Preprint Article Version 1 This version not peer reviewed

The Genetic Structure of Turnip mosaic Virus Population Reveals the Rapid Expansion of a New Emergent Lineage in China

Version 1 : Received: 13 May 2017 / Approved: 15 May 2017 / Online: 15 May 2017 (11:38:11 CEST)

How to cite: Li, X.; Zhu, T.; Yin, X.; Zhang, C.; Chen, J.; Tian, Y.; Liu, J. The Genetic Structure of Turnip mosaic Virus Population Reveals the Rapid Expansion of a New Emergent Lineage in China. Preprints 2017, 2017050109 (doi: 10.20944/preprints201705.0109.v1). Li, X.; Zhu, T.; Yin, X.; Zhang, C.; Chen, J.; Tian, Y.; Liu, J. The Genetic Structure of Turnip mosaic Virus Population Reveals the Rapid Expansion of a New Emergent Lineage in China. Preprints 2017, 2017050109 (doi: 10.20944/preprints201705.0109.v1).

Abstract

Turnip mosaic virus (TuMV) is one of the most widespread and economically important virus infecting both crop and ornamental species of the family Brassicaceae. TuMV isolates can be classified to five phylogenetic lineages, basal-B, basal-BR, Asian-BR, world-B and Orchis. To understand the genetic structure of TuMV from radish in China, the 3′-terminal genome of 90 TuMV isolates were determined and analyzed with other Chinese isolates available. The results showed that the Chinese TuMV isolates from radish formed three groups: Asian-BR, basal-BR and world-B. More than half of these isolates (52.54%) were clustered to basal-BR group, and could be further divided into three sub-groups. The TuMV basal-BR isolates in the sub-groups I and II were genetically homologous with Japanese ones, while those in sub-group III formed a distinct lineage. Sub-populations of TuMV basal-BR II and III were new emergent and in a state of expansion. The Chinese TuMV radish populations were under negative selection. Gene flow between TuMV populations from Tai’an, Weifang and Changchun was frequent.

Subject Areas

Turnip mosaic virus; Potyvirus; Genetic structure; Population; China

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