|Etymology:||Genus name: named after the British surgeon Lord Lister. |
Species epithet: harmless.
|Significance:||Can be found as a contaminant of food, but can easily be differentiated from L. monocytogenes by cultivation on OCLA-agar. See L. monocytogenes.
[Of minor importance]
|Type Strain:||ATCC 33090 = CCUG 15531 = NCTC 11288.|
|Macromorphology (smell):||No hemolysis on blood agar.|
|Micromorphology:||Motile rod (0.4-0.5 x 1-2 µm). Has a few peritrichous flagella.|
|Gram +/Gram -:||G+|
|Other Enzymes:||Esculinase +, lecithinase -, hippuricase +, tryptophanase - and urease -.|
|Biochemical Tests:||Methyl red +, Voges-Proskauer +.|
|Fermentation of carbohydrates:||
|Reservoir:||The environment (soil, water etc.).|
|16S rRNA Seq.:|
||There are 21 species and subspecies described within the genus and all are very similar. L. innocua and L. monocytogenes have almost identical 16S rRNA sequences.|
|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...