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.
Grows on 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.
- 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
Acid is produced from: D-fructose, D-galactose, D-glucose, D-mannose & D-mannitol.
Acid is not produced from: L-arabinose, lactose, L-rhamnose, sucrose & D-xylose.
Positive results for catalase, oxidase, urease, phosphatase, lipase (weak) & nitrates
Negative results for arginine dihydrolase, beta-galactosidase, gelatinase, ornithine decarboxylase, lysine decarboxylase, indole
production, methyl red, Voges-Proskauer test, esculin hydrolysis, starch hydrolysis & cellulose hydrolysis.
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, L-alanine, L-arginine, L-glutamic acid, L-glutamine, L-lysine,
L-serine, L-tyrosine & L-tryptophan.
Cannot utilize: 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, L-leucine, L-isoleucine, L-methionine, L-proline, L-threonine & L-valine.
(c) Costin Stoica