| Rhizobacter fulvus |
Positive results foracid and alkaline phosphatase, esculin hydrolysis, nitrate reduction to nitrite, oxidase and Voges-Proskauer
test (weak).
Can utilize: adipic acid, malic acid, D-fructose, D-lyxose, L-xylose, sucrose (weakly), acetate, 3-hydroxybutylate, 3-hydroxybenzoate,
citrate, lactate, D-mannitol, D-sorbitol, L-asparagine, L-aspartate, L-glutamine, L-glutamate, L-phenylalanine, L-proline, methanol,
ethanol, butanol, phenol, toluene, benzene, ethyl benzene, benzoate, 2,4-dihydroxybenzoate, 2,5-dihydroxybenzoate,
2,6-dihydroxybenzoate and 3,4-dihydroxybenzoate.
Negative results for arginine dihydrolase, catalase, chitin hydrolysis, CM-cellulose hydrolysis, casein hydrolysis, DNase, gelatin
hydrolysis, beta-galactosidase, H2S production, indole production, lysine decarboxylase,ornithine decarboxylase, tryptophan
deaminase, starch hydrolysis, urease, xylan hydrolysis, acid production from: L-arabinose, amygdalin, D-glucose, inositol,
D-mannitol, D-melibiose, L-rhamnose, D-sorbitol and sucrose.
No utilization of: glucose, N-acetylglucosamine, D-galactose, D-mannose, D-xylose, L-arabinose, trehalose, maltose, D-cellobiose,
D-melibiose, D-raffinose, D-fucose, L-rhamnose, L-sorbose, D-arabinose, D-ribose, D-lactose, D-adonitol, dulcitol, xylitol, inositol,
glycerol, amygdalin, glycogen, inulin, N-acetylglucosamine, dextran, pyruvate, valerate, fumarate, salicin, malate, formate, propionate,
tartrate, gluconate, caprate, maleic acid, phenylacetate, 4-hydroxybenzoate, malonate, glutarate, itaconate, adipate, suberate, oxalate,
succinate, L-alanine, L-arginine, L-histidine, L-cysteine, glycine, L-isoleucine, L-leucine, L-threonine, L-lysine, L-methionine, L-serine,
L-tryptophan, L-tyrosine and L-valine.
test (weak).
Can utilize: adipic acid, malic acid, D-fructose, D-lyxose, L-xylose, sucrose (weakly), acetate, 3-hydroxybutylate, 3-hydroxybenzoate,
citrate, lactate, D-mannitol, D-sorbitol, L-asparagine, L-aspartate, L-glutamine, L-glutamate, L-phenylalanine, L-proline, methanol,
ethanol, butanol, phenol, toluene, benzene, ethyl benzene, benzoate, 2,4-dihydroxybenzoate, 2,5-dihydroxybenzoate,
2,6-dihydroxybenzoate and 3,4-dihydroxybenzoate.
Negative results for arginine dihydrolase, catalase, chitin hydrolysis, CM-cellulose hydrolysis, casein hydrolysis, DNase, gelatin
hydrolysis, beta-galactosidase, H2S production, indole production, lysine decarboxylase,ornithine decarboxylase, tryptophan
deaminase, starch hydrolysis, urease, xylan hydrolysis, acid production from: L-arabinose, amygdalin, D-glucose, inositol,
D-mannitol, D-melibiose, L-rhamnose, D-sorbitol and sucrose.
No utilization of: glucose, N-acetylglucosamine, D-galactose, D-mannose, D-xylose, L-arabinose, trehalose, maltose, D-cellobiose,
D-melibiose, D-raffinose, D-fucose, L-rhamnose, L-sorbose, D-arabinose, D-ribose, D-lactose, D-adonitol, dulcitol, xylitol, inositol,
glycerol, amygdalin, glycogen, inulin, N-acetylglucosamine, dextran, pyruvate, valerate, fumarate, salicin, malate, formate, propionate,
tartrate, gluconate, caprate, maleic acid, phenylacetate, 4-hydroxybenzoate, malonate, glutarate, itaconate, adipate, suberate, oxalate,
succinate, L-alanine, L-arginine, L-histidine, L-cysteine, glycine, L-isoleucine, L-leucine, L-threonine, L-lysine, L-methionine, L-serine,
L-tryptophan, L-tyrosine and L-valine.
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Pseudomonadota (Proteobacteria), Class Gammaproteobacteria, Order Pseudomonadales, Family Pseudomonadaceae,
Genus Rhizobacter, Rhizobacter fulvus (Yoon et al. 2007) Stackebrandt et al. 2009.
Basonym: Methylibium fulvum Yoon et al. 2007.
Genus Rhizobacter, Rhizobacter fulvus (Yoon et al. 2007) Stackebrandt et al. 2009.
Basonym: Methylibium fulvum Yoon et al. 2007.
Gram-negative rods, 0.4-0.5 x 0.8-1.3 µm. Motile by a single polar flagellum.
Colonies after 2 days incubation on R2A agar (Difco) at 25 ºC are circular, smooth,
convex and yellowish. Yellow pigment produced. Growth occurs on TSA, but not on
MacConkey agar. Optimum growth temperature is 25 ºC. No growth at 4 or 37 ºC.
NaCl is not required for growth.
convex and yellowish. Yellow pigment produced. Growth occurs on TSA, but not on
MacConkey agar. Optimum growth temperature is 25 ºC. No growth at 4 or 37 ºC.
NaCl is not required for growth.
Isolated from soil of a ginseng field in Pocheon province (Republic of Korea).
It is the causal agent of bacterial gall of carrots (Daucus carota L.).
The tobacco hypersensitivity reaction is negative.
The tobacco hypersensitivity reaction is negative.
- Yoon MH, Ten LN, Im WT, Lee ST. Methylibium fulvum sp. nov., a member of the Betaproteobacteria isolated from ginseng field
soil, and emended description of the genus Methylibium. Int J Syst Evol Microbiol 2007; 57:2062-2066. - Wei L, Si M, Long M, Zhu L, Li C, Shen X, Wang Y, Zhao L, Zhang L. Rhizobacter bergeniae sp. nov., isolated from the root of
Bergenia scopulosa. Int J Syst Evol Microbiol 2015; 65:479-484.
(c) Costin Stoica
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