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 CO2 stimulate growth. Growth occurs at 37

ºC, but not at 20 ºC or 45 ºC. Marked production of succinic acid in presence of CO2
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.
Nitrates reduction, oxidase, alkaline phosphatase, catalase, L(+) arabinose,
D(+)xylose,  mannitol, D(-) sorbitol, D(-) fructose, D(+) galactose, D(+) glucose, D(+)
mannose, cellobiose, lactose, ONPG, maltose, sucrose (saccharose), raffinose,
esculin & salicin are positive.

Gelatinase, H
2S, Voges-Proskauer, urease, lysine decarboxylase, ornithine
decarboxylase, ADH, indole, glycerol, xylitol, dulcitol, meso-inositol,  L(+) rhamnose, L(-)
sorbose, melibiose, trehalose, inulin, citrate utilization & gas from D(+) glucose are
negative.
(c) Costin Stoica
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