Transmission of Tomato chlorosis virus (ToCV) by Bemisia tabaci Biotype Q and Evaluation of Four Weed Species as Viral Sources
Transmission of Tomato chlorosis virus (ToCV) by Bemisia tabaci Biotype Q and Evaluation of Four Weed Species as Viral Sources
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DOI：
10.1094/pdis-01-16-0054-re
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发表时间：
2016-10-01
期刊：
影响因子：
4.5
通讯作者：
Maliogka, V. I.
中科院分区：
文献类型：
--
作者：
Orfanidou, C. G.;Pappi, P. G.;Maliogka, V. I.
番茄褪绿病毒（ToCV）与世界上许多国家的番茄黄化病有关。它的宿主范围很广，包括栽培物种和可耕杂草，并且它以半持久性的方式通过至少五种粉虱物种或粉虱属和粉虱属的生物型传播。ToCV不是种子传播的，有超过36种杂草被记录为天然水库，在收获易感作物时作为病毒及其载体的独特来源。在这项研究中，进行了实验，以确定ToCV的传输参数的生物型Q，最丰富的生物型烟粉虱在希腊。结果表明，生物型Q是ToCV的有效载体，它能够保留病毒至少6天。然后，该载体用于评估四种广泛分布的杂草物种（龙葵，苦苣菜，反枝苋，藜）作为ToCV源通过传输实验。在供试杂草中，龙葵是最重要的病毒源，其次是苦苣菜、苦苣苔、苜蓿和苜蓿。retroflexus和C.专辑然而，它们中没有一个是像番茄那样有效的ToCV来源。这种变化可能是由于病毒浓度的差异，在每个植物物种或可能的主机偏好的粉虱载体。
Tomato chlorosis virus (ToCV) is implicated in tomato yellows disease in many countries worldwide. It has a wide host range, including cultivated species as well as arable weeds, and it is transmitted in a semipersistent manner by at least five whitefly species or biotypes of the genera Trialeurodes and Bemisia. ToCV is not seed transmitted and more than 36 weed species have been recorded as natural reservoirs, acting as unique sources both for the virus and its vectors when susceptible crops are harvested. In this study, experiments were conducted to determine the transmission parameters of ToCV by biotype Q, the most abundant biotype of Bemisia tabaci in Greece. Results showed that biotype Q is an efficient vector of ToCV and it is able to retain the virus for at least 6 days. This vector was then used for the evaluation of four widespread weed species (Solanum nigrum, Sonchus oleraceus, Amaranthus retroflexus, and Chenopodium album) as ToCV sources through transmission experiments. Solanum nigrum was shown to be the most significant viral source among the tested weeds, followed by Sonchus oleraceus, A. retroflexus, and, lastly, C. album. Nevertheless, none of them was as efficient a ToCV source as tomato. This variation could be attributed to differences in virus concentration in each plant species or possible host preference by the whitefly vector.