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Veterinary bacteriology: information about important bacteria
Veterinary bacteriology

Species/Subspecies: Chlamydophila abortus
Category: Notifiable diseases and bacteria
Etymology: Genus name: cloac loving.
Species epithet: of abortion.
Significance:  [Important]   
Alternative Species Name(s):Chlamydia psittaci
Type Strain: B577 = ATCC VR-656.
Macromorphology (smell): Does only grow intracellularly and can, therfore, not be cultivated on artificial substrates.
Micromorphology: Outside the host cell: infectious elementary bodies (0.2-0.3 µm).
Within the host cell: non-infectious reticulate bodies (0.8-1.0 µm). Non-motile.
Gram +/Gram -:G-, difficult to gram stain.
Metabolism: Aerobic, but members of the family Chlamydiaceae have only limited resources to to synthesize their own ATP. Therefore, they can ingest ATP from the host cell.
Spec. Char.:
Disease:Enzootic abortion of ewes, ovine chlamydiosis.
Hosts: Cattle, sheep, goat, pig
Clinical Picture: Abortion
Genome Sequence:
Acc-noStrainSize (bp)Genome
NC_004552 S26/3 1 144 377  

16S rRNA Seq.:
Acc-noStrainNumber of NTOperon
D85709 ATCC VR-656T 1 548 

Five species have been described within genus Chlamydia and six species have been described within genus Chlamydophila. Species within the family Chlamydiaceae form two relatively distinct clusters and have, therefore, been divided into two genera Chlamydia and Chlamydophila. However, some research groups have not accepted this, but include all species within genus Chlamydia.
Legislation: The disease in cattle and sheep is notifiable (to the Swedish Board of Agriculture) in Sweden.
Comment:Strictly intracellular. The cell envelope contains cystein rich proteins and only a small amount of peptidoglycans.
Reference(s): No. 68, 140
Links: The comprehensive reference and education wiki on Chlamydia and the Chlamydiales, Klamydia-föreläsning


New names of taxa within the classification category phylum

During October 2021, an article was published by A. Oren och G.M. Garrity, in which new names are proposed for a number of taxa within the classification category phylum. This has resulted in many discussions in social media about whether it was really necessary to make these changes, which have created confusion among microbiologists and other professionals who come into contact with bacteriology.

Published 2022-09-28. Read more...

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