Does not hydrolyse aesculin and does not produce acid from L-tartrate. Nitrates are not reduced. Levan-sucrase-negative,
non-pectinolytic and does not degrade polypectates at pH 5 or 8. Does not assimilate L-sorbose, alpha-D-melibiose, D-raffiose,
maltotriose, maltose, alpha-lactose, lactulose, methyl 1-O-beta-galactopyranoside, methyl 1-O-alpha-galactopyranoside,
D-cellobiose, beta-gentiobiose, methyl 1-O-beta-D-glucopyranoside, palatinose, alpha-L-rhamnose, alpha-L-fucose, D-melezitose,
dulcitol, D-tagatose, maltitol, hydroxyquinoline-beta-glucuronide, methyl 1-O-alpha-D-glycopyranoside, methyl 3-O-D-glucopyranose,
L-tartrate, tricarballylate, L-tryptophan, phenylacetate, gentisate, m-hydroxybenzoate, 3-phenylpropionate, m-coumarate, trigonelline,
L-histidine & tryptamine.
Pseudomonas costantinii
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Proteobacteria, Class Gammaproteobacteria, Order Pseudomonadales, Family Pseudomonadaceae, Genus Pseudomonas,  
Pseudomonas costantinii
Munsch et al. 2002.  Close to Pseudomonas tolaasii.
Gram-negative straight rods, motile by a single polar flagellum.
Produces a fluorescent diffusible greenish pigment. Colonies may be hemolytic.
Aerobic, optimal growth temperature 28 ºC.
Media: Trypticase Soy Agar, Nutrient agar, King’s B agar.
Isolated from cultivated mushroom sporophores (Agaricus bisporus).
Causal agent of brown blotch disease in mushrooms. Does not induce a hypersensitive reaction on tobacco leaves.
  1. Munsch P., Alatossava T., Marttinen N., Meyer J.M., Christen R. & Gardan L.: Pseudomonas costantinii sp. nov., another causal
    agent of brown blotch disease, isolated from cultivated mushroom sporophores in Finland. Int. J. Syst. Evol. Microbiol., 2002, 52,
    1973-1983.
  2. Munsch P., Alatossava T.: Several pseudomonads, associated with the cultivated mushrooms Agaricus bisporus or Pleurotus sp.,
    are hemolytic. Microbiol Res. 2002;157(4):311-5.
Oxidase-positive, arginine-dihydrolase-positive and hydrolyse gelatin.  Produces acid
from DL-lactate, D-tartrate, erythritol, mannitol & sorbitol. Utilizes alpha-D-glucose,
beta-D-fructose, D-galactose, D-trehalose, D-mannose, D-ribose, L-arabinose, D-
xylose, D-arabitol, L-arabitol, xylitol, glycerol, myo-inositol, D-mannitol, D-sorbitol,
adonitol, D-lyxose, meso-erythritol, D-saccharate, mucate, meso-tartrate, D-malate,
L-malate, cis-aconitate, trans-aconitate, citrate, D-glucuronate, D-galacturonate, 2-keto-
D-gluconate, 5-keto-D-gluconate, N-acetyl-d-glucosamine, D-gluconate, protocatechuate, p-hydroxybenzoate, quinate, benzoate,
betain, putrescine, DL-alpha-amino-n-butyrate, histamine, DL-lactate, caprate, caprylate,  succinate, fumarate, glutarate, DL-glycerate,
DL-alpha-amino-n-valerate, ethanolamine, D-glucosamine, itaconate, DL-beta-hydroxybutyrate, L-aspartate, L-glutamate, L-proline,
D-alanine, L-alanine, L-serine, malonate, propionate, L-tyrosine and 2-oxoglutarate.
(c) Costin Stoica
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