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首页> 外文期刊>Plant Pathology >Occurrence of a new recombinant begomovirus species infecting tomato in the Al-Batinah region of Oman
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Occurrence of a new recombinant begomovirus species infecting tomato in the Al-Batinah region of Oman

机译：在阿曼的Al-Batinah地区出现了一种新的重组begomovirus感染番茄的物种。

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摘要

Whitefly-transmitted begomoviruses are the most important limiting factor for tomato cultivation in Oman, particularly in the Al-Batinah region, the major agricultural area of the country. Commercial farms in the Al-Batinah region were surveyed during January-March 2013. Samples of tomato showing leaf curl disease symptoms typical of begomoviruses were collected and analysed. Full-length sequences of five clones were shown to have relatively low percentage identity values to known begomoviruses, with the highest (88-6%) to isolates of Tomato leaf curl Oman virus (ToLCOMV), a begomovirus previously reported in Oman, indicating that these represent a newly identified species, for which the name Tomato leaf curl Barka virus (ToLCBrV) is proposed. Four isolates of ToLCBrV were found associated with Tomato leaf curl betasatellite (ToLCB). The five isolates of ToLCBrV characterized in this study were shown to be recombinants, with ToLCOMV as the major parent, and a fragment of Croton yellow vein virus (CrYW) spanning the 3' half of the replication-associated protein. The significance of these findings is discussed.
机译：烟粉虱传播的begomovirus病毒是阿曼番茄种植的最重要限制因素，特别是在该国主要农业区Al-Batinah地区。在2013年1月至3月期间对Al-Batinah地区的商业农场进行了调查。收集并分析了表现出典型的begomoviruses的卷叶病症状的番茄样品。已显示五个克隆的全长序列与已知的begomovirus病毒具有相对较低的同一性百分比值，对番茄叶片卷曲阿曼病毒（ToLCOMV）的分离株具有最高的（88-6％）分离度，这是先前在阿曼报道的begomovirus病毒，这些代表了新近鉴定的物种，为此提出了名称番茄叶卷曲巴尔卡病毒（ToLCBrV）。发现四个ToLCBrV分离物与番茄卷叶β卫星（ToLCB）相关。在该研究中表征的五个ToLCBrV分离株是重组体，其中ToLCOMV为主要亲本，巴豆黄脉病毒（CrYW）的片段跨越了复制相关蛋白的3'一半。讨论了这些发现的意义。

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