| Mycobacterium icosiumassiliensis |
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Actinobacteria, Class Actinobacteria, Order Actinomycetales, Suborder Corynebacterineae, Family Mycobacteriaceae, Genus
Mycobacterium, Mycobacterium icosiumassiliensis Djouadi et al. 2016.
Member of the Mycobacterium terrae complex. Species description is based on a single isolate.
Mycobacterium, Mycobacterium icosiumassiliensis Djouadi et al. 2016.
Member of the Mycobacterium terrae complex. Species description is based on a single isolate.
Acid-fast rods, 2.05 ± 0.44 x 0.53 ± 0.06 μm. Gram-positive. No spores or filaments
are produced.
are produced.
Colonies are dysgonic, smooth, non-pigmented, and grow on Middlebrook 7H10 +
OADC (Oleic Acid, Bovine albumin, Sodium Chloride, Dextrose, Catalase) and
Lowenstein-Jensen media in 5 days at 35 ºC. Growth is observed at 42 ºC. Grows in
3% NaCl.
OADC (Oleic Acid, Bovine albumin, Sodium Chloride, Dextrose, Catalase) and
Lowenstein-Jensen media in 5 days at 35 ºC. Growth is observed at 42 ºC. Grows in
3% NaCl.
Isolated from surface water from Reghaia Lake in East Algiers.
Resistant to thiophen-2-carboxylic acid hydrazide TCH (1 μg/ml), para-nitrobenzoic acid PNB (500 μg/ml), sulfamethoxazole +
trimethoprim, linezolid, ciprofloxacin, tobramycin, imipenem, moxifloxacin, rifampicin, amikacin, isoniazid, doxycycline, minocycline,
ethambutol, and clarithromycin. Susceptible to cefoxitin and rifabutin.
Resistant to thiophen-2-carboxylic acid hydrazide TCH (1 μg/ml), para-nitrobenzoic acid PNB (500 μg/ml), sulfamethoxazole +
trimethoprim, linezolid, ciprofloxacin, tobramycin, imipenem, moxifloxacin, rifampicin, amikacin, isoniazid, doxycycline, minocycline,
ethambutol, and clarithromycin. Susceptible to cefoxitin and rifabutin.
Undetermined.
- Djouadi, L.N., Levasseur, A., Khalil, J.B. et al. Mycobacterium icosiumassiliensis sp. nov., a New Member in the Mycobacterium
terrae Complex Isolated from Surface Water in Algeria. Curr Microbiol 73, 255–264 (2016). https://doi.org/10.1007/s00284-016-
1062-4.
Positive results for catalase, heat-stable catalase (68 ºC), alpha- and beta-glucosidase.
Negative results for nitrate reduction, niacin accumulation, pyrazinamidase, Tween 80 hydrolysis, and urease.
Negative results for nitrate reduction, niacin accumulation, pyrazinamidase, Tween 80 hydrolysis, and urease.
(c) Costin Stoica
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