Brevundimonas (Pseudomonas) vesicularis
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Proteobacteria, Class Gammaproteobacteria, Order Pseudomonadales, Family Pseudomonadaceae, Genus Pseudomonas,
Pseudomonas vesicularis
(Busing, Doll & Freitag 1953) Galarneault & Leifson 1964. Moved to Class Alphaproteobacteria, Order  
Caulobacterales, Family Caulobacteraceae, Genus Brevundimonas,
Brevundimonas vesicularis (Büsing et al. 1953) Segers et al. 1994.
Old synonyms:
Corynebacterium vesiculare  Büsing et al. 1953, Pseudomonas vesiculare  (Büsing et al. 1953) Galarneault and Leifson
1964.
Gram negative rods with a single polar flagellum, 0.5 by 1-4 μm.
Yellow / orange colonies (non fluorescent, non diffusible, carotenoid pigment
(intracellular)).
Obligately aerobic, optimum temperature 26 - 30ºC (no growth at 4 or 41 ºC). Can
grow on Nutrient agar or nutrient broth.
First isolated from the seminal vesicle of  Hirudo medicinalis (medicinal leech). Other isolates from water, soil, slime deposits in
paper mills, rarely clinical human specimens.
Unknown. Few reports of bacteremia in immunocompromised patients.
  1. R.E. Buchanan & N.E. Gibbons (co-editors): Bergey’s Manual of Determinative Bacteriology, eighth edition, 236.
  2. Bobbak Vahid: Brevundimonas Vesicularis Bacteremia Following Allogeneic Bone Marrow Transplantation. The Internet Journal of
    Infectious Diseases. 2006. Volume 5 Number 1.
  3. Busing K.H., Doll W. & Freitag K.: Die Bakterienflora der medizinischen Blutegel. Archiv fur Mikrobiologie, 1953, 19, 52-86.
  4. Galarneault T.P. & Leifson E.: Pseudomonas vesiculare (Busing et al.) nov. comb. International Bulletin of Bacteriological
    Nomenclature and Taxonomy, 1964, 14, 165-168.
Accumulate poli-beta-hydroxybutyrate.
Some strains can be distinguished from
Brevundimonas diminuta by the oxidation of
glucose, xylose, and maltose, the failure to produce a pellicule in broth cultures, and
the production of an intracellular carotenoid pigment.

Can utilize for growth: glucose, galactose, maltose, cellobiose, acetate, butyrate, succinate, L-malate, D&L-alanine, L-aspartate,
DL-beta-hydroxybutyrate.

Cannot utilize: fructose, gluconate, lactose, trehalose, xylose, L-histidine, pantothenate, glycerol, erythritol, D-arabinose, L-arabinose,
D-ribose, D-xylose, L-xylose, adonitol, methyl-P-xyloside, D-fructose, D-mannose, L-sorbose, dulcitol, inositol, mannitol, sorbitol,
methyl-a-Dmannoside, methyl - alpha - D-glucose, N-acetylglucosamine, amygdalin, arbutin, salicin, lactose, D-melibiose, sucrose,
trehalose,inulin, D-melezitose, D-raffinose, glycogen, xylitol, P-gentiobiose, D-turanose, D-lyxose, D-tagatose, D-fucose, L-fucose,
Darabitol, L-arabitol, gluconate, 2-ketogluconate, 5-ketogluconate, propionate, isobutyrate, heptanoate, n-caproate, caprylate,
pelargonate, caprate, oxalate, malonate, maleate, glutarate, adipate, pimelate, suberate, azelate, sebacate, glycolate, D-malate,
DL-glycerate, D-tartrate, L-tartrate, meso-tartrate, levulinate, citraconate, itaconate, mesaconate, citrate, phenylacetate, benzoate,
o-hydroxybenzoate, m-hydroxybenzoate, p-hydroxybenzoate, D-mandelate, L-mandelate, phthalate, isophthalate, terephthalate,
glycine, L-norleucine, L-cysteine, L-methionine, L-phenylalanine, D-tryptophan, I--tryptophan, trigonelline, L-ornithine, L-lysine,
L-citrulline, DL-kynurenine, betaine, creatine, p-alanine, urea, acetamide, sarcosine, ethylamine, butylamine, amylamine,
ethanolamine, benzylamine, diaminobutane, spermine, histamine, tryptamine & glucosamine.

Nitrates & nitrites reduction negative. Egg yolk reaction negative.
Can oxidize isopropanol to acetone. Esculin is hydrolyzed. Positive for alpha-glucosidase activity and negative for chymotrypsin
activity. Valine arylamidase is present in some strains but not the type strain.
(c) Costin Stoica
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