Veterinary bacteriology: information about important bacteria
|Etymology:||Genus name: ray rod. |
Species epithet: named after R.F. Ross, who together with colleagues isolated this organism.
|Significance:||Only a few cases reported in Sweden
[Of minor importance]
|Type Strain:||A55 & A68 = Ross 192 = P624 = ATCC 27072 = CCUG 12395 = CCUG 24851 = NCTC 10801.|
|Macromorphology (smell):||Small greyish translucent colonies (diameter 1-2 mm)|
|Micromorphology:||Small non motile rod (<2 µm), usually without hemolysis on blood agar. Weak hemolysis can sometimes be observed on blood agar.|
|Gram +/Gram -:||G-|
|Other Enzymes:||Esculinase -, ornithine decarboxylase -, tryptophanase -, urease +|
|Fermentation of carbohydrates:||
Other carbohydrates: Dulcitol -, D-galactose +, inositol +, mannose V, melibiose -.
|Spec. Char.:||Does not require V-factor (NAD or NADPH) for growth. Cf. other Actinobacillus spp.|
|Disease:||Abortion and metritis in pigs.
|16S rRNA Seq.:|
||About 18 species have been described within genus Actinobacillus, but the relationship between members within the closely related genera Actinobacillus, Haemophilus, Mannheimia and Pasteurella is very uncertain since none of these genera forms monophyletic clusters.|
|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...
|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...