Caballeronia humi
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Proteobacteria, Class Betaproteobacteria, Order Burkholderiales, Family Burkholderiaceae, Genus Caballeronia,
Caballeronia humi
(Vandamme et al. 2013) Dobritsa and Samadpour 2016.

Old synonym:
Burkholderia humi Vandamme et al. 2013.
Gram-negative rods with rounded ends, 0.7 x 1.5-2.0 μm, occuring singly or in pairs.
Non-motile. Non-spore-forming.
After 48 h of incubation on trypticase soy agar at 28 ºC, colonies are beige, smooth,
shiny, non-translucent, round, mostly regular in shape with entire edges, ~ 1-1.5 mm
in diameter. Grows on MacConkey agar. Growth occurs at 15-30 ºC and at pH 6-7.  
Most strains don't grow at 37 ºC. No growth at 4 or 42 ºC. Grows in1% and 2%
(weakly) NaCl. Aerobic.
Isolated from short-term grassland (Lolium perene) rhizoshpere soil and bulk soil of fields under maize monoculture on both short-
and long-term arable land, in the Netherlands.
Undetermined.
  1. Dobritsa, A. P. and Samadpour, M. 2016. Transfer of eleven species of the genus Burkholderia to the genus Paraburkholderia and
    proposal of Caballeronia gen. nov. to accommodate twelve species of the genera Burkholderia and Paraburkholderia Int. J. Syst.
    Evol. Microbiol., 66, 2836-2846.
  2. Vandamme, P., De Brandt, E., Houf, K., Salles, J. F., Dirk Van Elsas, J., Spilker, T. and Lipuma, J. J. 2013. Burkholderia humi sp.
    nov., Burkholderia choica sp. nov., Burkholderia telluris sp. nov., Burkholderia terrestris sp. nov. and Burkholderia udeis sp. nov.:
    Burkholderia glathei-like bacteria from soil and rhizosphere soil. Int. J. Syst. Evol. Microbiol., 63, 4707-4718.
Description is based mostly on API 20 NE, API ZYM and Biolog GEN III results.

Positive results for acid and alkaline phosphatase, catalase, leucine arylamidase, C4- and C8-lipase, oxidase, phosphamidase &
Tween 40 hydrolysis.
Can assimilate glucose, mannose, mannitol, N-acetylglucosamine, gluconate, caprate (some strains only weakly), malate, citrate &  
phenylacetate, alpha-D-glucose, D-fructose, D-galactose, D- and L-fucose, L-rhamnose, D-sorbitol, D-arabitol, myo-inositol,
D-glucose 6-phosphate, D-fructose 6-phosphate, D-aspartic acid, glycyl-L-proline, L-alanine, L-arginine, L-aspartic acid, L-glutamic
acid, L-histidine, L-pyroglutamic acid, D-galacturonic acid, L-galatonic acid lactone, D-gluconic acid, D-glucuronic acid,
glucuronamide, muric acid, quinic acid, D-saccharic acid, L-lactic acid, citric acid, D- and L-malic acid, gamma-aminobutyric acid,
acetic acid & formic acid.

Negative results for arginine dihydrolase, casein hydrolysis,  cystine arylamidase, DNase, esculin hydrolysis, alpha-fucosidase,
gelatin liquefaction, alpha- and beta-galactosidase, beta-glucuronidase, alpha- and beta-glucosidase,
N-acetyl-beta-glucosaminidase, indole production, C14-lipase, nitrate reduction, alpha-mannosidase, starch hydrolysis, Tween 20
and 80 hydrolysis, trypsin, chymotrypsin, urease,  valine arylamidase, fermentation of glucose.
No assimilation of arabinose, adipate, alpha-hydroxybutyric acid, alpha-ketobutyric acid, acetoacetic acid, maltose, dextrin, cellobiose,
gentiobiose, sucrose, turanose, stachyose, raffinose, alpha-lactose, melibiose, methyl beta-D-glucoside, D-salicin,
N-acetyl-beta-D-mannosamine, N-acetyl-D-galactosamine, N-acetyl-neuraminic acid, 3-methyl glucose, inosine, D-serine, gelatin,
pectin, & D-lactic acid methyl ester.

Variable results for assimilation of  trehalose, N-acetyl-D-glucosamine, glycerol, L-serine, p-hydroxyphenylacetic acid, methyl
pyruvate, alpha-ketoglutaric acid, bromosuccinic acid, Tween 40 & propionic acid.
(c) Costin Stoica
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