Sphingomonas paucimobilis
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General information
Taxonomy
Family: Sphingomonadaceae
- S. parapaucimobilis
Malditof
All others are apathogenic
Natural habitat
In the environment, especially water and in the water from hospitals.
Does not belong to the normal flora of the human being.
Clinical significance
Virulence factor is unknown.
Transmission probably due to exposure to contaminated instruments or solutions.
Catheter-related sepsis, liquor, wound and urinary tract infections occur.
Of this genus are S. paucimobilis and S. parapaucimobilis clinically important
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Gram stain
Medium-long Gram negative rods.
0.3-0.8 by 1.0-1.9
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Culture characteristics
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Obligate Aerobic
BA: slow growing, small, round, smooth, sphere, buttery and sometimes mucoid colonies.
Older colonies have a deep yellow (mustard color) pigment.
McConkey: no growth
BBAØ: no growth
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Characteristics
- Gram-negative
- bacilli
- medium-bacilli|large-bacilli
- growth obligate-aerobic
- no growth on MacConkey agar
- catalase-positive
- oxidase-negative
- indole-negative
- urease-negative
- motility
- vancomycin-susceptible
- colistine-resistant
- oxidase-weakly positive (90%), or negative
- colistine-susceptible (89%)
- motility-single polar flagellum
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References
James Versalovic et al.(2011) Manual of Clinical Microbiology 10th Edition
Karen C. Carrol et al (2019) Manual of Clinical Microbiology, 12th Edition
Microbiology on the go. An initiative by
Dept. Medical Microbiology and Infectious diseases