A virus responds instantly to the presence of the vector on the host and forms transmission morphs
2013
Martiniere, Alexandre | Bak, Aurélie | Macia, Jean Luc | Lautredou, Nicole | Gargani, Daniel | Doumayrou, Juliette | Garzo, Elisa | Moreno, Aranzazu | Fereres, Alberto | Blanc, Stéphane | Drucker, Martin | Biochimie et Physiologie Moléculaire des Plantes (BPMP) ; Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro) | Biologie et Génétique des Interactions Plante-Parasite (UMR BGPI) ; Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro) | Institut de génétique humaine (IGH) ; Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS) | Maladies infectieuses et vecteurs : écologie, génétique, évolution et contrôle (MIVEGEC) ; Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD [Occitanie]) | Department of Crop Protection, Institute of Agricultural Sciences ; Consejo Superior de Investigaciones Cientificas [España] = Spanish National Research Council [Spain] (CSIC)
Equipe 2
Mostrar más [+] Menos [-]Inglés. Many plant and animal viruses are spread by insect vectors. Cauliflower mosaic virus (CaMV) is aphid-transmitted, with the virus being taken up from specialized transmission bodies (TB) formed within infected plant cells. However, the precise events during TB-mediated virus acquisition by aphids are unknown. Here, we show that TBs react instantly to the presence of the vector by ultra-rapid and reversible redistribution of their key components onto microtubules throughout the cell. Enhancing or inhibiting this TB reaction pharmacologically or by using a mutant virus enhanced or inhibited transmission, respectively, confirming its requirement for efficient virus-acquisition. Our results suggest that CaMV can perceive aphid vectors, either directly or indirectly by sharing the host perception. This novel concept in virology, where viruses respond directly or via the host to the outside world, opens new research horizons, that is, investigating the impact of ‘perceptive behaviors’ on other steps of the infection cycle
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