Actinobacillus succinogenes
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Proteobacteria, Class Gammaproteobacteria, Order Pasteurellales, Family Pasteurellaceae, Genus Actinobacillus,
Actinobacillus succinogenes
Guettler, Rumler and Jain 1999.
Gram-negative pleomorphic rods; 0.8 x 1 µm, nonmotile. Filamentous cells are occasionally seen: “morse code” forms and chains
are common in growing broth culture. Cells within an extracellular matrix are common in aerobically grown cultures.
Colonies are circular, gray, translucent on TSB agar, 1-1.5mm diameter after 24
hours at 37 ºC with CO
2. Non-hemolytic. V-factor independent growth.
Chemoorganotrophic. Yeast extract and CO
2 stimulate growth. Growth occurs at 37
ºC, but not at 20 or 45 ºC. Marked production of succinic acid in presence of CO
2 and
high substrate concentration.
Isolated from the bovine rumen.
Bacteria is adapted to a symbiotic living in the bovine rumen.
  1. 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.
  2. 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.
  3. Guettler M.V., Rumler D. & Jain M.K.: Actinobacillus succinogenes sp. nov., a novel succinic-acid-producing bacterium from the
    bovine rumen. Int. J. Syst. Bacteriol., 1999, 49, 207-216.
Positive results for nitrates reduction, oxidase, ONPG, alkaline phosphatase, catalase,
acid production from: L(+) arabinose, D(+) xylose,  mannitol, D(-) sorbitol, D(-) fructose,
D(+) galactose, D(+) glucose (without gas), D(+) mannose, cellobiose, lactose,
maltose, sucrose, raffinose, esculin & salicin.

Negative results for
citrate utilization, gelatinase, H2S production, Voges-Proskauer,
urease, lysine decarboxylase, ornithine decarboxylase, ADH, indole production, acid
production from: glycerol, xylitol, dulcitol, meso-inositol, L(+) rhamnose, L(-) sorbose,
melibiose, trehalose, inulin.
(c) Costin Stoica
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