| Pseudomonas lactis |
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Pseudomonadota (Proteobacteria), Class Gammaproteobacteria, Order Pseudomonadales, Family Pseudomonadaceae,
Genus Pseudomonas, Pseudomonas lactis von Neubeck et al. 2017.
Genus Pseudomonas, Pseudomonas lactis von Neubeck et al. 2017.
Gram-negative rods, 0.75 x 1.5-6.5 µm. Motile. Non-spore-forming.
Colonies are beige, smooth, round, about 0.5-1.0 mm in diameter after incubation at
25 ºC for 24 h on TSG. Fluorescent pigment is produced on King B agar. No
pyocyanin is formed on King A agar. Haemolysis is variable. Grows at 4-35 ºC
(optimum growth temperature is 27-31 ºC), at pH 5-8 (optimum pH 6.0-7.0) and in
0-6% NaCl (w/v). Growth can be detected on MacCOnkey agar, R2A agar and
cetrimide agar. Proteolytic activity on skimmed milk agar at both 25 and 4 ºC. Aerobic,
no anaerobic growth.
25 ºC for 24 h on TSG. Fluorescent pigment is produced on King B agar. No
pyocyanin is formed on King A agar. Haemolysis is variable. Grows at 4-35 ºC
(optimum growth temperature is 27-31 ºC), at pH 5-8 (optimum pH 6.0-7.0) and in
0-6% NaCl (w/v). Growth can be detected on MacCOnkey agar, R2A agar and
cetrimide agar. Proteolytic activity on skimmed milk agar at both 25 and 4 ºC. Aerobic,
no anaerobic growth.
Isolated from raw bovine milk and poultry feces.
Undetermined.
- von Neubeck M, Huptas C, Gluck C, Krewinkel M, Stoeckel M, Stressler T, Fischer L, Hinrichs J, Scherer S, Wenning M.
Pseudomonas lactis sp. nov. and Pseudomonas paralactis sp. nov., isolated from bovine raw milk. Int J Syst Evol Microbiol 2017; 67:
1656-1664. - Olofinsae SA, Adeleke OE, Ibeh BO. Occurrence of Pseudomonas lactis and Pseudomonas paralactis Amongst Non-Lactose-
Fermenting Bacterial Isolates in Chickens and Their Antimicrobial Resistance Patterns. Microbiology Insights. 2022;15. doi:10.1177
/11786361221130313 - Ramirez-Bahena MH, Salazar S, Santin PJ, Sanchez-Rodriguez JA, Fernandez-Pascual M, Igual JM, Santa-Regina I, Peix A.
Pseudomonas edaphica sp. nov., isolated from rhizospheric soil of Cistus ladanifer L. in Spain. Int J Syst Evol Microbiol 2019; 69:
3141-3147. - Lick S, Krockel L, Wibberg D, Winkler A, Blom J, Bantleon A, Goesmann A, Kalinowski J. Pseudomonas carnis sp. nov., isolated
from meat. Int J Syst Evol Microbiol 2020; 70:1528-1540. - Saticioglu, I. B., Mulet, M., Duman, M., Altun, S., Gomila, M., Lalucat, J., & Garcia-Valdes, E. (2022). First occurrence and whole-
genome comparison of Pseudomonas haemolytica isolated in farmed rainbow trout. Aquaculture Research, 53, 4472–4486. https:
//doi.org/10.1111/are.15944.
Positive results for arginine dihydrolase, acid phosphatase, catalase, gelatin hydrolysis, oxidase, acid production from: D-adonitol, D-
and L-arabitol, L-arabinose, cellobiose, erythritol, D-fucose, D-fructose, D-galactose, D-glucose, gentiobiose, glycerol, inositol,
D-lyxose, D-mannitol, D-mannose, melibiose, L-rhamnose, D-ribose, D-sorbitol, sucrose, trehalose, xylitol and D-xylose.
Can utilize: caprate, citrate, malate, itaconate, propionate (weakly), D-adonitol, D- and L-arabitol, D-fructose, D-glucose, D-galactose,
D-lyxose, D-mannitol, D-mannose, D-ribose, D-sorbitol, sucrose, D-xylose, erythritol, glycerol, inositol, L-arabinose,
N-acetylglucosamine, potassium gluconate and xylitol. Contradictory results for trehalose utilization.
Negative results for alkaline phosphatase, esculin hydrolysis, beta-galactosidase, H2S production, indole production, nitrate reduction,
lysine decarboxylase, ornithine decarboxylase, starch hydrolysis, tryptophan deaminase, urease, Voges-Proskauer test.
No utilization of: L-histidine, phenylacetate, adipic acid, amygdalin, arbutin, D-arabinose, cellobiose, D-fucose, lactose, maltose,
melezitose, D-melibiose, raffinose, D-tagatose, turanose, dulcitol, gentiobiose, glycogen, L-fucose, L-rhamnose, L-sorbose, L-xylose,
methyl alpha-D-glucoside, methyl alpha-D-mannoside, methyl beta-D-xylopyranose and salicin.
and L-arabitol, L-arabinose, cellobiose, erythritol, D-fucose, D-fructose, D-galactose, D-glucose, gentiobiose, glycerol, inositol,
D-lyxose, D-mannitol, D-mannose, melibiose, L-rhamnose, D-ribose, D-sorbitol, sucrose, trehalose, xylitol and D-xylose.
Can utilize: caprate, citrate, malate, itaconate, propionate (weakly), D-adonitol, D- and L-arabitol, D-fructose, D-glucose, D-galactose,
D-lyxose, D-mannitol, D-mannose, D-ribose, D-sorbitol, sucrose, D-xylose, erythritol, glycerol, inositol, L-arabinose,
N-acetylglucosamine, potassium gluconate and xylitol. Contradictory results for trehalose utilization.
Negative results for alkaline phosphatase, esculin hydrolysis, beta-galactosidase, H2S production, indole production, nitrate reduction,
lysine decarboxylase, ornithine decarboxylase, starch hydrolysis, tryptophan deaminase, urease, Voges-Proskauer test.
No utilization of: L-histidine, phenylacetate, adipic acid, amygdalin, arbutin, D-arabinose, cellobiose, D-fucose, lactose, maltose,
melezitose, D-melibiose, raffinose, D-tagatose, turanose, dulcitol, gentiobiose, glycogen, L-fucose, L-rhamnose, L-sorbose, L-xylose,
methyl alpha-D-glucoside, methyl alpha-D-mannoside, methyl beta-D-xylopyranose and salicin.
(c) Costin Stoica
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