Veterinary bacteriology: information about important bacteria
|Species/Subspecies:||Streptococcus equi subsp. equi|
|Categories:||Causes hemolysis; notifiable diseases and bacteria|
|Etymology:||Genus name: twisted (like a chain) coccus (coccus means a grain or a berry and referrs to any spherical microorganism)|
Species epithet: of horse
Subspecies epithet: see Species epithet.
|Alternative Species Name(s):||Streptococcus equi|
|Type Strain:||ATCC 33398 = CCUG 23255 = NCTC 9682.|
||Small (about 1 mm in diameter) transluscent colonies after incubation for 24 h at 37°C on blood agar. Give (clear) beta-hemolysis on blood agar.|
|Micromorphology:||Nonmotile cocci (0.6-1.0 µm) in chains or pairs.|
|Gram +/Gram -:||G+|
|Other Enzymes:||Esculinase v, hippuricase -, coagulase -, urease -|
|Biochemical Tests:||Voges-Proskauer -|
|Fermentation of carbohydrates:||
Other carbohydrates: amygdalin ?, ribose -
||Purple agar with lactose can be used to differentiate S. equi subsp. equi, which is not fermenting lactose, from S. equi subsp. zooepidemicus, which is a lactose fermenter.|
|16S rRNA Seq.:|
||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. equi consists of three subspecies which are related to S. devriesei.|
|Legislation:||In Sweden strangles is notifiable to the Swedish Board of Agriculture.|
|Comment:||Belongs to Lancefield's group C streptcocci.|
|New names of bacterial phyla|
The taxonomic category phylum was previously not regulated by the International Code of Nomenclature of Prokaryotes (ICNP), but now this has changed and it was decided to revise the names of bacterial phyla. All phyla must be written in italics (which has been done on VetBact also before) and have the ending -ota.Published 2023-03-01. Read more...
|The taxonomy of chlamydias|
Species within the family Chlamydiaceae were previously divided into two genera Chlamydia and Chlamydophila. However, the differences between these two genera were not that great and many research groups have not accepted this division. Therefore, the genus Chlamydophila has been returned to the genus Chlamydia and this change has now been incorporated in VetBactPublished 2023-03-15. Read more...