Characterisation of aphid antixenosis in aphid-resistant ancestor wheat, Triticum monococcum.

ABSTRACT:

Background

Due to the increasing presence of insecticide resistance across cereal aphid populations, new aphid management strategies, including the engineering of host resistance to aphids into commercial wheat varieties, are required. Previous studies have identified ancestor wheat, Triticum monococcum accessions MDR045 and MDR049, with resistance against the grain aphid, Sitobion avenae. To test the hypothesis that resistance can be accounted for by antixenosis (reduced attractiveness of host plants) via the release of repellent volatile organic compounds (VOCs), we explored the response of S. avenae to MDR045 and MDR049 following S. avenae herbivory, using behaviour and electrophysiology experiments.

Results

In four-arm olfactometry assays, alate S. avenae showed aphid de

SUBMITTER: Borg AN 

PROVIDER: S-EPMC12539387 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature