A New Prevalent Densovirus Discovered in Acari. Insight from Metagenomics in Viral Communities Associated with Two-Spotted Mite (Tetranychus urticae) Populations | A New Prevalent Densovirus Discovered in Acari. Insight from Metagenomics in Viral Communities Associated with Two-Spotted Mite (Tetranychus urticae) Populations: Metagenomics in Viral Communities Associated with Two-Spotted Mite (Tetranychus urticae) Populations
2019
François, Sarah | Mutuel, Doriane | Duncan, Alison | Rodrigues, Leonor | Danzelle, Celya | Lefevre, Sophie | Santos, Inês | Frayssinet, Marie | Fernandez, Emmanuel | Filloux, Denis | Roumagnac, Philippe | Froissart, Rémy | Ogliastro, Mylène | Diversité, Génomes & Interactions Microorganismes - Insectes [Montpellier] (DGIMI) ; Institut National de la Recherche Agronomique (INRA)-Université Montpellier 2 - Sciences et Techniques (UM2)-Université de Montpellier (UM) | Institut des Sciences de l'Evolution de Montpellier (UMR ISEM) ; Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-École Pratique des Hautes Études (EPHE) ; Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Montpellier (UM)-Institut de recherche pour le développement [IRD] : UR226-Centre National de la Recherche Scientifique (CNRS) | Centre for Ecology, Evolution and Environmental Changes (cE3c) ; Universidade de Lisboa = University of Lisbon = Université de Lisbonne (ULISBOA) | 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) | Du gène à l'écosystème (MIVEGEC-GeneSys) ; Pathogènes, Environnement, Santé Humaine (EPATH) ; 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])-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD [Occitanie])-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])-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD [Occitanie]) | Plant Health and Environment INRA division (SPE); H2020-EU VIROPLANT grant [773567]; PHC-PESSOA grant [38014YC]
Viral metagenomics and high throughput sequence mining have revealed unexpected diversity, and the potential presence, of parvoviruses in animals from all phyla. Among arthropods, this diversity highlights the poor knowledge that we have regarding the evolutionary history of densoviruses. The aim of this study was to explore densovirus diversity in a small arthropod pest belonging to Acari, the two-spotted spider mite Tetranychus urticae, while using viral metagenomics based on virus-enrichment. Here, we present the viromes obtained from T. urticae laboratory populations made of contigs that are attributed to nine new potential viral species, including the complete sequence of a novel densovirus. The genome of this densovirus has an ambisens genomic organization and an unusually compact size with particularly small non-structural proteins and a predicted major capsid protein that lacks the typical PLA2 motif that is common to all ambidensoviruses described so far. In addition, we showed that this new densovirus had a wide prevalence across populations of mite species tested and a genomic diversity that likely correlates with the host phylogeny. In particular, we observed a low densovirus genomic diversity between the laboratory and natural populations, which suggests that virus within-species evolution is probably slower than initially thought. Lastly, we showed that this novel densovirus can be inoculated to the host plant following feeding by infected mites, and circulate through the plant vascular system.These findings offer new insights into densovirus prevalence, evolution, and ecology.
Mostrar más [+] Menos [-]Palabras clave de AGROVOC
Información bibliográfica
Este registro bibliográfico ha sido proporcionado por Institut national de la recherche agronomique