Natural plant disease suppressiveness in soils extends to insect pest control.

ABSTRACT:

Background

Since the 1980s, soils in a 22-km² area near Lake Neuchâtel in Switzerland have been recognized for their innate ability to suppress the black root rot plant disease caused by the fungal pathogen Thielaviopsis basicola. However, the efficacy of natural disease suppressive soils against insect pests has not been studied.

Results

We demonstrate that natural soil suppressiveness also protects plants from the leaf-feeding pest insect Oulema melanopus. Plants grown in the most suppressive soil have a reduced stress response to Oulema feeding, reflected by dampened levels of herbivore defense-related phytohormones and benzoxazinoids. Enhanced salicylate levels in insect-free plants indicate defense-priming operating in this soil. The rhizosphere microbiome of

SUBMITTER: Harmsen N 

PROVIDER: S-EPMC11251354 | biostudies-literature | 2024 Jul

REPOSITORIES: biostudies-literature