Colonies on sheep blood agar after 24h incubation at 37 ºC, are nonhemolytic, gray, 1
mm in diameter. Growth occurs at  
25-42 ºC, optimally at 37 ºC. Can grow in 1-2%
(w/v) NaCl.
Can grow on MacConkey agar. Facultatively anaerobic. 5% CO2 does not
enhance growth.
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Proteobacteria, Class Betaproteobacteria, Order Neisseriales, Family Chromobacteriaceae, Genus Laribacter, Laribacter
hongkongensis
Yuen et al. 2002, type species of the genus.
Gram-negative, seagull-shaped or spiral rods, 0.2-0.5 x 1.0-1.6 μm. Nonflagellated
and nonmotile
. Spores are not formed.
Isolated from the blood and empyema of a cirrhotic 54-year-old Chinese patient.
Sensitive to ampicillin, cephalothin, cefuroxime,
ceftazidime, ceftriaxone, imipenem, azetreonam, erythromycin, clarithromycin,
gentamicin, amikacin, ciprofloxacin, levofloxacin,
chloramphenicol, tetracycline, co-trimoxazole, and polymyxin B.
Resistant to vancomycin, clindamycin, metronidazole, and 0/129 vibriostatic agent.
Strain was isolated from sterile body fluids from a patient with local and systemic responses (high fever, leukocytosis and neutrophilia).
  1. Yuen K.Y., Woo P.C.Y., Teng J.L.L., Leung K.W., Wong M.K.M. and Lau S.K.P.: Laribacter hongkongensis gen. nov., sp. nov., a novel
    Gram-negative bacterium isolated from a cirrhotic patient with bacteremia and empyema. J. Clin. Microbiol., 2001, 39, 4227-4232.
  2. Euzeby (J.P.): List of Bacterial Names with Standing in Nomenclature: a folder available on the Internet. Int. J. Syst. Bacteriol., 1997,
    47, 590-592. (List of Prokaryotic names with Standing in Nomenclature. http://www.bacterio.net).
Positive results for arginine dihydrolase, catalase, nitrate reduction & oxidase.
Can utilize gluconate, caprate & adipate.


Negative results for
esculin hydrolysis, beta-galactosidase, gelatin hydrolysis, H2S production, indole production, lysine
decarboxylase, ornithine decarboxylase, Voges-Proskauer reaction.

Does not ferment, oxidize, or assimilate: adonitol, amygdalin, arabinose, dulcitol, glucose, inositol, lactose, maltose, manni
tol,
mannose, melibiose, raffinose, rhamnose, salicin
, sorbitol, sucrose & xylose.
No utilization of: citrate, malonate, N-acetylglucosamine, gluconate & phenylacetate.
Laribacter hongkongensis
(c) Costin Stoica
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