Diversity and Pathogenic Potential of Listeria monocytogenes Isolated from Environmental Sources in the Russian Federation
Journal Title: International Journal of Modern Engineering Research (IJMER) - Year 2015, Vol 5, Issue 3
Abstract
The foodborne pathogen Listeria monocytogenes is also widely spread in nature. We report a survey of L.monocytogenes in Natural Parks of the densely populated Central Federal Region of Russia. Our study revealed the prevalence of phylogenetic lineage II, serovar 1/2a isolates, further classified into 11 sequence types (STs), three of which (756, 757, 758) we first described. Only one isolate from the dappled deer's faeces belonged to the phylogenetic lineage I, serovar 1/2b (ST5). All novel STs were single locus variants of known STs. Five STs belonged to the previously established epidemic clones VII, V, VI and III. Multi-virulent-locus-sequence-typing (MvLST) based on the internalins-genes-profile (IP) revealed six new IPs. Comparison of the concatenated MLST (multilocus-sequence-typing) and IP sequences of the strains from two distinct areas of Russia, the European and the Far Eastern part, demonstrated considerable differences between them. In spite of the prevalence of global STs in both areas, phylogenetic lineage I strains predominated in the Far East region, while lineage II strains were mainly isolated in the European part. Our findings highlight the importance of epidemiological monitoring of the natural foci of L.monocytogenes infection and demonstrated usefulness of the combination of MLST and IP methods for this purpose.
Authors and Affiliations
Voronina Olga L , Ryzhova Natalia N , Kunda Marina S , Kurnaeva Margarita A , Semenov Andrey N , Aksenova Ekaterina I , Egorova Irina Yu , Ermolaeva Svetlana A , Gintsburg Alexander L
Keywords
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