| Pseudomonas saxonica |
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Pseudomonadota (Proteobacteria), Class Gammaproteobacteria, Order Pseudomonadales, Family Pseudomonadaceae,
Genus Pseudomonas, Pseudomonas saxonica Hofmann et al. 2020.
Genus Pseudomonas, Pseudomonas saxonica Hofmann et al. 2020.
Gram-negative rods, 1.0-2.0 x 1.6-3.5 µm. Motile. Non-spore-forming.
Smooth, translucent, glossy, round, and flat colonies of 1-2mm diameter appear after
incubation on TSA at 30 ºC for 24h. Additionally, smooth, beige, glossy, round and
convex colonies that are brighter and have a smaller diameter of 0.5-1mm are
present. Production of fluorescent and non-fluorescent pigments on King B agar is
variable. No pigment is produced on King A agar. Grows on cetrimide agar and R2A
agar. Shows no beta-haemolysis on blood agar. Grows at 4-34 ºC (optimally at 25-29
ºC) pH values between 5.5 and 8.0 (optimum, pH 6.0-7.0) and in 7.0% NaCl (w/v;
optimum, 0.5-1.0%). Aerobic; no anaerobic growth.
incubation on TSA at 30 ºC for 24h. Additionally, smooth, beige, glossy, round and
convex colonies that are brighter and have a smaller diameter of 0.5-1mm are
present. Production of fluorescent and non-fluorescent pigments on King B agar is
variable. No pigment is produced on King A agar. Grows on cetrimide agar and R2A
agar. Shows no beta-haemolysis on blood agar. Grows at 4-34 ºC (optimally at 25-29
ºC) pH values between 5.5 and 8.0 (optimum, pH 6.0-7.0) and in 7.0% NaCl (w/v;
optimum, 0.5-1.0%). Aerobic; no anaerobic growth.
Isolated from skimmed milk concentrate and bovine raw milk in Germany.
Undetermined.
- Hofmann K, Huptas C, Doll EV, Scherer S, Wenning M. Pseudomonas saxonica sp. nov., isolated from raw milk and skimmed milk
concentrate. Int J Syst Evol Microbiol 2020; 70:935-943. - Lick S, Wibberg D, Winkler A, Blom J, Grimmler C, Goesmann A, Kalinowski J, Krockel L. Pseudomonas paraversuta sp. nov.
isolated from refrigerated dry-aged beef. Int J Syst Evol Microbiol 2021; 71:4822.
Positive results for arginine dehydrolase, catalase, citrate utilization, aesculin hydrolysis, lipase, oxidase, acid production from: D- and
L-arabinose, D-arabitol, cellobiose, D-fructose, D- and L-fucose, D-galactose, D-glucose, glycerol, gentiobiose, lactose, D-lyxose, D-
mannose, D-mannitol, maltose, melibiose, D-ribose, L-rhamnose, D-sorbitol, L-xylose (only the type strain is positive) and D-xylose.
Can utilize as sole carbon source: L-arabinose, fructose, galactose, mannose and mannitol.
Negative results for gelatin hydrolysis, beta-galactosidase, H2S production, indole production, lysine decarboxylase, nitrate reduction,
denitrification, ornithine decarboxylase, tryptophan deaminase, urease, proteolysis on skimmed milk agar, starch hydrolysis, Voges–
Proskauer reaction, acid production from: D-adonitol, N-acetylglucosamine, amygdalin, arbutin, L-arabitol, dulcitol, erythritol, methyl
alpha-D-glucoside, glycogen, inulin, inositol, potassium-gluconate, methyl alpha-D-mannoside, melezitose, raffinose, L-sorbose,
salicin, sucrose, trehalose, turanose, D-tagatose, xylitol and methyl beta-D-xylopyranose.
No utilization of: myo-inositol, sucrose and trehalose.
L-arabinose, D-arabitol, cellobiose, D-fructose, D- and L-fucose, D-galactose, D-glucose, glycerol, gentiobiose, lactose, D-lyxose, D-
mannose, D-mannitol, maltose, melibiose, D-ribose, L-rhamnose, D-sorbitol, L-xylose (only the type strain is positive) and D-xylose.
Can utilize as sole carbon source: L-arabinose, fructose, galactose, mannose and mannitol.
Negative results for gelatin hydrolysis, beta-galactosidase, H2S production, indole production, lysine decarboxylase, nitrate reduction,
denitrification, ornithine decarboxylase, tryptophan deaminase, urease, proteolysis on skimmed milk agar, starch hydrolysis, Voges–
Proskauer reaction, acid production from: D-adonitol, N-acetylglucosamine, amygdalin, arbutin, L-arabitol, dulcitol, erythritol, methyl
alpha-D-glucoside, glycogen, inulin, inositol, potassium-gluconate, methyl alpha-D-mannoside, melezitose, raffinose, L-sorbose,
salicin, sucrose, trehalose, turanose, D-tagatose, xylitol and methyl beta-D-xylopyranose.
No utilization of: myo-inositol, sucrose and trehalose.
(c) Costin Stoica
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