Adaptation by copy number variation increases insecticide resistance in the fall armyworm.

ABSTRACT: Understanding the genetic basis of insecticide resistance is a key topic in agricultural ecology. The adaptive evolution of multi-copy detoxification genes has been interpreted as a cause of insecticide resistance, yet the same pattern can also be generated by the adaptation to host-plant defense toxins. In this study, we tested in the fall armyworm, Spodoptera frugiperda (Lepidoptera: Noctuidae), if adaptation by copy number variation caused insecticide resistance in two geographically distinct populations with different levels of resistance and the two host-plant strains. We observed a significant allelic differentiation of genomic copy number variations between the two geographic populations, but not between host-plant strains. A locus with positively selected copy number variation incl

SUBMITTER: Gimenez S 

PROVIDER: S-EPMC7661717 | biostudies-literature | 2020 Nov

REPOSITORIES: biostudies-literature