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Mixed infections of type I resistant codling moth larvae in treated orchard leaves

Abstract : We have previously demonstrated the occurrence of mixed infections when susceptible codling moth larvae were allowed to feed on apple leaves sprayed with Carpovirusine EVO2. Carpovirusine EVO2 contains both CpGV-M and CpGV-R5 genotypes. Now we present the dynamics of infections on larvae carrying a type I resistance. To that aim, we collected apple leaves just after a standard treatment of Carpovirusine EVO2 on an orchard. Neonate larvae of the RGV laboratory colony that carry the type I resistance, were deposed onto the leaves and allowed to eat for selected lengths of time, then transferred to clean rearing media. The infection status was individually analyzed after 7 days by qPCR followed by High Resolution Melting. No single CpGV-M infection was observed. The probability of mixed infections increased when increasing the time of feeding on the leaves.
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https://hal.mines-ales.fr/hal-03276614
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Submitted on : Friday, July 2, 2021 - 11:40:37 AM
Last modification on : Friday, October 22, 2021 - 2:38:21 PM

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  • HAL Id : hal-03276614, version 1

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Aurélie Hinsberger, Christine Blachère-Lopez, Miguel Lopez-Ferber. Mixed infections of type I resistant codling moth larvae in treated orchard leaves. 2021 International Congress on Invertebrate Pathology and Microbial Control & 53rd Annual Meeting of the Society for Invertebrate Pathology, Jun 2021, Virtual Meeting, France. ⟨hal-03276614⟩

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