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Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Proteobacteria => Gammaproteobacteria => Pasteurellales => Pasteurellaceae => Actinobacillus => Actinobacillus arthritidis
Christensen, Bisgaard, Angen and Olsen 2002.
Synonyms: Bisgaard Taxon 9 (sorbitol positive strains; isolates sorbitol negative are tentatively designated genomospecies 2,
Christensen et al., 2002 )
Christensen, Bisgaard, Angen and Olsen 2002.
Synonyms: Bisgaard Taxon 9 (sorbitol positive strains; isolates sorbitol negative are tentatively designated genomospecies 2,
Christensen et al., 2002 )
Gram negative, pleomorphic cells (rods). Non-motile. Non-sporulated.
Colonies are circular, raised and regular with an entire margin; the surface of the
colonies is smooth, shiny, grayish and non-transparent. Mucoid and watery cultures
also exist.
2-3 mm diameter after 24 h aerobic incubation at 37 °C. No hemolysis on sheep and
bovine blood agar.
Growth on MacConkey agar is variable. V-factor independent.
colonies is smooth, shiny, grayish and non-transparent. Mucoid and watery cultures
also exist.
2-3 mm diameter after 24 h aerobic incubation at 37 °C. No hemolysis on sheep and
bovine blood agar.
Growth on MacConkey agar is variable. V-factor independent.
Isolated from the oral cavity of apparently healthy horses, as well as from diseased foals and horses (with septicemia and arthritis).
Have been isolated from diseased foals and horses (with septicemia and arthritis).
- Olsen I., MØller K., 2004.Genus II. Actinobacillus . In: Bergey’s Manual of Systematic Bacteriology, Second edition,Vol two, part
B, George M. Garrity (Editor-in-Chief), pp. 866-883. - W.M. Janda, R. Mutters , 2006. Pasteurella, Mannheimia, Actinobacillus, Eikenella, Kingella, Capnocytophaga, and other
miscellaneous Gram-negative rods. In: Topley & Wilson’s Microbiology and Microbial Infections, 10 edition, Vol. 2,
Bacteriology, Edward Arnold Ltd. - Christensen H., Bisgaard M., Angen O. and Olsen J.E.: Final classification of Bisgaard taxon 9 as Actinobacillus arthritidis sp.
nov. and recognition of a novel genomospecies for equine strains of Actinobacillus lignieresii. Int. J. Syst. Evol. Microbiol.,
2002, 52, 1239-1246.
Nitrates reduction, oxidase, alkaline phosphatase, catalase, urease, D(+)xylose,
mannitol, D(-) sorbitol, D(-) fructose, D(+) galactose, D(+) glucose (acid), D(+)
mannose, lactose, ONPG, maltose, melibiose, sucrose (saccharose) & raffinose =
positive.
(isolates sorbitol negative are tentatively designated genomospecies 2, Christensen
et al., 2002)
Gelatinase, H2S, Voges-Proskauer, arginine dehydrolase, lysine decarboxylase,
ornithine decarboxylase, indole, xylitol, dulcitol, meso-inositol, L(+) rhamnose,
trehalose , L(-) sorbose, cellobiose, inulin, esculin, salicin, α-glucosidase (PNPG) &
gas from D(+) glucose = negative.
Glycerol, L(+) arabinose & dextrin = variable.
mannitol, D(-) sorbitol, D(-) fructose, D(+) galactose, D(+) glucose (acid), D(+)
mannose, lactose, ONPG, maltose, melibiose, sucrose (saccharose) & raffinose =
positive.
(isolates sorbitol negative are tentatively designated genomospecies 2, Christensen
et al., 2002)
Gelatinase, H2S, Voges-Proskauer, arginine dehydrolase, lysine decarboxylase,
ornithine decarboxylase, indole, xylitol, dulcitol, meso-inositol, L(+) rhamnose,
trehalose , L(-) sorbose, cellobiose, inulin, esculin, salicin, α-glucosidase (PNPG) &
gas from D(+) glucose = negative.
Glycerol, L(+) arabinose & dextrin = variable.
(c) Costin Stoica
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