Veterinary bacteriology: information about important bacteria
|Etymology:||Genus name: Cocci (grains or berries) of the intestine. |
Species epithet: related to feces.
|Alternative Species Name(s):||Streptococcus faecalis|
|Type Strain:||ATCC 19433 and 19433-U = CCUG 19916 = NCTC 775|
|Micromorphology:||Non-motile cocci. However, some strains are motile.|
|Gram +/Gram -:||G+|
|Other Enzymes:||Esculinase +, α-galactosidase -, β-galactosidase -, hippuricase (+).|
|Biochemical Tests:||Citrate -|
|Fermentation of carbohydrates:||
Other carbohydrates: D-Fruktos +, galaktos +, melibiose -, ribos +, xylitol -.
|Spec. Char.:||E. faecalis can grow in the presence of bile salts.|
||E. faecalis can be cultivated on purple agar and ferments lactose under acid production (see Fig. 124:3). Slanetz and Bartley medium is used for enumeration of bacteria within the genus Enterococcus (see Fig. 124:4).|
|Hosts:||Different animal species|
|16S rRNA Seq.:|
||About 50 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.E. faecalis and E. faecium as well as E. avium are rather closely related.|
|Comment:||E. faecalis is type species of the genus. Colonize the intestine and can transfer antibiotic resistance to more pathogenic species. Some strains are used as probioticum.|
|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...
|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...