| Kosakonia radicincitans |
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Pseudomonadota (Proteobacteria), Class Gammaproteobacteria, Order Enterobacteriales, Family Enterobacteriaceae,
Genus Kosakonia, Kosakonia radicincitans (Kampfer et al. 2005) Brady et al. 2013.
Old synonym: Enterobacter radicincitans Kampfer et al. 2005.
Species description is based on a single isolate.
Genus Kosakonia, Kosakonia radicincitans (Kampfer et al. 2005) Brady et al. 2013.
Old synonym: Enterobacter radicincitans Kampfer et al. 2005.
Species description is based on a single isolate.
Gram-negative spherical or coccoid short rods, 1.0-1.6 x 0.8-1.2 μm. Motile.
Colonies on Nutrient agar are beige pigmented, 2-3 mm in diameter and mucoid.
Grows well on Tryptone-soy agar, R2A agar, Nutrient agar and MacConkey Agar at 30
and 36 ºC and on Tryptone-soy agar at 25, 28, 30, and 36 ºC. Moderate growth at 20
ºC and no growth at 4, 10, 15, 45 ºC or above. Facultatively anaerobic.
Grows well on Tryptone-soy agar, R2A agar, Nutrient agar and MacConkey Agar at 30
and 36 ºC and on Tryptone-soy agar at 25, 28, 30, and 36 ºC. Moderate growth at 20
ºC and no growth at 4, 10, 15, 45 ºC or above. Facultatively anaerobic.
Isolated from the phyllosphere of winter wheat.
Undetermined. Nitrogen-fixing bacterium.
- Kampfer P, Ruppel S, Remus R. Enterobacter radicincitans sp. nov., a plant growth promoting species of the family
Enterobacteriaceae. Syst Appl Microbiol 2005; 28:213-221. - Li CY, Zhou YL, Ji J, Gu CT. Reclassification of Enterobacter oryziphilus and Enterobacter oryzendophyticus as Kosakonia
oryziphila comb. nov. and Kosakonia oryzendophytica comb. nov. Int J Syst Evol Microbiol 2016; 66:2780-2783. - Brady C, Cleenwerck I, Venter S, Coutinho T, De Vos P. Taxonomic evaluation of the genus Enterobacter based on multilocus
sequence analysis (MLSA): proposal to reclassify E. nimipressuralis and E. amnigenus into Lelliottia gen. nov. as Lelliottia
nimipressuralis comb. nov. and Lelliottia amnigena comb. nov., respectively, E. gergoviae and E. pyrinus into Pluralibacter gen.
nov. as Pluralibacter gergoviae comb. nov. and Pluralibacter pyrinus comb. nov., respectively, E. cowanii, E. radicincitans, E.
oryzae and E. arachidis into Kosakonia gen. nov. as Kosakonia cowanii comb. nov., Kosakonia radicincitans comb. nov.,
Kosakonia oryzae comb. nov. and Kosakonia arachidis comb. nov., respectively, and E. turicensis, E. helveticus and E. pulveris
into Cronobacter as Cronobacter zurichensis nom. nov., Cronobacter helveticus comb. nov. and Cronobacter pulveris comb. nov.,
respectively, and emended description of the genera Enterobacter and Cronobacter. Syst Appl Microbiol 2013; 36:309-319. - Wang C, Wu W, Wei L, Feng Y, Kang M, Xie Y, Zong Z. Kosakonia quasisacchari sp. nov. recovered from human wound secretion
in China. Int J Syst Evol Microbiol 2019; 69:3164-3169.
Positive results for arginine dihydrolase, catalase, citrate utilization, esculin hydrolysis, beta-galactosidase (ONPG), malonate
utilization, nitrate reduction, Voges-Proskauer test (48h incubation), acid production from L-arabinose, cellobiose, dulcitol, glucose,
lactose (48 h), maltose, D-mannose, D-mannitol, L-rhamnose, sucrose, salicin, sorbitol, trehalose, and D-xylose.
Can utilize as sole carbon source N-acetylglucosamine, L-arabinose, L-arbutin, D-cellobiose, D-galactose, D-fructose, gluconate,
D-glucose, D-maltose, D-mannose, L-rhamnose, D-ribose, sucrose, salicine, D-trehalose, D-xylose, D-maltitol, D-sorbitol,
D-mannitol, acetate, cis-aconitate, transaconitate, citrate, fumarate, glutarate, DL-lactate, L-malate, pyruvate, L-aspartate, L-alanine,
L-proline, and L-serine.
Negative results for indole production, H2S production, lysine decarboxylase, methyl red test, ornithine decarboxylase, oxidase,
tryptophane deaminase, acid production from adonitol, D-arabitol, erythritol, alpha-methyl-D-glucoside, inositol, methyl-D-glucoside,
melibiose, and raffinose.
No utilization of N-acetylgalactosamine, alpha-D-melibiose, adonitol, i-inositol, putrescine, propionate, adipate, azelate,
4-aminobutyrate, DL-3 hydroxybutyrate, mesaconate, itaconate, 2-oxoglutarate, suberate, beta-alanine, L-ornithine, L-phenylalanine,
L-histidine, L-leucine, L-tryptophane, 3- and 4-hydroxybenzoate, and phenylacetate.
utilization, nitrate reduction, Voges-Proskauer test (48h incubation), acid production from L-arabinose, cellobiose, dulcitol, glucose,
lactose (48 h), maltose, D-mannose, D-mannitol, L-rhamnose, sucrose, salicin, sorbitol, trehalose, and D-xylose.
Can utilize as sole carbon source N-acetylglucosamine, L-arabinose, L-arbutin, D-cellobiose, D-galactose, D-fructose, gluconate,
D-glucose, D-maltose, D-mannose, L-rhamnose, D-ribose, sucrose, salicine, D-trehalose, D-xylose, D-maltitol, D-sorbitol,
D-mannitol, acetate, cis-aconitate, transaconitate, citrate, fumarate, glutarate, DL-lactate, L-malate, pyruvate, L-aspartate, L-alanine,
L-proline, and L-serine.
Negative results for indole production, H2S production, lysine decarboxylase, methyl red test, ornithine decarboxylase, oxidase,
tryptophane deaminase, acid production from adonitol, D-arabitol, erythritol, alpha-methyl-D-glucoside, inositol, methyl-D-glucoside,
melibiose, and raffinose.
No utilization of N-acetylgalactosamine, alpha-D-melibiose, adonitol, i-inositol, putrescine, propionate, adipate, azelate,
4-aminobutyrate, DL-3 hydroxybutyrate, mesaconate, itaconate, 2-oxoglutarate, suberate, beta-alanine, L-ornithine, L-phenylalanine,
L-histidine, L-leucine, L-tryptophane, 3- and 4-hydroxybenzoate, and phenylacetate.
(c) Costin Stoica
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