Listeria valentina sp. nov., isolated from a water trough and the faeces of healthy sheep - Archive ouverte HAL Access content directly
Journal Articles International Journal of Systematic and Evolutionary Microbiology Year : 2020

Listeria valentina sp. nov., isolated from a water trough and the faeces of healthy sheep

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Juan J Quereda
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Abstract

In the context of a study on the occurrence of Listeria species in an animal farm environment in Valencia, Spain, six Listeria-like isolates could not be assigned to any known species. Phylogenetic analysis based on the 16S rRNA gene and on 231 Listeria core genes grouped these isolates in a monophyletic clade within the genus Listeria, with highest similarity to Listeria thailandensis. Whole-genome sequence analyses based on in silico DNA-DNA hybridization, the average nucleotide blast and the pairwise amino acid identities against all currently known Listeria species confirmed that these isolates constituted a new taxon within the genus Listeria. Phenotypically, these isolates differed from other Listeria species mainly by the production of acid from inositol, the absence of acidification in presence of methyl α-d-glucoside, and the absence of α-mannosidase and nitrate reductase activities. The name Listeria valentina sp. nov. is proposed for this novel species, and the type strain is CLIP 2019/00642T (=CIP 111799T=DSM 110544T).
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Dates and versions

pasteur-02982350 , version 1 (28-10-2020)

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Attribution - CC BY 4.0

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Juan J Quereda, Alexandre Leclercq, Alexandra Moura, Guillaume Vales, Ángel Gómez-Martín, et al.. Listeria valentina sp. nov., isolated from a water trough and the faeces of healthy sheep. International Journal of Systematic and Evolutionary Microbiology, 2020, ⟨10.1099/ijsem.0.004494⟩. ⟨pasteur-02982350⟩

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