Veterinary bacteriology: information about important bacteria
|Etymology:||Genus name: named after the German bacteriologist Edwin Klebs (1834-1913).|
Species epithet: acid-producing.
|Significance:||Has a certain importance in food hygiene
[Of minor importance]
|Type Strain:||ATCC 13182= CCUG 15717|
||Form medium sized, dome shaped, white and glistening colonies (2-3 mm i diameter). Ger ej hemolys på blodagar.|
|Micromorphology:||Nonmotile rods (0.3-1.0 x 0.6-6.0 µm), which appear singly, in pairs or in short chains.|
|Gram +/Gram -:||G-|
|Other Enzymes:||DNase -, esculinase +, tryptophanase + (= indole +), urease +.|
|Biochemical Tests:||Citrate +, hydrogene sulfide -, methyl red (-), ornithine decarboxylase -, Voges-Proskauer +|
|Fermentation of carbohydrates:||
Form gas under fermentation of glucose. Other carbohydrates: erythritol -.
|Disease:||Diarrhea, bacteremia and mastitis in cattle.
|Hosts:||Is an opportunist, which may be found in the intestinal tract of animals and humans.|
|Virulence Factors:||A low molecular weight cytotoxin, which is called tilivalline.|
|16S rRNA Seq.:|
||Within genus Klebsiella 13 species have been described. K. oxytoca belongs to the family Enterobacteriaceae and is closely related to members of the genus Citrobacter. In fact, members of the genus Klebsiella and Citrobacter freundii form a monophyletic cluster (see Fig. 156:6 to the left).|
|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...