| Pseudomonas purpurea |
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Pseudomonadota (Proteobacteria), Class Gammaproteobacteria, Order Pseudomonadales, Family Pseudomonadaceae,
Genus Pseudomonas, Pseudomonas purpurea Poli et al. 2024.
Species description is based on a single isolate.
Genus Pseudomonas, Pseudomonas purpurea Poli et al. 2024.
Species description is based on a single isolate.
Gram-negative rods, 1.6 x 3.3µm. Motile by two polar flagella. Non-spore-forming.
Colonies are translucent and compact. After 48 h of growth, the cells produce a
diffusible light purple pigment. In R2A medium, cells can grow between 20 and 28 ºC
(optimum 28 ºC). Can grow between pH 5 and pH 7 and in 1% NaCl. Aerobic.
diffusible light purple pigment. In R2A medium, cells can grow between 20 and 28 ºC
(optimum 28 ºC). Can grow between pH 5 and pH 7 and in 1% NaCl. Aerobic.
Isolated from the rhizosphere of wheat in Grandcour, Switzerland.
Resistant to rifamycin SV, lincomycin, guanidine HCl, niaproof 4, vancomycin and potassium tellurite.
Resistant to rifamycin SV, lincomycin, guanidine HCl, niaproof 4, vancomycin and potassium tellurite.
Undetermined.
- Poli N, Keel CJ, Garrido-Sanz D. Expanding the Pseudomonas diversity of the wheat rhizosphere: four novel species antagonizing
fungal phytopathogens and with plant-beneficial properties. Front Microbiol 2024; 15:1440341.
Positive results for arginine dihydrolase (weak), beta-glucosidase, beta-galactosidase and urease (weak).
Can utilize (API 20 NE): glucose, N-acetyl-glucosamine, potassium gluconate, capric acid, malate and trisodium citrate.
Can oxidize (API 50 CH): amygdalin (weak), L-arabinose, esculin ferric citrate, D-cellobiose, D-saccharose and D-fucose.
Can utilize as sole carbon source (Biolog GEN III): D-trehalose, alpha-D-glucose, glycerol, L-histidine, D-gluconic acid, L-lactic acid,
citric acid, alpha-keto-glutaric acid, L-malic acid, Tween 40, gamma-amino-butyric acid and beta-hydroxy-D,L-butyric acid. All other
tests are negative.
Negative results for fermentation of glucose, gelatinase, indole production and reduction of nitrates to nitrites.
No assimilation of: adipic acid, L-arabinose, manose, maltose, mannitol and phenylacetic acid.
Can utilize (API 20 NE): glucose, N-acetyl-glucosamine, potassium gluconate, capric acid, malate and trisodium citrate.
Can oxidize (API 50 CH): amygdalin (weak), L-arabinose, esculin ferric citrate, D-cellobiose, D-saccharose and D-fucose.
Can utilize as sole carbon source (Biolog GEN III): D-trehalose, alpha-D-glucose, glycerol, L-histidine, D-gluconic acid, L-lactic acid,
citric acid, alpha-keto-glutaric acid, L-malic acid, Tween 40, gamma-amino-butyric acid and beta-hydroxy-D,L-butyric acid. All other
tests are negative.
Negative results for fermentation of glucose, gelatinase, indole production and reduction of nitrates to nitrites.
No assimilation of: adipic acid, L-arabinose, manose, maltose, mannitol and phenylacetic acid.
(c) Costin Stoica
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