Pseudomonas (Comamonas / Delftia)  acidovorans
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Proteobacteria, Class Gammaproteobacteria, Order Pseudomonadales, Family Pseudomonadaceae, Genus Pseudomonas,
Pseudomonas acidovorans den Dooren de Jong 1926.
Synonyms:
Pseudomonas indoloxidans Gray 1928; Pseudomonas desmolytica Gray and Thornton 1928; Comamonas acidovorans
(den Dooren de Jong 1926) Tamaoka et al. 1987;
Delftia acidovorans (den Dooren de Jong 1926) Wen et al. 1999
Gram negative rods with polar or bipolar flagella, 0.8-1.1 by 2.5-4.1 μm.
Nonhemolytic,  nonpigmented, 2-4 mm diameter colonies.
Strains designated
P. indoloxidans produce insoluble blue pigment, indigotin, in
media containing indole and asuitable carbon source. Obligately aerobic, 30 ºC (no
growth at 4 or 41 ºC).
Media: Trypticase Soy Agar  ± 5% sheep blood; Trypticase Soy Broth.
Isolated from soil, water (pisciculture farms) & sludge of biological wastewater treatment plants.
Generally, is a non-pathogenic bacteria. Reports of human catheter-associated bacteremia & endocarditis. Possible fish pathogen.
  1. R.E. Buchanan & N.E. Gibbons: Bergey’s Manual of Determinative Bacteriology, eighth edition, 232.
  2. Den Dooren de Jong 1926 (L.E.): Bijdrage tot de kennis van het Mineralisatieproces. Thesis. Technische Hogeschool, Delft, 1926,
    pp. 1-199.
  3. Willems A., Pot B., Falsen E., Vandamme P., Gillis M., Kersters K. & De Ley J.: Polyphasic taxonomic study of the emended genus
    Comamonas: relationship to Aquaspirillum aquaticum, E. Falsen group 10, and other clinical isolates. Int. J. Syst. Bacteriol., 1991,
    41, 427-444.
  4. Wen A., Fegan M., Hayward C., Chakraborty S. & Sly L.I.: Phylogenetic relationships among members of the Comamonadaceae,
    and description of Delftia acidovorans (den Dooren de Jong 1926 and Tamaoka et al. 1987) gen. nov., comb. nov. Int. J. Syst.
    Bacteriol., 1999, 49, 567-576.
  5. H Horowitz, S Gilroy, S Feinstein, and G Gilardi: Endocarditis associated with Comamonas acidovorans. J Clin Microbiol. 1990
    January; 28(1): 143–145.
Utilize benzoate as a carbon source.
H
2S production, indole production, L-arabinose utilization, m-erythritol utilization,
poli-beta-hydroxybutyrate,  arginine dihydrolase, gelatin hydrolysis, starch hydrolysis,
glucose utilization, trehalose utilization, 2-ketogluconate utilization, urease, esculin
(beta glucosidase) &  ONPG (beta-galactosidase) are negative.

Oxidase, denitrification, mannitol utilization,   L-valine utilization & citrate utilization are
positive.

M-inositol utilization is variable.
(c) Costin Stoica
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