| Species/Subspecies: | Listeria innocua | ||||||||||
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| Category: | Motile | ||||||||||
| 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] |
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| Taxonomy: | Class Bacilli Order Bacillales Family Listeriaceae Genus Listeria |
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| 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+ | ||||||||||
| Metabolism: | Facultatively anaerobic. | ||||||||||
| Catalase/Oxidase: | +/- | ||||||||||
| Other Enzymes: | Esculinase +, lecithinase -, hippuricase +, tryptophanase - and urease -. | ||||||||||
| Biochemical Tests: | Methyl red +, Voges-Proskauer +. | ||||||||||
| Fermentation of carbohydrates: | D-glucose + lactose + maltose ? L-rhamnose v sucrose + L-arabinose - cellobiose ? D-mannitol - salicin ? trehalose + glycerol + inulin ? raffinose ? D-sorbitol - starch - |
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| Spec. Char.: | |||||||||||
| Reservoir: | The environment (soil, water etc.). | ||||||||||
| Genome Sequence: |
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| 16S rRNA Seq.: |
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| Taxonomy/phylogeny:
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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. | ||||||||||
| Updated: | 2023-03-08 |
