Actinobacillus minor
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Proteobacteria, Class Gammaproteobacteria, Order Pasteurellales, Family Pasteurellaceae, Genus Actinobacillus,
Actinobacillus minor  
Moller, Fussing, Grimont, Paster, Dewhirst and Kilian, 1996.
Synonym: "Haemophilus sp. minor group".
Gram-negative, small rods, 1.6-2.4 µm, nonmotile, nonsporulated.
Colonies are graysh and smooth on chocolate agar; 0.8 mm in diameter after 48
hours of incubation. Hemolysis is negative. V-factor dependent growth.
Isolated from the upper respiratory tracts of pigs , where they constitute part of the residing mucosal flora.
Is not pathogenic to pigs and have a low potential for colonization of the upper respiratory tract of gnotobiotic piglets.
  1. Olsen I., Moller 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. Moller K., Fussing V., Grimont P.A.D., Paster B.J., Dewhirst F.E. & Kilian M.: Actinobacillus minor sp. nov., Actinobacillus porcinus
    sp. nov., and Actinobacillus indolicus sp. nov., three new V factor-dependent species from the respiratory tract of pigs. Int. J. Syst.
    Bacteriol., 1996, 46, 951-956.
Positive results for nitrates reduction, alkaline phosphatase, H2S production, urease,
ONPG, acid production from: D(+) glucose (without gas), D(+) mannose, lactose,
maltose, sucrose & raffinose.

Negative results for arginine dehydrolase, lysine decarboxylase, ornithine decarboxylase, indole production, acid production from:
L(+) arabinose, meso-inositol, mannitol, D(-) sorbitol, inulin, esculin & salicin.

Variable results for oxidase, catalase, acid production from: D(+) xylose, D(+) galactose, melibiose & trehalose.
(c) Costin Stoica
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