Phylum Proteobacteria, Class Betaproteobacteria, Order Burkholderiales, Family Alcaligenaceae, Genus Kerstersia, Kerstersia
gyiorum Coenye et al. 2003, type species of the genus.
Gram-negative, 1-2 μm long, coccoid cells that occur as single units, in pairs or in
short chains. Motility is strain dependent.
Colonies on nutrient agar are flat or slightly convex with smooth margins with a colour
ranging from white to light brown. Growth occurs at 28 and 42 ºC. Grows in 0 to 4.5%
Isolated from various human clinical samples (leg wounds, ankle wound, sputum and faces).
- Coenye (T.), Vancanneyt (M.), Cnockaert (M.C.), Falsen (E.), Swings (J.) and Vandamme (P.): Kerstersia gyiorum gen. nov., sp.
nov., a novel Alcaligenes faecalis-like organism isolated from human clinical samples, and reclassification of Alcaligenes
denitrificans Rüger and Tan 1983 as Achromobacter denitrificans comb. nov. Int. J. Syst. Evol. Microbiol., 2003, 53, 1825-1831.
Positive results for catalase.
Can assimilate: acetate, propionate, butyrate, n-valerate, n-caproate, heptanoate, pelargonate, caprate, succinate, fumarate, DL-
lactate, DL-lactate plus methionine, DL-3-hydroxybutyrate, D- and L-malate, pyruvate, citrate, phenylacetate, p-hydroxybenzoate, D-and
L-alpha-alanine, L-phenylalanine, L-tyrosine, L-aspartate, L-glutamate, L-ornithine, L-proline, DL-4-aminobutyrate, 2-aminobenzoate,
4-aminobenzoate, amylamine & DL-kynurenine.
Negative results for arginine dihydrolase, amylase, DNase, esculin hydrolysis, beta-galactosidase, gelatinase, H2S production (TSI),
lysine decarboxylase, nitrate reduction, ornithine decarboxylase, oxidase, urease & acid production from glucose (TSI).
No assimilation of: erythritol, D- and L-arabinose, ribose, D- or L-xylose, adonitol, methyl beta-D-xyloside, galactose, D-glucose, D-
fructose, D-mannose, L-sorbose, L-rhamnose, dulcitol, inositol, mannitol, sorbitol, methyl alpha-D-mannoside, methyl alpha-D-
glucoside, N-acetylglucosamine, amygdalin, arbutin, aesculin, salicin, maltose, lactose, melibiose, sucrose, trehalose, inulin, D-
melezitose, raffinose, starch, glycogen, xylitol, D-turanose, D-lyxose, D-tagatose, D- and L-fucose, D- and L-arabitol, 2- and 3-
ketogluconate, oxalate, malonate, glycolate, DL-glycerate, D- and L-tartrate, meso-tartrate, benzoate, o- and m-hydroxybenzoate, D- or
L-mandelate, phthalate, isophthalate, terephthalate, glycine, L-serine, L-histidine, D-tryptophan, trigonelline, L-lysine, L-citrulline, L-
arginine, betaine, creatine, DL-3-aminobutyrate, DL-5-aminovalerate, 3-aminobenzoate, urea, acetamide, sarcosine, ethylamine,
ethanolamine, benzylamine, diaminobutane, spermine, histamine & glucosamine.
Variable results for assimilation of glycerol, gluconate, cellobiose, beta-gentiobiose, isobutyrate, isovalerate, caprylate, glutarate,
adipate, pimelate, suberate, azelate, sebacate, levulinate, 2-ketoglutarate, citraconate, itaconate, mesaconate, aconitate, L-leucine, L-
isoleucine, DL-2-aminobutyrate, L-norleucine, L-valine, DL-norvaline, L-threonine, L-cysteine, L-methionine, L-tryptophan, beta-
alanine, tryptamine & butylamine.
(c) Costin Stoica