Characterisation of the viral community associated with the Alfalfa Weevil (Hypera postica) and its host plant, Alfalfa (Medicago sativa)

François Sarah, Antoine-Lorquin Aymeric, Kulikowski Maximilien, Frayssinet Marie, Filloux Denis, Fernandez Emmanuel, Roumagnac Philippe, Froissart Rémy, Ogliastro Mylène. 2021. Characterisation of the viral community associated with the Alfalfa Weevil (Hypera postica) and its host plant, Alfalfa (Medicago sativa). Viruses, 13 (5):791, 17 p.

https://doi.org/10.3390/v13050791

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Url - jeu de données - Entrepôt autre : https://www.ncbi.nlm.nih.gov/nuccore/MW676127 / Url - autres données associées : https://CRAN.R-project.org/package=vegan

Quartile : Q2, Sujet : VIROLOGY

Résumé : Advances in viral metagenomics have paved the way of virus discovery by making the exploration of viruses in any ecosystem possible. Applied to agroecosystems, such an approach opens new possibilities to explore how viruses circulate between insects and plants, which may help to optimise their management. It could also lead to identifying novel entomopathogenic viral resources potentially suitable for biocontrol strategies. We sampled the larvae of a natural population of alfalfa weevils (Hypera postica), a major herbivorous pest feeding on legumes, and its host plant alfalfa (Medicago sativa). Insect and plant samples were collected from a crop field and an adjacent meadow. We characterised the diversity and abundance of viruses associated with weevils and alfalfa, and described nine putative new virus species, including four associated with alfalfa and five with weevils. In addition, we found that trophic accumulation may result in a higher diversity of plant viruses in phytophagous pests compared to host plants.

Mots-clés Agrovoc : lutte biologique, ravageur des plantes, lutte biologique contre les ravageurs, Hypera postica, Medicago sativa, virus des insectes, relation plante animal, gestion intégrée des ravageurs

Mots-clés géographiques Agrovoc : France

Mots-clés complémentaires : Métagénomique

Mots-clés libres : Insect pest, Agroecosystem, Viral metagenomics, Virus diversity, Biocontrol

Classification Agris : H10 - Ravageurs des plantes
F40 - Écologie végétale
H01 - Protection des végétaux - Considérations générales

Champ stratégique Cirad : CTS 4 (2019-) - Santé des plantes, des animaux et des écosystèmes

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