数字农科院2.0

Coinfection of cotton plants with watermelon mosaic virus and a novel polerovirus in china

文献类型： 外文期刊

作者： Xiuling Yang;Min Du;Shupeng Li;Xueping Zhou

作者机构：

关键词： Cotton leaf roll virus;Mixed infection;Polerovirus;Potyvirus;Watermelon mosaic virus

期刊名称： Viruses

ISSN： 1999-4915

年卷期： 2021 年 13.0 卷 11.0 期

页码：

收录情况： JCR（2021版）

摘要： Cotton is the most important fiber crop worldwide. To determine the presence of viruses in cotton plants showing leaf roll and vein yellowing symptoms in Henan Province of China, a small RNA-based deep sequencing approach was performed. Analysis of the de novo-assembled contigs followed by reverse transcription PCR allowed the reconstruction of watermelon mosaic virus and an unknown virus. The genome of the unknown virus was determined to be 5870 nucleotides in length, and has a genomic organization with characteristic features of previously reported poleroviruses. Sequence analysis revealed that the virus was closely related to, but significantly different from, cotton leafroll dwarf virus, a polerovirus of the family Solemoviridae. This virus had less than 90% amino acid sequence identity in the products of both ORF0 and ORF1. According to the polerovirus species demarcation criteria set by the International Committee on Taxonomy of Viruses, this virus should be assigned to a new polerovirus species, for which we propose the name “cotton leaf roll virus”.

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