner and produce no pigmentation. On Middlebrook 7H10 medium,
mature growth develops in 4 weeks at 25 and 37 ºC. Microcolonies develop in 3
weeks at the same temperature. However, 5 weeks or more is required to form
mature colonies on L-J medium. The optimal growth temperature is 37 ºC. No growth
at 45 ºC. No growth on MacConkey agar without crystal violet, on culture medium
containing 5% NaCl or picric acid (2%).
under both dark and light conditions. Cells on Lowenstein-Jensen medium grow in a
film-like manner and produce no pigmentation. On Middlebrook 7H10 medium,
mature growth develops in 4 weeks at 25 and 37 ºC. Microcolonies develop in 3
weeks at the same temperature. However, 5 weeks or more is required to form
mature colonies on L-J medium. The optimal growth temperature is 37 ºC. No growth
at 45 ºC. No growth on MacConkey agar without crystal violet, on culture medium
containing 5% NaCl or picric acid (2%).
Isolated from sputum samples in Seoul, Korea.
Susceptible to ethambutol at 500 μg/ml. Resistant to thiophene-2-carboxylic acid hydrazide (10 μg/ml)
Susceptible to ethambutol at 500 μg/ml. Resistant to thiophene-2-carboxylic acid hydrazide (10 μg/ml)
Pulmonary infection.
- Mun HS, Park JH, Kim H, Yu HK, Park YG, Cha CY, Kook YH, Kim BJ. Mycobacterium senuense sp. nov., a slowly growing, non-
chromogenic species closely related to the Mycobacterium terrae complex. Int J Syst Evol Microbiol 2008; 58:641-646. - Stephen Berger 2019. GIDEON Guide to Medically Important Bacteria, eBook.
Positive results for nitrate reduction, heat-stable catalase (68 ºC), pyrazinamidase, tellurite reduction, and Tween 80 hydrolysis.
Negative results for arylsulfatase (3 and 14 days), iron uptake, niacin accumulation, and urease.
Negative results for arylsulfatase (3 and 14 days), iron uptake, niacin accumulation, and urease.
(c) Costin Stoica
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