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Veterinary bacteriology: information about important bacteria
Veterinary bacteriology


Species/Subspecies: Erysipelothrix rhusiopathiae
Categories: Zoonotic; causes hemolysis
Etymology: Genus name: erysipelas thread.
Species epithet: of red disease.
Significance:  [Very important]   
Taxonomy:
Phylum
Firmicutes
Class
Erysipelotrichia
Order
Erysipelotrichales
Family
Erysipelothrichaceae 
Genus
Erysipelothrix
Type Strain: ATCC 19414 = CCUG 221 = NCTC 8163.
Macromorphology (smell):
Erysipelothrix rhusiopathiae  Erysipelothrix rhusiopathiae  
Small transparent nonpigmented colonies (0.2-1 mm in diameter) with a narrow zone of α-hemolysis on blood agar.
Micromorphology: Nonmotile and short rods (0.5 x 1.5-3.0 µm) with rounded ends, which may also grow as long filaments (about 60 µm in length).
Gram +/Gram -:
Erysipelothrix rhusiopathiae  
G+
Metabolism: Facultatively anaeroic
Catalase/Oxidase:-/-
Other Enzymes: Hippuricase +, tryptophanase -, urease -.
Biochemical Tests: Citrate -, Voges-Proskauer -.
Fermentation of carbohydrates:
D-glucoselactosemaltoseL-rhamnosesucrose
+++-(+)
L-arabinosecellobioseD-mannitolsalicintrehalose
-----
glycerolinulinraffinoseD-sorbitolstarch
--+--
Other carbohydrates: ribose -, xylose -.
Spec. Char.:
Disease:Swine erysipelas (diamond skin disease), erysipeloid (humans). Note that erysipelas in humans is caused by Streptococcus spp.
Hosts: Pig, poultry, sheep, horse, cattle, fish, seafood, humans etc.
Clinical Picture: Pigs Acute and subacute form: septicaemia, fever, arthritis,. Chronic form: arthritis, endocarditis
Poultry: increased herd mortality, decreased egg production and arthritis.
Humans: Red rhomboidal patches on the skin.
Diagnostics:Culture after enrichment. Confirmation by MALDI-TOF or biochemical tests.
Genome Sequence:
Acc-noStrainSize (bp)Genome
AP012027 Fujisawa 1 787 941 1c + 0 

16S rRNA Seq.:
Acc-noStrainNumber of NTOperonSequence similarity
AB034200 ATCC 19414T 1 497 100% 

Taxonomy/phylogeny:
Erysipelothrix rhusiopathiae  
Five species have been described within the genus Erysipelothrix. E. rhusiopathiae can be confused with Erysipelothrix tonsillarum and their 16S rRNA sequences are almost identical (see the phylogenetic tree in Fig. 43:4).
Comment:Type species for the genus. Is zoonotic.
Reference(s): No. 19, 114, 117
Updated:2020-10-28

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