Veterinary bacteriology: information about important bacteria
|Categories:||Causes hemolysis; spore forming; motile|
|Etymology:||Genus name: small rod|
Species epithet: wax colored
|Type Strain:||ATCC 14579 = CCUG 7414 = NCTC 2599|
||Large, opaque, grey-yellow, granular, flat colonies (diameter 5-10 mm). Most strains produce a clear broad zone of hemolysis on blood agar.|
||Large (1 x 5-10 µm) motile rods, centrally located endospores can sometimes be seen as uncolored regions after Gram staining of cells from older cultures. May form spores.|
|Gram +/Gram -:||G+ (Cells from older cultures can appear as G - because the cell wall degenerates)|
|Other Enzymes:||Lecithinase +|
|Fermentation of carbohydrates:||
Other carbohydrates: Fructose +, D-mannose -, ribose +, xylitol -.
||MYP agar is often used for confirmation of suspected B. cereus colonies from food samples.|
|16S rRNA Seq.:|
||About 250 species have been described within the genus Bacillus. B. cereus is very closely related to Bacillus anthracis and Bacillus thuringiensis.|
|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...