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番茄卷叶帕拉姆布尔病毒和辣椒卷叶β卫星分子特征的研究——自然侵染印度南瓜(南瓜属)

Molecular Characterization of Tomato leaf curl Palampur virus and Pepper leaf curl betasatellite Naturally Infecting Pumpkin (Cucurbita moschata) in India.

作者信息

Namrata Jaiswal, Saritha R K, Datta D, Singh M, Dubey R S, Rai A B, Rai M

机构信息

Indian Institute of Vegetable Research, P/O Jakhini (Shahanshapur), Varanasi, 221305 UP India.

出版信息

Indian J Virol. 2010 Oct;21(2):128-32. doi: 10.1007/s13337-011-0022-7. Epub 2011 Mar 16.

Abstract

Pumpkin cultivation in India is affected by severe incidence of a yellow vein mosaic disease. Tomato leaf curl New Delhi virus and Squash leaf curl China virus are known to be associated with this disease in India. We were able to identify a third begomovirus-Tomato leaf curl Palampur virus (ToLCPMV), from pumpkin showing typical symptoms of the disease at Varanasi based on the sequence of complete DNA-A genome of the virus. The complete DNA-A sequence of the virus shared more than 99% sequence identity with other ToLCPMV isolates available in the GenBank and clustered with them in the phylogenetic analysis. This betasatellite amplified from the same infected sample has been identified as Pepper leaf curl betasatellite (PepLCB) which also infects chilli in India. There was 92% sequence identity between the two isolates. This is the first report of natural infection of ToLCPMV on pumpkin and association of PepLCB with yellow vein mosaic disease of pumpkin in India.

摘要

印度的南瓜种植受到严重的黄脉花叶病影响。已知番茄曲叶新德里病毒和西葫芦曲叶中国病毒与印度的这种病害有关。基于该病毒完整DNA-A基因组序列,我们在瓦拉纳西从表现出该病典型症状的南瓜中鉴定出了第三种双生病毒——番茄曲叶帕拉姆布尔病毒(ToLCPMV)。该病毒的完整DNA-A序列与GenBank中其他可用的ToLCPMV分离株具有超过99%的序列同一性,并在系统发育分析中与它们聚类。从同一感染样本中扩增出的这种卫星DNA已被鉴定为辣椒曲叶卫星DNA(PepLCB),它在印度也感染辣椒。两个分离株之间有92%的序列同一性。这是印度关于ToLCPMV自然感染南瓜以及PepLCB与南瓜黄脉花叶病关联的首次报道。

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