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Veterinary bacteriology: information about important bacteria
Veterinary bacteriology


Species/Subspecies: Streptococcus devriesei
Category: Causes hemolysis
Etymology: Genus name: twisted (like a chain) cocci (coccus means a grain or a berry and referrs to any spherical microorganism)
Species epithet: in honor of the Belgian microbiologist Luc A. Devriese, who has worked with the taxonomy of the streptoccoci
Significance:Caries in horses in Sweden has become somewhat more common in recent years
  [Of minor importance]   
Taxonomy:
Phylum
Firmicutes
Class
Bacilli
Order
Lactobacillales
Family
Streptococcaceae 
Genus
Streptococcus
Type Strain: CCUG 47155
Macromorphology (smell): Small hemolysing colonies (0.5-1 mm i diameter) after incubation for 24 h at 37°C on blood agar.
Micromorphology: Single non-motile cocci, which may also occur in pair or short chains.
Gram +/Gram -:G+
Catalase/Oxidase:-/
Other Enzymes: Hippuricase +, urease -
Biochemical Tests: Voges-Proskaur +
Fermentation of carbohydrates:
D-glucoselactosemaltoseL-rhamnosesucrose
+++-+
L-arabinosecellobioseD-mannitolsalicintrehalose
-++++
glycerolinulinraffinoseD-sorbitolstarch
-++v?
Other carbohydrates: Amygdalin +, mellibiose +, ribose -.
Spec. Char.:
Disease:Caries
Hosts: Horse
Clinical Picture:
16S rRNA Seq.:
Acc-noStrainNumber of NTOperon
AJ564067 CCUG 47156T? 1 439  

Taxonomy/phylogeny:
 
About 100 species have been described within the genus Streptococcus. Many species within the genus Enterococcus have earlier been classified as streptococci and, thus, they are closely related. S. devriesei is related to S. equi.
Comment:Caries in horses is considered by some scientists to be caused by (among other bacteria) S. devriesei
Reference(s): No. 129, 130
Updated:2018-05-31

News

The revised taxonomy of the mollicutes

The revised taxonomy of mollicutes (mycoplasmas) has now been introduced on VetBact, which means that many of the species have been given new genus names or moved to another higher taxon. 

Published 2021-11-25. Read more...

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