Aphids as transport devices for plant viruses |
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Authors: | Véronique Brault Maryline Uzest Baptiste Monsion Emmanuel Jacquot Stéphane Blanc |
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Affiliation: | 1. UMR SVQV, INRA-UDS, 28, rue de Herrlisheim, 68021 Colmar cedex, France;2. UMR BGPI, INRA-CIRAD-SupAgro, TA-A54/K, campus international de Baillarguet, 34398 Montpellier cedex 05, France;3. UMR BiO3P, INRA-Agrocampus Ouest-Université Rennes 1, Domaine de la Motte, BP 35327, 35653 Le-Rheu cedex, France |
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Abstract: | Plant viruses have evolved a wide array of strategies to ensure efficient transfer from one host to the next. Any organism feeding on infected plants and traveling between plants can potentially act as a virus transport device. Such organisms, designated vectors, are found among parasitic fungi, root nematodes and plant-feeding arthropods, particularly insects. Due to their extremely specialized feeding behavior – exploring and sampling all plant tissues, from the epidermis to the phloem and xylem – aphids are by far the most important vectors, transmitting nearly 30% of all plant virus species described to date. Several different interaction patterns have evolved between viruses and aphid vectors and, over the past century, a tremendous number of studies have provided details of the underlying mechanisms. This article presents an overview of the different types of virus-aphid relationships, state-of-the-art knowledge of the molecular processes underlying these interactions, and the remaining black boxes waiting to be opened in the near future. |
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