Variation in intrinsic resistance of pea aphids to parasitoid wasps: A transcriptomic basis.

ABSTRACT: Evolutionary interactions between parasitoid wasps and insect hosts have been well studied at the organismal level, but little is known about the molecular mechanisms that insects use to resist wasp parasitism. Here we study the interaction between a braconid wasp (Aphidius ervi) and its pea aphid host (Acyrthosiphon pisum). We first identify variation in resistance to wasp parasitism that can be attributed to aphid genotype. We then use transcriptome sequencing to identify genes in the aphid genome that are differentially expressed at an early stage of parasitism, and we compare these patterns in highly resistant and susceptible aphid host lines. We find that resistant genotypes are upregulating genes involved in carbohydrate metabolism and several key innate immune system genes in respon

SUBMITTER: McLean AHC 

PROVIDER: S-EPMC7673541 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature