Absence of seed-mediated transmission of cucumber mosaic virus in Espelette pepper crops despite widespread and recurrent epidemics
2023
Hirsch, Judith | Szadkowski, Marion | Wipf-Scheibel, Catherine | Lepage, Elise | Dumeaux, Paul | Nguyen, Elodie | Verdin, Eric | Moury, Benoît | Rimbaud, Loup | Unité de Pathologie Végétale (PV) ; Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) | AgroParisTech | Biostatistique et Processus Spatiaux (BioSP) ; Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) | Syndicat du Piment d’Espelette AOP | Agropolis Fondation project 2101-035 | MDPI | ANR-22-CE32-0004,COMBINE,Associer des variétés pour canaliser l'adaptation des populations phytopathogènes : comment résoudre le compromis efficacité – durabilité - adoption(2022)
International audience
Afficher plus [+] Moins [-]anglais. In the past decade, severe epidemics of cucumber mosaic virus (CMV) have caused significant damage to Espelette pepper crops. This virus threatens the production of Espelette pepper, which plays a significant role in the local economy and touristic attractiveness of the French Basque Country, located in southwestern France. In 2021 and 2022, CMV was detected via double-antibody sandwich enzyme-linked immunosorbent assays (DAS-ELISAs) in Gorria pepper seed lots harvested from naturally infected fields scattered throughout the entire Espelette pepper production area. These seed lots were used in greenhouse grow-out tests to determine whether CMV could be transmitted to seedlings from contaminated seeds, using visual symptom assessment, DAS-ELISAs, and reverse transcription-polymerase chain reaction (RT-PCR). Despite the widespread occurrence of CMV in seeds of field samples, the grow-out experiments on a total of over 5000 seedlings yielded no evidence of seed transmission of local CMV isolates in Gorria pepper. Therefore, rather than seeds from infected pepper plants, sources of CMV inoculum in Espelette are more likely to be alternative hosts present in and around pepper fields that can allow for the survival of CMV during the off-season. These results have important epidemiological implications and will guide the choice of effective measures to control current epidemics.
Afficher plus [+] Moins [-]Mots clés AGROVOC
Informations bibliographiques
Cette notice bibliographique a été fournie par Institut national de la recherche agronomique
Découvrez la collection de ce fournisseur de données dans AGRIS