| Stenotrophomonas (Pseudomonas) maltophilia |
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Pseudomonadota (Proteobacteria), Class Gammaproteobacteria, Order Pseudomonadales, Family Pseudomonadaceae,
Genus Pseudomonas, Pseudomonas maltophilia Hugh and Ryschenkow 1961;
Moved to Xanthomonas maltophilia Swings et al. 1983; then to Stenotrophomonas maltophilia Palleroni and Bradbury 1993.
Synonyms: Stenotrophomonas africana, Pseudomonas hibiscicola, Pseudomonas beteli.
Genus Pseudomonas, Pseudomonas maltophilia Hugh and Ryschenkow 1961;
Moved to Xanthomonas maltophilia Swings et al. 1983; then to Stenotrophomonas maltophilia Palleroni and Bradbury 1993.
Synonyms: Stenotrophomonas africana, Pseudomonas hibiscicola, Pseudomonas beteli.
Gram-negative, 0.5-1.5 µm, motile by polar multitrichous flagella, slightly curved rods.
Poly-beta-hydroxybutyrate (PBH) is not accumulated.
Poly-beta-hydroxybutyrate (PBH) is not accumulated.
S-type colonies with beta-hemolysis. Sometimes yellowish or greenish yellow (not
carotenoid). Ammonia odor can be produced by some strains on blood agar.
Strictly aerobic, optimal growth temperature 35 ºC. No growth at 4 or 41 ºC. Methionine
or cystine is required for growth.
Media: Nutritive agar, Trypticase Soy Agar, Mac Conkey agar.
carotenoid). Ammonia odor can be produced by some strains on blood agar.
Strictly aerobic, optimal growth temperature 35 ºC. No growth at 4 or 41 ºC. Methionine
or cystine is required for growth.
Media: Nutritive agar, Trypticase Soy Agar, Mac Conkey agar.
Isolated from clinical specimens, milk, frozen foods, soil (rhizosphere of some cultivated plants) & water.
Respiratory and urinary infections in humans and animals. Nosocomial infections in immunocompromised organisms. Sometimes
associated with cystic fibrosis.
associated with cystic fibrosis.
- Hugh R. & Ryschenkow E.: Pseudomonas maltophilia, an alcaligenes-like species. J. Gen. Microbiol., 1961, 26, 123-132.
- Palleroni N, Bradbury J (1993). "Stenotrophomonas, a new bacterial genus for Xanthomonas maltophilia (Hugh 1980) Swings et
al. 1983". Int J Syst Bacteriol 43 (3): 606–609. - Palleroni N. Genus IX. Stenotrophomonas. In: Bergey’s Manual of Systematic Bacteriology, Second edition, Vol two, part B, George
M. Garrity (Editor-in-Chief), 2005, pp. 107-115.
Lipolytic.
Positive results for catalase, gelatinase, nitrate reduction to nitrite (no denitrification).
Utilize as carbon source glucose, mannose, sucrose, trehalose, maltose, cellobiose, lactose, salicin, acetate, propionate, valerate,
malonate, succinate, fumarate, L-malate, lactate, citrate, alpha-ketoglutarate, pyruvate, L- and D-alanine, L-glutamate, L-histidine and
L-proline .
Negative results for arginine dihydrolase and oxidase.
Does not utilize ethanol, mannitol, amines and aromatic compounds. Does not accumulate PHB as an intracellular reserve material.
Positive results for catalase, gelatinase, nitrate reduction to nitrite (no denitrification).
Utilize as carbon source glucose, mannose, sucrose, trehalose, maltose, cellobiose, lactose, salicin, acetate, propionate, valerate,
malonate, succinate, fumarate, L-malate, lactate, citrate, alpha-ketoglutarate, pyruvate, L- and D-alanine, L-glutamate, L-histidine and
L-proline .
Negative results for arginine dihydrolase and oxidase.
Does not utilize ethanol, mannitol, amines and aromatic compounds. Does not accumulate PHB as an intracellular reserve material.
(c) Costin Stoica
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