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Veterinary bacteriology: information about important bacteria
Veterinary bacteriology

Species/Subspecies: Ureaplasma diversum
Category: In the normal flora
Etymology: Genus name: urea form.
Species epithet: diverse, which refers to the differens with respect to polypeptide content and G+C content inU. urealyticum.
Significance:  [Important]   
Type Strain: A417 = ATCC 43321 = NCTC 10182.
Macromorphology (smell): Forms very small colonies (0,100-0,175 mm in diameter), which have to be observed with a microscope.
Micromorphology: Non-motile coccoid cells (about 0.5 µm in diameter).
Gram +/Gram -:
Metabolism: Energy is generated by hydrolysis of urea to CO2 and NH3.
Other Enzymes: Urease +
Fermentation of carbohydrates: Glocose -
Spec. Char.: Lacks a cell wall. A pH of 6.0-6.5 is required for growth.
HostsDiseaseClinical picture
CattleUreaplasma infectionU. diversum has been associated with bovine vulvitis, endometritis, salpingitis, spontaneous abortion and infertility. Is also assumed to cause stillbirth and birth of weak calves.
16S rRNA Seq.:
Acc-noStrainNumber of NTOperon
D78650 A417T 1478  

About 10 species have been described within the genus Ureaplasma. See the phylogenetic tree (Fig. 209:1), but note that M can mean Mycoplasma, Mesomycoplasma, Metamycoplasma, Mycoplasmoides or Mycoplasmopsis in the tree.
Comment:Belongs to the normal flora, but may cause opportunistic infections.

Based on whole genome sequencing, the taxonomy of mycoplasmas has recently undergone a comprehensive revision. The new taxonomy is about to be introduced in VetBact, but it will still be possible to search for the alternative species names. Read more about the revised taxonomy of the mollicutes under the Term list of VetBact and see also reference 164 below.

Reference(s): No. 164


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 VetBact

Published 2023-03-15. Read more...

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