Plant infection by two different viruses induce contrasting changes of vectors fitness and behavior

Quentin Chesnais; Aude Couty; Maryline Uzest; Véronique Brault; Arnaud Ameline

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Plant infection by two different viruses induce contrasting changes of vectors fitness and behavior

机译：两种不同病毒对植物的感染导致载体适应性和行为发生相反的变化

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Insect-vectored plant viruses can induce changes in plant phenotypes,thus influencing plant-vector interactions in a way that may promote their dispersal according to their mode of transmission (i.e.,circulative vs.noncirculative).This indirect vector manipulation requires host-virus-vector coevolution and would thus be effective solely in very specific plant-virus-vector species associations.Some studies suggest this manipulation may depend on multiple factors relative to various intrinsic characteristics of vectors such as transmission efficiency.In anintegrative study,we tested the effects of infection of the Brassicaceae Camelina sativa with the noncirculative Cauliflower mosaic virus (CaMV) or the circulative Turnip yellows virus (TuYV) on the host-plant colonization of two aphid species differing in their virus transmission efficiency:the polyphagous Myzus persicae,efficient vector of both viruses,and the Brassicaceae specialist Brevicoryne brassicae,poor vector of TuYV and efficient vector of CaMV.Results confirmed the important role of virus mode of transmission as plant-mediated effects of CaMV on the two aphid species induced negative alterations of feeding behavior (i.e.,decreased phloem sap ingestion) and performance that were both conducive for virus fitness by promoting dispersion after a rapid acquisition.In addition,virus transmission efficiency may also play a role in vector manipulation by viruses as only the responses of the efficient vector to plant-mediated effects of TuYV,that is,enhanced feeding behavior and performances,were favorable to their acquisition and further dispersal.Altogether,this work demonstrated that vector transmission efficiency also has to be considered when studying the mechanisms underlying vector manipulation by viruses.Our results also reinforce the idea that vector manipulation requires coevolution between plant,virus and vector.

机译：昆虫载体植物病毒可以诱导植物表型发生变化，从而以某种方式影响植物载体相互作用，从而根据其传播方式（即循环与非循环）促进其传播。这种间接载体操纵需要宿主病毒-载体协同进化，因此仅在非常特定的植物-病毒-载体物种关联中有效。一些研究表明，这种操纵可能取决于与载体的各种固有特征相关的多个因素，例如传播效率。在一项综合研究中，我们测试了非循环性花椰菜花叶病毒（CaMV）或循环性芜菁黄病毒（TuYV）侵染十字花科植物对两种蚜虫的寄主定植，其传播途径不同：多食性Myzus persicae，这两种植物的有效载体病毒，以及十字花科植物Brevicoryne Brassicae，TuYV的载体较差且效果良好结果证实了病毒传播模式的重要作用，因为植物介导的CaMV对两种蚜虫的诱导介导的进食行为（即韧皮部汁液摄入减少）的负面变化（均有助于病毒适应性）此外，病毒的传播效率也可能在病毒的载体操纵中发挥作用，因为仅有效载体对植物介导的TuYV效应的反应，即增强了饲喂行为和性能。总而言之，这项工作表明，在研究病毒对载体的操纵机理时，还必须考虑载体的传播效率。我们的结果也强化了载体操纵需要植物，病毒和载体之间共同进化的思想。

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《中国昆虫科学：英文版》 |2019年第1期|86-96|共11页
作者
Quentin Chesnais; Aude Couty; Maryline Uzest; Véronique Brault; Arnaud Ameline;
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FRE CNRS 3498 EDYSAN((E)cologie et Dynamique des Systèmes Anthropisés), Université de Picardie Jules Verne, 33 rue St Leu, 80039 Amiens Cedex, France;

FRE CNRS 3498 EDYSAN((E)cologie et Dynamique des Systèmes Anthropisés), Université de Picardie Jules Verne, 33 rue St Leu, 80039 Amiens Cedex, France;

INRA, UMR 0385 BGPI, CIRAD-INRA-Montpellier SupAgro, TA A54/KCampus International de Baillarguet, 34394 Montpellier Cedex 5, France;

UMR 1131 SVQV, INRA-UDS, 28, rue de Herrlisheim, 68021 Colmar Cedex, France;

FRE CNRS 3498 EDYSAN((E)cologie et Dynamique des Systèmes Anthropisés), Université de Picardie Jules Verne, 33 rue St Leu, 80039 Amiens Cedex, France;

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Plant infection by two different viruses induce contrasting changes of vectors fitness and behavior

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