|Etymology:||Genus name: named after the Swiss bacteriologist Jacques Nicolet, who has studied the family Pasteurellaceae in his research. |
Species epithet: semolina (the colonies look like semolinas).
|Significance:||Is regularly isolated from Swedish horses with respiratory problems, but it does not necessarily prove that N. semolina is the causative agent
|Type Strain:||CCUG 43639.|
||Small white colonies (0.5-2 mm in diameter), which are similar to semolinas. The colonies can be moved on the agar surface with a plastic loop without losing the shape. Give no hemolysis at blood agar.|
|Micromorphology:||Short, non-motile and pleomorphic rods.|
|Gram +/Gram -:||G-|
|Other Enzymes:||Eskulinase (= beta-glucosidase) (-), ornithine decarboxylase -, tryptophanase (indole) -, urease +|
|Biochemical Tests:||Citrate -, hydrogen sulphide -.|
|Fermentation of carbohydrates:||
N. semolina is also negative for D-galactose and seem to be non-fermentative.
|16S rRNA Seq.:|
||There is only one species described within the genus Nicoletella. which is relatively close to Histophilus somni, which also is a single species within its genus.|
|Reference(s):||No. 1, 51|
|The revised taxonomy of the mollicutes (mycoplasmas)|
About 2 years ago, the taxonomy of mycoplasmas was revised at VetBact, because a research group had proposed that 5 new genera should be included together with the genus Mycoplasma. This also had consequences for higher taxa within the phylum, which was then called Tenericutes. Now another group of researchers has suggested that the new names should be rejected.Published 2023-10-03. Read more...