Pseudomonas antarctica
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Proteobacteria, Class Gammaproteobacteria, Order Pseudomonadales, Family Pseudomonadaceae, Genus Pseudomonas,
Pseudomonas antarctica
 Reddy et al. 2004.
Gram-negative, motile with polar  flagella, rods.
On solid medium: circular, convex, smooth and translucent colonies with a diameter
of 1–2 mm. Aerobic, psychrophilic - growth temperature 4-30 ºC (optimum 22 ºC), 48
hours. Can tolerate 3 % NaCl (w/v). Optimum pH = 7.
Media: Trypticase Soy Agar   ± 5% sheep blood, Antarctic Bacterial Medium (0.5%
peptone, 0.2% yeast extract & 1.5% agar at pH 6.9)..
Isolated from cyanobacterial mat samples (water)  that were collected from Antarctica.
Unknown.
  1. Reddy GSN; Matsumoto GI; Schumann P; Stackebrandt E; Shivaji S.: Psychrophilic pseudomonads from Antarctica:
    Pseudomonas antarctica sp. nov., Pseudomonas meridiana sp. nov. and Pseudomonas proteolytica sp. nov. Int J Syst Evol
    Microbiol 54:713-719,20.
Acid is produced from D-fructose, D-galactose, D-glucose,D-mannose & D-mannitol.
Acid is not produced fromL-arabinose, lactose, L-rhamnose, sucrose & D-xylose.
Catalase, oxidase, urease, phosphatase, lipase (weak) & nitrates reduction are
positive.
Beta-galactosidase, gelatinase, arginine dihydrolase, ornithine decarboxylase, lysine
decarboxylase, indole, methyl red,  Voges–Proskauer test, esculin hydrolysis, starch
hydrolysis & cellulose hydrolysis are negative.
Can utilize acetate, adonitol, citrate, meso-erythritol, D-fructose, D-galactose, D-
glucose, glycerol, meso-inositol, lactic acid, D-mannose, D-mannitol, pyruvate, D-
ribose, sorbitol, trehalose, Lalanine, L-arginine, L-glutamic acid, L-glutamine, L-lysine,
L-serine, L-tyrosine &L-tryptophan.
L-arabinose, D-cellobiose, cellulose, dextran, dulcitol, fumaric acid, inulin, lactose, D-maltose, D-melibiose, melezitose, D-raffinose,
L-rhamnose, D-sorbose, sucrose, succinic acid, thioglycollate, D-xylose, L-aspartic acid, L-aspargine, L-cysteine, L-glycine,
L-histidine, Lleucine, L-isoleucine, L-methionine, L-proline, L-threonine & L-valine are not utilized.
(c) Costin Stoica
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