| Mycobacterium pulveris |
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Actinobacteria, Class Actinobacteria, Order Actinomycetales, Suborder Corynebacterineae, Family Mycobacteriaceae, Genus
Mycobacterium, Mycobacterium pulveris Tsukamura et al. 1983.
Mycobacterium, Mycobacterium pulveris Tsukamura et al. 1983.
Acid-fast short rods or coccoid forms, 0.5 x 2 μm. Mycelium or branching are not
produced.
produced.
Colonies are wet, smooth, creamy or slightly yellowish, and non-photochromogenic.
Abundant growth appears in 5 d at 37 ºC from dilute inocula on Ogawa egg medium.
The temperature range for growth is 28-42 ºC; occasional strains will grow at 45 ºC.
Grows in the presence of 5% (w/v) NaCl.
Abundant growth appears in 5 d at 37 ºC from dilute inocula on Ogawa egg medium.
The temperature range for growth is 28-42 ºC; occasional strains will grow at 45 ºC.
Grows in the presence of 5% (w/v) NaCl.
Isolated from house dust.
Resistant to ethambutol (5 µg/ml) (most strains), rifampin (25 µg/ml), isoniazid (10 µg/ml), sodium chloride (5%), p-nitrobenzoic acid
(0.5 mg/ml), sodium salicylate (0.5 mg/ml), and thiophene-2-carboxylic acid hydrazide (1 µg/ml). Susceptible to hydroxylamine (500
µg/ml) and 0.2% picric acid.
Resistant to ethambutol (5 µg/ml) (most strains), rifampin (25 µg/ml), isoniazid (10 µg/ml), sodium chloride (5%), p-nitrobenzoic acid
(0.5 mg/ml), sodium salicylate (0.5 mg/ml), and thiophene-2-carboxylic acid hydrazide (1 µg/ml). Susceptible to hydroxylamine (500
µg/ml) and 0.2% picric acid.
Not pathogenic.
- Tsukamura M, Mizuno S, Toyama H. Mycobacterium pulveris sp. nov., a nonphotochromogenic mycobacterium with an
intermediate growth rate. Int. J. Syst. Bacteriol. 1983; 33:811-815. - Tsukamura M, Yano I, Imaeda T. Mycobacterium moriokaense sp. nov., a rapidly growing, nonphotochromogenic Mycobacterium.
Int. J. Syst. Bacteriol. 1986; 36:333-338. - 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.
Positive results for acid phosphatase, arylsulfatase after 14 days, thermostable catalase (68 ºC), alpha- and beta-esterase, nitrate
reduction, nicotinamidase, pyrazinamidase, and Tween 80 hydrolysis.
Can utilize as sole carbon source in the presence of ammoniacal nitrogen: glucose and glutamate.
Negative results for arylsulfatase after 3 days, acetamidase, allantoinase, succinamidase, benzamidase, isonicotinamidase,
semiquantitative catalase activity (<45 mm foam), and niacin production.
No utilization as sole carbon source in the presence of ammoniacal nitrogen of fructose, sucrose, mannose, galactose, arabinose,
rhamnose, inositol, ethanol, propylene glycol, 1,3-butylene glycol, 1,4-butylene glycol, 2,3-butylene glycol, n-butanol, isobutanol, D-
xylose, trehalose, mannitol, sorbitol, citrate, succinate, malate, malonate, benzoate, and fumarate.
Variable results for beta-galactosidase and urease.
reduction, nicotinamidase, pyrazinamidase, and Tween 80 hydrolysis.
Can utilize as sole carbon source in the presence of ammoniacal nitrogen: glucose and glutamate.
Negative results for arylsulfatase after 3 days, acetamidase, allantoinase, succinamidase, benzamidase, isonicotinamidase,
semiquantitative catalase activity (<45 mm foam), and niacin production.
No utilization as sole carbon source in the presence of ammoniacal nitrogen of fructose, sucrose, mannose, galactose, arabinose,
rhamnose, inositol, ethanol, propylene glycol, 1,3-butylene glycol, 1,4-butylene glycol, 2,3-butylene glycol, n-butanol, isobutanol, D-
xylose, trehalose, mannitol, sorbitol, citrate, succinate, malate, malonate, benzoate, and fumarate.
Variable results for beta-galactosidase and urease.
(c) Costin Stoica
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