Positive results for oxidase, catalase, arginine dihydrolase, nitrate reduction to nitrite,
hydrolysis of gelatin, Tween 20, 40, 60 & 80, acid production from: D-glucose, D-xylose,
mannitol, glycerol & fructose, utilization of: D-glucose, mannitol, glycerol, fructose, DL-
malic acid, succinic acid, L-proline, glutamate & L-arginine.
Negative results for hydrolysis of: starch, DNA, pullulan & aesculin, acid production from: L-arabinose, sucrose, sorbitol, raffinose,
rhamnose, myo-inositol, lactose, trehalose, cellobiose & maltose, utilization of: L-arabinose, D-xylose, D-mannose, melibiose,
sucrose, sorbitol, raffinose, rhamnose, myo-inositol, D-galactose, lactose, trehalose, cellobiose, maltose & L-valine.
Phylum Proteobacteria, Class Gammaproteobacteria, Order Pseudomonadales, Family Pseudomonadaceae, Genus Pseudomonas,
Pseudomonas alcaliphila Yumoto et al. 2001.
Gram-negative straight rods 0.3-0.5 x 1.5-3.0 μm, nonspore-forming, motile by means
of a single polar flagellum.
Colonies are circular and colourless. Growth occurs in media supplemented with
3.5% NaCl, but not in media with salinity higher than 9% at pH 10. Growth occurs at
4-30 ºC, but no growth is observed at 40 ºC or higher.
Isolated from seawater, Hokkaido, Japan.
- Yumoto, I, Yamazaki, K, Hishinuma, M, Nodasaka, Y, Suemori, A, Nakajima, K, Inoue, N, Kawasaki, K. Pseudomonas alcaliphila
sp. nov., a novel facultatively psychrophilic alkaliphile isolated from seawater. Int J Syst Evol Microbiol 2001 51: 349-355
(c) Costin Stoica