Acidovorax (Pseudomonas) delafieldii
Taxonomy
Morphology
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References
Phylum Proteobacteria, Class Gammaproteobacteria, Order Pseudomonadales, Family Pseudomonadaceae, Genus Pseudomonas,  
Pseudomonas delafieldii
Davis 1970.  
Moved to Bacteria => Proteobacteria => Betaproteobacteria => Burkholderiales => Comamonadaceae => Acidovorax =>
Acidovorax
delafieldii
 Willems et al. 1990.
Gram-negative rods, 0.5 x 1.8-2.6 μm, motile by means of a single polar flagellum.
Strictly aerobic, optimal temperature 30 ºC. Organic growth factors not required. Can
grow in the presence of 1.5% NaCl, on Drigalski-Conradi agar, Trypticase Soy Agar &
Mueller-Hinton agar.
Isolated from soil by enrichment with poli-beta-hydroxybutirate, also, isolated from water and various samples from clinical
environments.
No reports of human infections.
  1. Bergey’s Manual of Determinative Bacteriology, 9th ed., 1994.
  2. Davis D.H.. In: Davis D.H., Stanier R.Y., Doudoroff M. & Mandel M.: Taxonomic studies on some Gram-negative polarly flagellated
    "hydrogen bacteria" and related species. Archiv fur Mikrobiologie, 1970, 70, 1-13.
  3. Willems A., Falsen E., Pot B., Jantzen E., Hoste B., Vandamme P., Gillis M., Kersters K. & De Ley J.: Acidovorax, a new genus for
    Pseudomonas facilis, Pseudomonas delafieldii, E. Falsen (EF) group 13, EF group 16, and several clinical isolates, with the
    species Acidovorax facilis comb. nov., Acidovorax delafieldii comb. nov., and Acidovorax temperans sp. nov. Int. J. Syst. Bacteriol.,
    1990, 40, 384-398.
Can utilize as sole carbon source: ribose, arabinose, mannose, galactose, glycerol,
sorbitol, poli-beta-hydroxybutirate.

Catalase, hydrolysis of Tween 80, growth on: D-mannose, L-arabinose, D-ribose,
D-galactose, D-mannitol, D-arabitol, sorbitol, D-fucose, D-fructose, gluconate, 2 -
ketogluconate, D-lactate, D-lactate + methionine, alpha-alanine, L-threonine, L-leucine,
L-isoleucine, L-norleucine, L-serine, L-methionine, L-phenylalanine, L-tyrosine, L-histidine,
L-aspartate, L-ornithine, L-citrulline, n-valerate, isovalerate, fumarate, L-malate, glutarate, adipate, pimelate, DL-glycerate,
meso-tartrate, pyruvate, levulinate, 2-ketoglutarate & p-hydroxybenzoate are positive

Beta-galactosidase, H
2S production, indole production, gelatinase, nitrate reduction, nitrite reduction, denitrification, autotrophic
growth with hydrogen, growth on: DL-norleucine L-valine, DL-norvaline, DL-2-aminobutyrate, beta-alanine, DL-4-aminobutyrate,
acetate, propionate, isobutyrate, n-caproate, heptanoate, maleate, citraconate, aconitate, citrate & m-hydroxybenzoate are negative.

Growth on L-Tryptophan & D-Tartrate is variable.
(c) Costin Stoica
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