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Genetic Diversity Analysis of Brassica Yellows Virus Causing Aberrant Color Symptoms in Oilseed Rape

文献类型： 外文期刊

作者： Peng, Qi 1 ; Li, Wei 3 ; Zhou, Xiaoying 1 ; Sun, Chengming 1 ; Hou, Yan 4 ; Hu, Maolong 1 ; Fu, Sanxiong 1 ; Zhang, Jiefu 1 ; Kundu, Jiban Kumar 5 ; Lei, Lei 4 ;

作者机构： 1.Jiangsu Acad Agr Sci, Inst Ind Crops, Key Lab Cotton & Rapeseed, Minist Agr, Nanjing 210014, Peoples R China

2.Jiangsu Univ, Inst Life Sci, Zhenjiang 212013, Peoples R China

3.China Agr Univ, Coll Agron & Biotechnol, Beijing 100193, Peoples R China

4.Guizhou Acad Agr Sci, Guizhou Rapeseed Inst, Guiyang 550008, Peoples R China

5.Crop Res Inst, Plant Virus & Vector Interact Ctr Plant Virus Res, Drnovska 507-73, Prague 16106, Czech Republic

6.Czech Acad Sci, Inst Expt Bot, Ctr Plant Virus Res, Lab Virol, Rozvojova 263, Prague 16502, Czech Republic

关键词： BrYV; TuYV; oilseed rape; phylogenetic tree; incidence; leaf color

期刊名称：PLANTS-BASEL （ 影响因子：4.5； 五年影响因子：4.8 ）

ISSN：

年卷期： 2023 年 12 卷 5 期

页码：

收录情况： SCI

摘要： The emergence of brassica yellow virus (BrYV) has increasingly damaged crucifer crops in China in recent years. In 2020, a large number of oilseed rape in Jiangsu showed aberrant leaf color. A combined RNA-seq and RT-PCR analysis identified BrYV as the major viral pathogen. A subsequent field survey showed that the average incidence of BrYV was 32.04%. In addition to BrYV, turnip mosaic virus (TuMV) was also frequently detected. As a result, two near full-length BrYV isolates, BrYV-814NJLH and BrYV-NJ13, were cloned. Based on the newly obtained sequences and the reported BrYV and turnip yellow virus (TuYV) isolates, a phylogenetic analysis was performed, and it was found that all BrYV isolates share a common root with TuYV. Pairwise amino acid identity analysis revealed that both P2 and P3 were conserved in BrYV. Additionally, recombination analysis revealed seven recombinant events in BrYV as TuYV. We also attempted to determine BrYV infection by quantitative leaf color index, but no significant correlation was found between the two. Systemic observations indicated that BrYV-infected plants had different symptoms, such as no symptom, purple stem base and red old leaves. Overall, our work proves that BrYV is closely related to TuYV and could be considered as an epidemic strain for oilseed rape in Jiangsu.

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