Interactive Responses of Solanum Dulcamara to Drought and Insect Feeding are Herbivore Species-Specific.

ABSTRACT: In nature, plants are frequently subjected to multiple biotic and abiotic stresses, resulting in a convergence of adaptive responses. We hypothesised that hormonal signalling regulating defences to different herbivores may interact with drought responses, causing distinct resistance phenotypes. To test this, we studied the hormonal and transcriptomic responses of Solanum dulcamara subjected to drought and herbivory by the generalist Spodoptera exigua (beet armyworm; BAW) or the specialist Leptinotarsa decemlineata (Colorado potato beetle; CPB). Bioassays showed that the performance of BAW, but not CPB, decreased on plants under drought compared to controls. While drought did not alter BAW-induced hormonal responses, it enhanced the CPB-induced accumulation of jasmonic

SUBMITTER: Nguyen D 

PROVIDER: S-EPMC6321310 | biostudies-literature | 2018 Dec

REPOSITORIES: biostudies-literature