Genetic Diversity Analysis of Brassica Yellows Virus Causing Aberrant Color Symptoms in Oilseed Rape
文献类型: 外文期刊
第一作者: Peng, Qi
作者: Peng, Qi;Zhou, Xiaoying;Sun, Chengming;Hu, Maolong;Fu, Sanxiong;Zhang, Jiefu;Peng, Qi;Li, Wei;Hou, Yan;Lei, Lei;Kundu, Jiban Kumar;Kundu, Jiban Kumar
作者机构:
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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