Phylum Proteobacteria, Class Gammaproteobacteria, Order Pseudomonadales, Family Pseudomonadaceae, Genus Pseudomonas,
Pseudomonas trivialis Behrendt et al. 2003.
Gram-negative, nonspore-forming rods, motile by one polar flagellum, 1.6–3.3 x 0.8 µm.
Aerobic, optimal growth temperature 21 ºC. Media: Trypticase Soy Agar, Nutrient agar,
King’s agar A & B. Colonies are colourless, translucent smooth with regular margins
and produce on King A and B media a pigment with light yellow-green fluorescence
on UV light. Growth can be observed at 4 ºC, but none of the isolates is able to grow at
41 ºC. Nonhemolytic on sheep blood agar.
Isolated from the phyllosphere of grasses in Germany. No ice nucleation activity presented.
Possible plant pathogen.
- 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-
Positive for catalase, oxidase (weak), aesculin hydrolysis, aerobic acid formation from
glucose, oxidation of: L-arabinose, D-arabitol, bromosuccinic acid, D-fructose, D-
galactose, m-inositol, D-mannitol, D-mannose, methyl pyruvate, acetic acid, cis-aconitic
acid, citric acid, D-galactonic acid lactone, D-galacturonic acid, D-gluconic acid, D-glucosaminic acid, D-glucuronic acid,
alpha-ketoglutaric acid, malonic acid, propionic acid, D-saccharic acid, succinic acid, glucuronamide, L-alaninamide, D-alanine,
L-alanine, L-asparagine, L-aspartic acid, L-glutamic acid, itaconic acid, L-leucine, L-pyroglutamic acid, L-serine, L-threonine, Tween
80, Tween 40, gamma-aminobutyric acid, urocanic acid, inosine, uridine, glycerol, formic acid, alpha-D-glucose, alpha-ketovaleric
acid, glycyl L-glutamic acid, L-histidine, beta-hydroxybutyric acid, alpha-ketobutyric acid, L-proline, quinic acid, monomethyl succinate,
succinamic acid & D-trehalose.
Negative results for hydrolysis of starch, formation of levan from sucrose, reduction of nitrate to nitrite, denitrification, arginine
dihydrolase, DNase, indole production, H2S production, assimilation of: N-acetyl-D-galactosamine, adonitol, D-arabitol,
alpha-cyclodextrin, dextrin, L-fucose, gentiobiose, glucose 1-phosphate, methyl beta-D-glucoside, alpha-D-lactose, lactulose,
maltose, D-melibiose, D-raffinose, turanose, xylitol, sebacic acid, L-phenylalanine, thymidine, phenylethylamine, 2,3-butanediol,
i-erythritol, glucose 6-phosphate, glycogen, glycolyl L-aspartic acid & D-psicose.
Variable results for gelatinase, casein hydrolysis, utilization of: N-acetyl-D-glucosamine, D-cellobiose, L-rhamnose, alpha-
hydroxybutyric acid, gamma-hydroxybutyric acid, DL-lactic acid, hydroxy-L-proline, L-ornithine, D-serine, DL-carnitine, putrescine,
2-aminoethanol, DL-alpha-glycerolphosphate, p-hydroxyphenylacetic acid & D-sorbitol.
(c) Costin Stoica