Veterinary bacteriology: information about important bacteria
|Etymology:||Genus name: suggests lack of a requirement for cholesterol.|
Species epithet: named after the Brittish virologist Patrick Laidlaw (1881-1940), who first isolated this organism.
|Significance:||Of no direct importance for veterinary medicine
[Of minor importance]
|Type Strain:||PG-8 = ATCC 23206 = NCTC 10116|
||Small colonies (0.2-2 mm), with a shape resembling a fried egg|
|Micromorphology:||Small, pleomorphic and nonmotile organisms (0.2-0.5 µm in diameter).|
|Gram +/Gram -:||G-, but is normally not gram stained since the cells are fragile and fragmented by this staining method.|
|Other Enzymes:||Arginine -, urease -|
|Fermentation of carbohydrates:||Glucose +|
|Spec. Char.:||Lacks a cell wall. Temperature optimum: 37°C, but grows at 20-41°C|
|Hosts:||Has been isolated from manure, soil, plants, insects and many different mammalian species|
|16S rRNA Seq.:|
||About 20 species have been described within the genus Acholeplasma, but all species names have not yet been aproved. This genus is closely related to a group of plant pathogens, which used to be called phytoplasmas. It has not been possible to cultivate these bacteria and this genus should, therefore, be called: "Candidatus Phytoplasma".|
|Comment:||Based on whole genome sequencing, the taxonomy of mycoplasmas has recently undergone a comprehensive revision. The new taxonomy has now been introduced in VetBact. For some mollicutes (mycoplasmas) the names have not changed and this applies to members of the genus Acholeplasma.
Sometimes found as a contaminant of cell cultures.
|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...