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首页> 外文期刊>Phytopathologia Mediterranea >Characterization of potato and tobacco isolates of Cucumber mosaic virus from Syria and the first report on CMV satellite RNA from potato
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Characterization of potato and tobacco isolates of Cucumber mosaic virus from Syria and the first report on CMV satellite RNA from potato

机译：叙利亚黄瓜花叶病毒马铃薯和烟草分离株的鉴定以及马铃薯CMV卫星RNA的首次报道

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摘要

Cucumber mosaic virus (CMV) has been reported from potato production areas in Europe, USA, Japan and more frequently in regions with warm climates such as Egypt, India, Saudi Arabia and Syria. As it is considered as an uncommon virus in potato, the characterization of potato isolates of CMV is far behind those from other hosts. In addition to potato, CMV is a common virus infecting many crops in Syria, but nothing is known about its molecular characteristics. The present study aimed to characterize Syrian CMV isolates collected from potato and neighboring tobacco fields. All potato isolates of CMV (total of four) co-infected potato plants with Potato virus Y (PVY) which is the most frequent potato virus in Syria. According to the sequence analyses of the coat protein (CP) coding region, three potato and three tobacco CMV isolates were found to be closely related regardless of the host species or geographic origin, and all belonged to the IA strain subgroup of CMV. A potato CMV isolate, PoCMV7-5, readily infected solanaceous plants in which it induced systemic infection, but was less infectious to other hosts including those of Leguminosae and Cucurbitaceae. When inoculated on potato plants, PoCMV7-5 alone or with various PVY strains was able to cause local but not systemic infection in all potato cultivars inoculated. PoCMV7-5 contained heterogeneous variants of satellite RNA which varied in length due to A or/and T deletion/insertion at approximate nucleotide position 225.240. This is the first report on CMV satellite RNA from potato.
机译：在欧洲，美国，日本的马铃薯生产地区已经报告了黄瓜花叶病毒（CMV），在埃及，印度，沙特阿拉伯和叙利亚等气候温暖的地区，黄瓜花叶病毒的报道更为频繁。由于它被认为是马铃薯中不常见的病毒，因此CMV马铃薯分离株的表征远远落后于其他宿主。除马铃薯外，CMV是一种常见的病毒，可感染叙利亚的许多农作物，但对其分子特性一无所知。本研究旨在表征从马铃薯和邻近烟草田收集的叙利亚CMV分离株。所有CMV马铃薯分离株（总共4种）都与马铃薯病毒Y（PVY）共同感染了马铃薯植株，马铃薯病毒Y（PVY）是叙利亚最常见的马铃薯病毒。根据外壳蛋白（CP）编码区的序列分析，发现三个马铃薯和三个烟草CMV分离株密切相关，而与宿主物种或地理起源无关，并且都属于CMV的IA菌株亚组。马铃薯CMV分离株PoCMV7-5容易感染茄科植物，在其中诱发全身性感染，但对其他宿主（包括豆科和葫芦科）的感染力较小。当在马铃薯植物上接种时，单独的PoCMV7-5或与各种PVY菌株结合使用的PoCMV7-5能够在所有接种的马铃薯品种中引起局部感染，但不会引起全身感染。 PoCMV7-5包含卫星RNA的异质变体，其长度由于在大约225.240位核苷酸处的A或/和T缺失/插入而变化。这是关于马铃薯CMV卫星RNA的首次报道。

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