| Pseudomonas capsici |
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Pseudomonadota (Proteobacteria), Class Gammaproteobacteria, Order Pseudomonadales, Family Pseudomonadaceae,
Genus Pseudomonas, Pseudomonas capsici Zhao et al. 2021.
Genus Pseudomonas, Pseudomonas capsici Zhao et al. 2021.
Gram-negative rods, 0.7 x 2.4 µm. Motile by multiple polar flagella. Non-spore-forming.
Colonies on nutrient agar medium are light cream, opaque, round and 1.0–2.0 mm
diameter after incubation at 28 ºC for 24 h. Fluorescent pigment is produced on King’
s B medium. Grows at temperature of 4-37 ºC (optimum 28-30 ºC), at pH values of
5.0-6.0 and in the presence of 0-4% (w/v) NaCl. Aerobic.
diameter after incubation at 28 ºC for 24 h. Fluorescent pigment is produced on King’
s B medium. Grows at temperature of 4-37 ºC (optimum 28-30 ºC), at pH values of
5.0-6.0 and in the presence of 0-4% (w/v) NaCl. Aerobic.
Isolated from symptomatic pepper foliage (Capsicum annuum) in Georgia, USA.
Plant pathogen isolated from seedlings displaying water-soaked, dark brown-to-black, necrotic lesions on pepper leaves.
Can induce a hypersensitive reaction on tobacco. Positive for potato rot activity.
Can induce a hypersensitive reaction on tobacco. Positive for potato rot activity.
- Zhao M, Koirala S, Chen HC, Gitaitis R, Kvitko B, Dutta B. Pseudomonas capsici sp. nov., a plant-pathogenic bacterium isolated from
pepper leaf in Georgia, USA. Int J Syst Evol Microbiol 2021; 71:4971. - Lu CH, Han TH, Jiang N, Gai XT, Cao ZH, Zou SY, Chen W, Ma JH, Lin ZL, Li J, et al. Pseudomonas lijiangensis sp. nov., a novel
phytopathogenic bacterium isolated from black spots of tobacco. Int J Syst Evol Microbiol 2022; 72:5591.
Positive results for acid and alkaline phosphatase, catalase, beta-glucosidase, nitrate reduction to nitrite, oxidase and urease.
Can assimilate (API 20 NE): glucose, arabinose, mannose, mannitol, gluconate, caprate, malate and citrate.
Can utilize as sole carbon source (Biolog GEN III): alpha-D-glucose, D-mannose, D-mannitol, methyl pyruvate, gamma-amino-butyric
acid, D-fructose, D-arabitol, L-alanine, D-galactose, myo-inositol, D-gluconic acid, L-lactic acid, glycerol, L-aspartic acid, citric acid,
D-fucose, L-glutamic acid, glucuronamide, alpha-keto-glutaric acid, L-fucose, D-fructose-6-phosphate, mucic acid, D- and L-malic
acid, propionic acid, D-aspartic acid, L-pyroglutamic acid, quinic acid, acetic acid, inosine, L-serine and D-saccharic acid.
Negative results for arginine dihydrolase, esterase lipase (C8), gelatin hydrolysis, beta-galactosidase, indole production, lipase
(C14) and valine arylamidase.
No assimilation of: N-acetyl-glucosamine, maltose, adipate and phenylacetate.
No utilization of: gentibiose, Tween 40, D-sorbitol, L-galactonic acid and sucrose.
Can assimilate (API 20 NE): glucose, arabinose, mannose, mannitol, gluconate, caprate, malate and citrate.
Can utilize as sole carbon source (Biolog GEN III): alpha-D-glucose, D-mannose, D-mannitol, methyl pyruvate, gamma-amino-butyric
acid, D-fructose, D-arabitol, L-alanine, D-galactose, myo-inositol, D-gluconic acid, L-lactic acid, glycerol, L-aspartic acid, citric acid,
D-fucose, L-glutamic acid, glucuronamide, alpha-keto-glutaric acid, L-fucose, D-fructose-6-phosphate, mucic acid, D- and L-malic
acid, propionic acid, D-aspartic acid, L-pyroglutamic acid, quinic acid, acetic acid, inosine, L-serine and D-saccharic acid.
Negative results for arginine dihydrolase, esterase lipase (C8), gelatin hydrolysis, beta-galactosidase, indole production, lipase
(C14) and valine arylamidase.
No assimilation of: N-acetyl-glucosamine, maltose, adipate and phenylacetate.
No utilization of: gentibiose, Tween 40, D-sorbitol, L-galactonic acid and sucrose.
(c) Costin Stoica
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