Host range extension of Cydia pomonella granulovirus: adaptation to Oriental Fruit Moth, Grapholita molesta

Among various Cydia pomonella granulovirus (CpGV) isolates, the Mexican isolate (CpGV-M) has demonstrated a significant ability to reduce damage induced by the oriental fruit moth, Grapholita molesta (Busck) (= Cydia molesta ) in peach crops. To obtain a more efficient virus for G. molesta control,...

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Bibliographic Details
Published in:BioControl (Dordrecht, Netherlands) Netherlands), 2017-02, Vol.62 (1), p.19-27
Main Authors: Graillot, Benoit, Blachère-López, Christine, Besse, Samantha, Siegwart, Myriam, López-Ferber, Miguel
Format: Article
Language:English
Subjects:
Adaptation
Agriculture
Animal Biochemistry
Animal Ecology
Behavioral Sciences
Bioassays
Biomedical and Life Sciences
Butterflies & moths
Cydia pomonella
Effectiveness
Entomology
Fruits
Granulovirus
Grapholita molesta
Host range
Insecticides
Larvae
Life Sciences
Mixtures
Occlusion
Occlusion bodies
Plant Pathology
Prunus
Range extension
Vegetal Biology
Viruses
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Summary:Among various Cydia pomonella granulovirus (CpGV) isolates, the Mexican isolate (CpGV-M) has demonstrated a significant ability to reduce damage induced by the oriental fruit moth, Grapholita molesta (Busck) (= Cydia molesta ) in peach crops. To obtain a more efficient virus for G. molesta control, an experimental virus population was constructed by mixing various CpGV isolates. This mixture was then selected for replication in a G. molesta laboratory colony. After 12 successive passages on this alternative host, the insecticidal efficacy of the virus population had improved. The concentration of virus occlusion bodies required to kill 90 % of neonate larvae was 450-fold lower than that of the original isolate mixture, and 120-fold lower than that of the CpGV-M isolate alone. Following adaptation to this alternative host, the efficacy against its natural host, the codling moth, C. pomonella , was conserved. This mixed isolate population can be produced on C. pomonella without loss of efficacy, which is useful from a commercial production perspective. This adapted virus isolate mixture is likely to prove more effective than individual component isolates at controlling G. molesta .
ISSN:1386-6141
1573-8248
DOI:10.1007/s10526-016-9772-x