| Pseudomonas rhizosphaerae |
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Pseudomonadota (Proteobacteria), Class Gammaproteobacteria, Order Pseudomonadales, Family Pseudomonadaceae,
Genus Pseudomonas, Pseudomonas rhizosphaerae Peix et al. 2003.
Genus Pseudomonas, Pseudomonas rhizosphaerae Peix et al. 2003.
Gram-negative, nonspore-forming, rods, 1.2-2.4 μm in length and 0.8-0.9 μm in
diameter. Motile by one polar flagellum.
diameter. Motile by one polar flagellum.
Colonies on YED agar are circular, convex, yellow, weakly translucent and usually 1-2
mm in diameter after 2 days growth at 28 ºC. No fluorescent pigments produced.
Produce a yellow pigment in media that contain glucose as the carbon source and
form a transparent ‘halo’ around colonies in media that contained insoluble bicalcium
phosphate as the phosphorus source.
Strictly aerobic, growth temperature 22-28 ºC (optimal 25 ºC). Can grow at 4 ºC but not
at 41 ºC. Other media: Nutrient agar.
mm in diameter after 2 days growth at 28 ºC. No fluorescent pigments produced.
Produce a yellow pigment in media that contain glucose as the carbon source and
form a transparent ‘halo’ around colonies in media that contained insoluble bicalcium
phosphate as the phosphorus source.
Strictly aerobic, growth temperature 22-28 ºC (optimal 25 ºC). Can grow at 4 ºC but not
at 41 ºC. Other media: Nutrient agar.
Isolated from the rhizospheric soil of grasses in Spain.
Unknown.
- Peix, Alvaro, Rivas, Raul, Mateos, Pedro F., Martinez-Molina, Eustoquio, Rodriguez-Barrueco, Claudino, Velazquez, Encarna.
Pseudomonas rhizosphaerae sp. nov., a novel species that actively solubilizes phosphate in vitro. Int J Syst Evol Microbiol 2003
53: 2067-2072. - Menendez E, Ramirez-Bahena MH, Fabryova A, Igual JM, Benada O, Mateos PF, Peix A, Kolarik M, Garcia-Fraile P. Pseudomonas
coleopterorum sp. nov., a cellulase-producing bacterium isolated from the bark beetle Hylesinus fraxini. Int J Syst Evol Microbiol
2015; 65:2852-2858.
Positive for catalase, utilization as sole carbon source of: propionate, trehalose, L-arabinose, D-arabinose, D-xylose, ribose, mannose,
galactose, D-fructose, L-sorbose, D-fucose, L-fucose, rhamnose, dulcitol, inositol, sorbitol, mannitol, adonitol, glycerol, erythritol,
D-arabitol, gentiobiose, D-turanose, D-tagatose, glucose, caprate, malate, gluconate, 2-ketogluconate, 5-ketogluconate and citrate.
Negative for arginine dehydrolase, caseinase, gelatinase, beta-galactosidase, indole production, H2S production, esculin hydrolysis,
oxidase, starch hydrolysis, tryptophan deaminase, urease, acid production from glucose, utilization of: sucrose, N-acetylglucosamine,
maltose, adipate and phenylacetate.
galactose, D-fructose, L-sorbose, D-fucose, L-fucose, rhamnose, dulcitol, inositol, sorbitol, mannitol, adonitol, glycerol, erythritol,
D-arabitol, gentiobiose, D-turanose, D-tagatose, glucose, caprate, malate, gluconate, 2-ketogluconate, 5-ketogluconate and citrate.
Negative for arginine dehydrolase, caseinase, gelatinase, beta-galactosidase, indole production, H2S production, esculin hydrolysis,
oxidase, starch hydrolysis, tryptophan deaminase, urease, acid production from glucose, utilization of: sucrose, N-acetylglucosamine,
maltose, adipate and phenylacetate.
(c) Costin Stoica
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