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Swedish University of Agricultural Sciences

Veterinary bacteriology: information about important bacteria
Veterinary bacteriology


Species/Subspecies: Erysipelothrix tonsillarum
Category: Causes hemolysis
Etymology: Genus name: erysipelas thread.
Species epithet: of the tosils.
Significance:  [Of minor importance]   
Taxonomy:
Phylum
Firmicutes
Class
Erysipelotrichia
Order
Erysipelotrichales
Family
Erysipelothrichaceae 
Genus
Erysipelothrix
Type Strain: T-305 = ATCC 43339 = CCUG 31352.
Macromorphology (smell): Small (1 mm in diameter), transparent and nonpigmented colonies. Gives a norrow zone of α hemolysis on blood agar.
Micromorphology: Rods (0.3 x 1.0-1.5 µm), which appear singly, in pairs (V-shape) or in short chains.
Gram +/Gram -:G+
Metabolism: Facultatively anaerobic
Catalase/Oxidase:-/-
Fermentation of carbohydrates:
D-glucoselactosemaltoseL-rhamnosesucrose
+++-+
L-arabinosecellobioseD-mannitolsalicintrehalose
-?---
glycerolinulinraffinoseD-sorbitolstarch
-?--?
Galactose is also fermented.
Spec. Char.:
Disease:Endocarditis (inflamation in the heart valves).
Hosts: Dog
Clinical Picture:
16S rRNA Seq.:
Acc-noStrainNumber of NTOperon
AB055906 ATCC 43339T 1594  

Taxonomy/phylogeny:
 
Many serotypes of E. rhusiopathiae have been reclassified to the new species E. tonsillarum. However, these two species are very closely related (see the phylogenetic tree in Fig. 227:1).
Comment:Has been isolated from tonsils of apparently healthy pigs.
Updated:2016-01-14

News

New names of taxa within the classification category phylum

During October 2021, an article was published by A. Oren och G.M. Garrity, in which new names are proposed for a number of taxa within the classification category phylum. This has resulted in many discussions in social media about whether it was really necessary to make these changes, which have created confusion among microbiologists and other professionals who come into contact with bacteriology.

Published 2022-09-28. Read more...

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