Vector Biology of the Soft Scales Parthenolecanium corni (Bouché) and Parthenolecanium persicae (Fabricius) (Hemiptera: Coccidae) With Grapevine Leafroll-Associated Viruses and Grapevine Virus A

IF 1.7 3区 农林科学 Q2 ENTOMOLOGY
Gérard Hommay, Antoine Alliaume, Monique Beuve, Jean-Michel Hily, Etienne Herrbach
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Abstract

Controlled experiments were conducted to enrich our knowledge on the transmission of different grapevine leafroll-associated ampeloviruses (GLRaV-1, -2, -3 and -4) by Parthenolecanium corni scale insect and to look for vector ability of Parthenolecanium persicae. GLRaV-1 and the vitivirus GVA were transmitted by P. corni to healthy plants after acquisition on GLRaV-1 and GVA-infected grapevines (Vitis vinifera); however, GVA was not transmitted after acquisition either on GVA singly infected vines or Nicotiana benthamiana, or on purified GVA virions. These results support the hypothesis of ampelovirus assistance towards vitivirus during transmission. Transmission experiments with P. corni and different GLRaV-4 strains showed a single transmission of strain 5. No transmission was observed with P. persicae after acquisition on GLRaV-1, -3 and GVA coinfected source vines. P. corni L2 collected from an infected vine and placed on a nonhost plant tested positive for GLRaV-1 and -3 until at least 30 and 50 days, respectively. These results contrast with the few days retention times generally reported in mealybugs. More work is needed to determine whether virions are conserved and, if so, their location inside the insects.

为了丰富我们对不同的葡萄卷叶相关安培罗病毒(GLRaV-1、-2、-3 和 -4)通过玉米鳞翅目昆虫传播的了解,并寻找柿树鳞翅目昆虫的媒介能力,我们进行了对照实验。在感染了 GLRaV-1 和 GVA 的葡萄藤(葡萄)上获得 GLRaV-1 和葡萄病毒 GVA 后,P. corni 可将其传播给健康植物;但在获得 GVA 单个感染的葡萄藤或烟草上,或在纯化的 GVA 病毒上,GVA 不会传播。这些结果支持了安培拉病毒在传播过程中协助葡萄病毒传播的假设。用玉米螟和不同的 GLRaV-4 株系进行的传播实验表明,5 株系只传播一次。从 GLRaV-1、-3 和 GVA 共感染源葡萄藤上采集的 P. persicae 没有发生传播。从受感染的葡萄藤上采集的玉米螟 L2,放在非寄主植物上至少 30 天和 50 天后,GLRaV-1 和 -3 的检测结果均为阳性。这些结果与一般报告的蚧壳虫几天的保留时间形成鲜明对比。还需要做更多的工作来确定病毒是否保存下来,如果保存下来,它们在昆虫体内的位置如何。
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来源期刊
CiteScore
3.40
自引率
5.30%
发文量
132
审稿时长
6 months
期刊介绍: The Journal of Applied Entomology publishes original articles on current research in applied entomology, including mites and spiders in terrestrial ecosystems. Submit your next manuscript for rapid publication: the average time is currently 6 months from submission to publication. With Journal of Applied Entomology''s dynamic article-by-article publication process, Early View, fully peer-reviewed and type-set articles are published online as soon as they complete, without waiting for full issue compilation.
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