葡萄卷叶相关病毒 7 的基因组和生物学分析揭示了棒条病毒科中一个可能的新属。
Genomic and biological analysis of Grapevine leafroll-associated virus 7 reveals a possible new genus within the family Closteroviridae.
机构信息
Department of Plant Pathology, University of California, Davis, CA 95616, USA.
出版信息
Virus Res. 2012 Jan;163(1):302-9. doi: 10.1016/j.virusres.2011.10.018. Epub 2011 Oct 25.
Abstract
Deep sequencing analysis of an asymptomatic grapevine revealed a virome containing five RNA viruses and a viroid. Of these, Grapevine leafroll-associated virus 7 (GLRaV-7), an unassigned closterovirus, was by far the most prominently represented sequence in the analysis. Graft-inoculation of the infection to another grape variety confirmed the lack of the leafroll disease symptoms, even though GLRaV-7 could be detected in the inoculated indicator plants. A 16,496 nucleotide-long genomic sequence of this virus was determined from the deep sequencing data. Its genome architecture and the sequences encoding its nine predicted proteins were compared with those of other closteroviruses. The comparison revealed that two other viruses, Little cherry virus-1 and Cordyline virus-1 formed a well supported phylogenetic cluster with GLRaV-7.
摘要
对一株无症状葡萄的深度测序分析揭示了一个含有五种 RNA 病毒和一种拟病毒的病毒组。在这些病毒中，葡萄卷叶伴随病毒 7（GLRaV-7）是最主要的病毒，它是一种未被分类的杆状病毒。通过将感染物嫁接到另一个葡萄品种上，即使在接种的指示植物中可以检测到 GLRaV-7，也确认了没有卷叶病的症状。从深度测序数据中确定了该病毒的 16496 个核苷酸长的基因组序列。其基因组结构和预测的九个蛋白的编码序列与其他杆状病毒进行了比较。比较结果表明，另外两种病毒，樱桃病毒 1 和棕叶病毒 1 与 GLRaV-7 形成了一个支持度很高的进化枝。
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