Pseudomonas congelans
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Proteobacteria, Class Gammaproteobacteria, Order Pseudomonadales, Family Pseudomonadaceae, Genus Pseudomonas,  
Pseudomonas congelans
 Behrendt et al. 2003.
Gram-negative, non-sporeforming rods, motile by one polar flagellum, 2.5–2.9 µm
wide and about 0.8 µm long.
Aerobic, optimal growth temperature 21 ºC. Media: Trypticase Soy Agar, Nutrient agar,
King’s agar A & B. Colonies on King A and B media are white-yellowish, smooth with
regular margins and produce a pigment with light yellow-green fluorescence on UV
light. Nonhemolytic on sheep blood agar.
First isolated from the phyllosphere of grasses in Germany. Presents ice nucleation activity.
Possible plant pathogen.
  1. Behrendt U., Ulrich A. & Schumann P.: Fluorescent pseudomonads associated with the phyllosphere of grasses; Pseudomonas
    trivialis sp. nov., Pseudomonas poae sp. nov. and Pseudomonas congelans sp. nov. Int. J. Syst. Evol. Microbiol., 2003, 53, 1461-
    1469.
Negative for hydrolysis of starch, formation of levan from sucrose, reduction of nitrate to
nitrite, denitrification, arginine dihydrolase, DNase, indole production, formation of H
2S
from sodium thiosulphate, oxidase & utilization of D-tartrate, N-acetyl-D-glucosamine,
DL-carnitine, D-cellobiose, glucose 6-phosphate, glycyl L-aspartic acid, c-hydroxybutyric
acid, hydroxy-L-proline, glycogen, p-hydroxyphenylacetic acid, alpha-ketovaleric acid,
L-ornithine, putrescine or L-rhamnose.

Positive for gelatinase, casein hydrolysis, catalase, aesculin hydrolysis & aerobic acid formation from glucose.
Can utilize L-arabinose, D-arabitol, m-Inositol, D-mannitol, sucrose, D-galacturonic acid, D-glucosaminic acid, D-glucuronic acid,
L-asparagine, L-pyroglutamic acid, L-threonine, D-trehalose,erythritol, glycerol, DL-lactic acid, 2-aminoethanol, i-erythritol,
alpha-D-glucose, glycyl, L-glutamic acid, DL-alpha-glycerol phosphate, alpha-hydroxybutyric acid, beta-hydroxybutyric acid, formic
acid, L-histidine, monomethyl succinate, L-proline, D-psicose, quinic acid, D-sorbitol, D-serine, succinamic acid, & Tween 40.
(c) Costin Stoica
Antibiogram
Encyclopedia
Culture media
Biochemical tests
Stainings
Images
Movies
Articles
Identification
Software
R E G N U M
PROKARYOTAE
Previous page
Back