single sex‐linked dominant gene does not fully explain the codling moth's resistance to granulovirus

BACKGROUND: In 2004, resistance to a commercial formulation of the Cydia pomonella granulovirus (CpGV) was identified in a field population of Cydia pomonella from an organic orchard in southern France. The genetic inheritance of this resistance was analysed in the resistant laboratory strain RGV. T...

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Bibliographic Details
Published in:Pest management science 2013-11, Vol.69 (11), p.1261-1266
Main Authors: Berling, Marie, Sauphanor, Benoît, Bonhomme, Antoine, Siegwart, Myriam, Lopez‐Ferber, Miguel
Format: Article
Language:English
Subjects:
Agricultural sciences
Animals
at-risk population
Biological and medical sciences
Biological control
Butterflies & moths
Chromosomes
codling moth
Control
CpGV
Cydia pomonella
Cydia pomonella granulovirus
dominant genes
Female
Flowers & plants
Fundamental and applied biological sciences. Psychology
Genes
Genes, Dominant
Granulovirus
Granulovirus - physiology
inheritance
inheritance (genetics)
Insect Proteins - genetics
Insect Proteins - immunology
introgression
Life Sciences
loci
major genes
Male
Moths - genetics
Moths - immunology
Moths - virology
Pest control
Pest Control, Biological
Phytopathology. Animal pests. Plant and forest protection
Protozoa. Invertebrates
resistance
Sex Factors
sex linkage
Viruses
Z chromosome
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Summary:BACKGROUND: In 2004, resistance to a commercial formulation of the Cydia pomonella granulovirus (CpGV) was identified in a field population of Cydia pomonella from an organic orchard in southern France. The genetic inheritance of this resistance was analysed in the resistant laboratory strain RGV. This strain was obtained using successive crosses between the resistant field population and a susceptible laboratory strain, SV, with selection for CpGV resistance at each generation. RESULTS: After eight generations of introgression of the resistant trait into SV, the RGV‐8 strain exhibited 7000‐fold higher resistance than SV. Mass‐crossing experiments showed that resistance to CpGV is strongly dominant, sex dependent and under the control of a single major gene. However, the contribution of other genes is required to explain all of the data obtained in this study. These additional genes do not follow the laws of classical Mendelian transmission. CONCLUSION: Transmission of granulovirus resistance in the RGV‐8 strain of C. pomonella cannot be fully explained by the effect of a locus located on the Z chromosome. The action of other factors needs to be considered. © 2013 Society of Chemical Industry
ISSN:1526-498X
1526-4998
DOI:10.1002/ps.3493