Changes in insecticide resistance and host range performance of planthoppers artificially selected to feed on resistant rice.

ABSTRACT: Host plant resistance has received considerable attention for the management of insect herbivores on crop plants. However, resistance is threatened by the rapid adaptation of target herbivores towards virulence (the ability to survive, develop and damage a host with major resistance genes). This study examines the potential costs and benefits of adaptation for virulence in herbivores. We continuously reared planthoppers, Nilaparvata lugens, on two susceptible and three resistant rice, Oryza sativa, varieties for 20 + generations. We then assessed the performance of selected planthoppers across a range of rice lines with distinct resistance genes. We found that planthoppers with long-term exposure to resistant hosts (particularly IR62 with the Bph3(t) and BPH32 g

SUBMITTER: Horgan FG 

PROVIDER: S-EPMC6894310 | biostudies-literature | 2020 Jan

REPOSITORIES: biostudies-literature