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Veterinary bacteriology: information about important bacteria
Veterinary bacteriology


Species/Subspecies: Actinobacillus lignieresii
Etymology: Genus name: small ray rod (ray refers to the histological picture of radially localized club-like structures around the bacterial core).
Species epithet: named after the bacteriologist J. Lignières, who first isolated this organism.
Significance:  [Important]   
Taxonomy:
Phylum
Proteobacteria
Class
Gammaproteobacteria
Order
Pasteurellales
Family
Pasteurellaceae 
Genus
Actinobacillus
Type Strain: ATCC 49236 = CCUG 41384 = NCTC 4189.
Macromorphology (smell):
   
Small viscous and grayish colonies (1-2 mm in diameter). No hemolysis on blood agar.
Micromorphology: Small nonmotile rod or coccoid rod (0.4 x 1.15-1.25 µm). Small granules can be observed at the poles of the bacteria. Long filamentous forms can be observed if the medium contains glucose or maltose.
Gram +/Gram -:
   
G-
Metabolism: Facultatively anaerobic
Catalase/Oxidase:(+)/+
Other Enzymes: Ornithine decarboxylase -, tryptophanase -, urease +
Biochemical Tests: Methyl red -, Voges-Proskauer V, hydrogensulfide +
Fermentation of carbohydrates:
D-glucoselactosemaltoseL-rhamnosesucrose
+++-+
L-arabinosecellobioseD-mannitolsalicintrehalose
v-+--
glycerolinulinraffinoseD-sorbitolstarch
v-?(-)-
Other carbohydrates: Adonitol -, dulcitol -, D-fructose +, D-galactose +, inositol -, D-mannose +, melibiose -.
Spec. Char.: Temperature optimum: 37°C. Does not require V-factor (NAD or NADPH) for growth. Cf. other Actinobacillus spp.
Disease:Actinobacillosis or wooden tongue
Hosts: Cattle, sheep
Clinical Picture: Chronic granulomas primarely in the tongue (cattle) and adjacent lymph nodes
Genome Sequence:
Acc-noStrainSize (bp)Genome
Not reported    

16S rRNA Seq.:
Acc-noStrainNumber of NTOperon
M75068 (T) 1487  

Taxonomy/phylogeny:
 
About 18 species have been described within genus Actinobacillus, but the relationship between members within the closely related genera Actinobacillus, Haemophilus, Mannheimia and Pasteurella is very uncertain since none of these genera forms monophyletic clusters.
Comment:Type species for the genus
Reference(s): No. 96
Updated:2021-02-28

News

"Dear child has many names" (call it what you will...)

For a long time, Rhodococcus hoagii was refer­red to Rhodo­coccus equi on VetBact, because we experienced some resistance to the name that is now considered to be the correct one, i.e. Rhodococcus hoagii. Now you can find the bacterium in question under the correct name in VetBact, but you can also find the bacterium when searching for the old name. 

Published 2021-10-10. Read more...

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