| Pseudomonas fildesensis |
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Pseudomonadota (Proteobacteria), Class Gammaproteobacteria, Order Pseudomonadales, Family Pseudomonadaceae,
Genus Pseudomonas, Pseudomonas fildesensis Pavlov et al. 2020.
Species description is based on a single isolate.
Genus Pseudomonas, Pseudomonas fildesensis Pavlov et al. 2020.
Species description is based on a single isolate.
Gram-negative rods, 0.6-0.7 x 2.1-2.3 µm. Motile by multiple polar flagella.
Non-spore-forming.
Non-spore-forming.
After 48 h incubation at 25 ºC on Lysogeny agar, colonies are 1 mm in diameter, round,
convex, beige, bright and with entire margins. Can grow in LB at 4-30 ºC (optimum at 25
ºC) and in up to 4% NaCl (w/v) (optimum at 1% NaCl). No growth at 37 ºC. A fluorescent
pigment is produced on King B medium. Can grow aerobically and anaerobically only in
the presence of nitrate.
convex, beige, bright and with entire margins. Can grow in LB at 4-30 ºC (optimum at 25
ºC) and in up to 4% NaCl (w/v) (optimum at 1% NaCl). No growth at 37 ºC. A fluorescent
pigment is produced on King B medium. Can grow aerobically and anaerobically only in
the presence of nitrate.
Isolated from a sample of soil temporarily covered by rainwater, in the vicinity of Fildes Bay, King George Island (South Shetlands
Islands, Antarctica).
Islands, Antarctica).
Undetermined.
- Pavlov MS, Lira F, Martinez JL, Olivares-Pacheco J, Marshall SH. Pseudomonas fildesensis sp. nov., a psychrotolerant bacterium
isolated from Antarctic soil of King George Island, South Shetland Islands. Int J Syst Evol Microbiol 2020; 70:3255-3263.
Positive results for catalase, aesculin hydrolysis, gelatin hydrolysis, nitrate reduction and oxidase.
Can assimilate (API 20 NE): glucose, arabinose, mannitol, gluconate, caprate, malate, citrate, mannose, N-acetylglucosamine and
adipate.
Can utilize (Biolog GEN III): D-glucuronic acid (weak), alpha-D-glucose, citric acid, D-sorbitol (weak), p-hydroxyphenylacetic acid,
D-fucose (weak), L-glutamic acid, glucuronamide (weak), D-manose (weak), alpha-keto-glutaric acid (weak), D-mannitol (weak),
D-galacturonic acid, methyl pyruvate (weak), gamma-aminobutyric acid, mucic acid, D-fructose (weak), D-arabitol (weak), L-alanine,
L-galactonic acid lactone, D-trehalose, L-pyroglutamic acid (weak), quinic acid, D-galactose (weak), L-malic acid, myo-inositol (weak),
acetic acid, L-arginine, D-gluconic acid, L-lactic acid, inosine (weak), beta-hydroxy-D,L-butyric acid (weak), D-saccharic acid,
bromo-succinic acid (weak), glycerol (weak) and L-aspartic acid (weak).
Negative results for arginine dihydrolase, beta-galactosidase, indole production, urease, acid production from glucose.
No assimilation of: maltose and phenylacetate.
No utilization of: D-raffinose, alpha-keto-butyric acid, gelatin, gentiobiose, pectin, N-acetyL-D-glucosamine, Tween 40, D-salicin,
D-glucose-6-phosphate, dextrin, alpha-D-lactose, acetoacetic acid, glycyL-L-proline, sucrose, N-acetyL-beta-D-mannosamine,
L-fucose, D-fructose-6-phosphate, D-maltose, L-histidine (weak), D-melibiose, D-malic acid, propionic acid, D-turanose,
N-acetyL-D-galactosamine, D-lactic acid methyl ester, L-rhamnose, alpha-hydroxybutyric acid, D-aspartic acid,
beta-methyl-D-glucoside, stachyose, N-acetyl-neuraminic acid, D- and L-serine, D-cellobiose, 3-methyl-glucose and formic acid.
Can assimilate (API 20 NE): glucose, arabinose, mannitol, gluconate, caprate, malate, citrate, mannose, N-acetylglucosamine and
adipate.
Can utilize (Biolog GEN III): D-glucuronic acid (weak), alpha-D-glucose, citric acid, D-sorbitol (weak), p-hydroxyphenylacetic acid,
D-fucose (weak), L-glutamic acid, glucuronamide (weak), D-manose (weak), alpha-keto-glutaric acid (weak), D-mannitol (weak),
D-galacturonic acid, methyl pyruvate (weak), gamma-aminobutyric acid, mucic acid, D-fructose (weak), D-arabitol (weak), L-alanine,
L-galactonic acid lactone, D-trehalose, L-pyroglutamic acid (weak), quinic acid, D-galactose (weak), L-malic acid, myo-inositol (weak),
acetic acid, L-arginine, D-gluconic acid, L-lactic acid, inosine (weak), beta-hydroxy-D,L-butyric acid (weak), D-saccharic acid,
bromo-succinic acid (weak), glycerol (weak) and L-aspartic acid (weak).
Negative results for arginine dihydrolase, beta-galactosidase, indole production, urease, acid production from glucose.
No assimilation of: maltose and phenylacetate.
No utilization of: D-raffinose, alpha-keto-butyric acid, gelatin, gentiobiose, pectin, N-acetyL-D-glucosamine, Tween 40, D-salicin,
D-glucose-6-phosphate, dextrin, alpha-D-lactose, acetoacetic acid, glycyL-L-proline, sucrose, N-acetyL-beta-D-mannosamine,
L-fucose, D-fructose-6-phosphate, D-maltose, L-histidine (weak), D-melibiose, D-malic acid, propionic acid, D-turanose,
N-acetyL-D-galactosamine, D-lactic acid methyl ester, L-rhamnose, alpha-hydroxybutyric acid, D-aspartic acid,
beta-methyl-D-glucoside, stachyose, N-acetyl-neuraminic acid, D- and L-serine, D-cellobiose, 3-methyl-glucose and formic acid.
(c) Costin Stoica
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