Global molecular evolution and phylogeographic analysis of barley yellow dwarf virus based on the cp and mp genes

文献类型： 外文期刊

第一作者： Wei, Shiqing

作者： Wei, Shiqing;Chen, Guoliang;Yang, Hui;Gong, Guoshu;Luo, PeiGao;Zhang, Min;Huang, Liang

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关键词： Barley yellow dwarf virus; Phylogenetic analysis; Viral population history; Phylogeography; Bayesian tip-association significance

期刊名称：VIROLOGY JOURNAL （ 影响因子：4.8； 五年影响因子：3.9 ）

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年卷期： 2023 年 20 卷 1 期

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收录情况： SCI

摘要： Barley yellow dwarf virus (BYDV) has caused considerable losses in the global production of grain crops such as wheat, barley and maize. We investigated the phylodynamics of the virus by analysing 379 and 485 nucleotide sequences of the genes encoding the coat protein and movement protein, respectively. The maximum clade credibility tree indicated that BYDV-GAV and BYDV-MAV, BYDV-PAV and BYDV-PAS share the same evolutionary lineage, respectively. The diversification of BYDV arises from its adaptability to vector insects and geography. Bayesian phylogenetic analyses showed that the mean substitution rates of the coat and movement proteins of BYDV ranged from 8.327 x 10(- 4) (4.700 x 10(- 4)-1.228 x 10(- 3)) and 8.671 x 10(- 4) (6.143 x 10(- 4)-1.130 x 10(- 3)) substitutions/site/year, respectively. The time since the most recent common BYDV ancestor was 1434 (1040-1766) CE (Common Era). The Bayesian skyline plot (BSP) showed that the BYDV population experienced dramatic expansions approximately 8 years into the 21st century, followed by a dramatic decline in less than 15 years. Our phylogeographic analysis showed that the BYDV population originating in the United States was subsequently introduced to Europe, South America, Australia and Asia. The migration pathways of BYDV suggest that the global spread of BYDV is associated with human activities.

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