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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]   
Old Species Name(s):Chlamydia psittaci
Taxonomy:
Phylum
Chlamydiae
Class
Chlamydiia
Order
Chlamydiales
Family
Chlamydiaceae 
Genus
Chlamydophila
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.
Catalase/Oxidase:
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 

Taxonomy/phylogeny:
 
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
Updated:2020-03-05

News

"Dear child has many names" (call it what you will...)

For a long time, Rhodococcus hoagii was refer­red to Rhodo­coccus equi on VetBact, because we experienced some resistance to the name that is now considered to be the correct one, i.e. Rhodococcus hoagii. Now you can find the bacterium in question under the correct name in VetBact, but you can also find the bacterium when searching for the old name. 

Published 2021-10-10. Read more...

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