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Phylogeny of Brucella abortus strains isolated in the Russian Federation

Asian Pacific Journal of Tropical Medicine 2021年第7期14卷 323-329页

作者： Dmitry A.Kovalev Dmitriy G.Ponomarenko Sergey V.Pisarenko nikolay a.shapakov Anna A.Khachaturova Natalia S.Serdyuk Olga V.Bobrysheva Alexander N.Kulichenko Stavropol Research Anti-Plague Institute 355035StavropolRussian Federation

Objective: To study Brucella(B.) abortus strains isolated in the Russian Federation, in order to identify their detailed position in the phylogenetic structure of the species global population as well as to determine genetic relationships for isolates from different geographical ***: Based on Bayesian method, the whole genome singlenucleotide polymorphism(SNP) analysis of 258 B. abortus strains from different geographical areas of the world including 20 B. abortus strains isolated in Russia was carried out. Results: The core genome SNP analysis of the B. abortus isolates allowed describing the main genetic lineages. The Russian strains entered two separate clades, including the basal branch and the C1 branch that is widely spread in Eurasia. The data on the isolation time was used for the dating of phylogenetic tree, and also the estimated time frame for the B. abortus genotype diversification was determined. There were sets of specific SNPs identified, which defined each of the genotypes and ***: A significant genetic diversity of the brucellosis pathogen strains from Russia has been proven. The sets of unique specific SNPs described in our study may become one of the elements within a bio-informational analysis algorithm to be used for epidemiological study of brucellosis outbreaks, including those caused by new(atypical) genetic variants of B. abortus.

关键词： Brucella abortus Phylogeny Evolution Genome SNP

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