Progressive adaptation of a CpGV isolate to codling moth populations resistant to CpGV-M
2014
Graillot, Benoit | Berling, Marie | Blachère-Lopez, Christine | Siegwart, Myriam | Besse, Samantha | Lopez-Ferber, Miguel | Laboratoire de Génie de l'Environnement Industriel (LGEI) ; IMT - MINES ALES (IMT - MINES ALES) ; Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT) | Natural Plant Protection ; Arysta LifeScience Group | Département Santé des Plantes et Environnement (DPT SPE) ; Institut National de la Recherche Agronomique (INRA) | Unité de recherche Plantes et Systèmes de Culture Horticoles (PSH) ; Institut National de la Recherche Agronomique (INRA) | Agence Nationale de la Recherche [ANR06-RIB-003-02]; French Association Nationale de la Recherche et de la Technologie doctoral grant; Ecole des mines d'Ales | European Project: 265865,EC:FP7:KBBE,FP7-KBBE-2010-4,PURE(2011)
International audience
Mostrar más [+] Menos [-]Inglés. The NPP-R1 isolate of CpGV is able to replicate on CpGV-M-resistant codling moths. However, its efficacy is not sufficient to provide acceptable levels of control in natural (orchard) conditions. A laboratory colony derived from resistant codling moths was established, which exhibited a homogeneous genetic background and a resistance level more than 7000 fold. By successive cycles of replication of NPP-R1 in this colony, we observed a progressive increase in efficacy. After 16 cycles (isolate 2016-r16), the efficacy of the virus isolate was equivalent to that of CpGV-M on susceptible insects. This isolate was able to control both CpGV-M-susceptible and CpGV-M-resistant insects with similar efficacy. No reduction in the levels of occlusion body production in susceptible larvae was observed for 2016-r16 compared to CpGV-M.
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