Virus epidemics, plant-controlled population bottlenecks and the durability of plant resistance.

ABSTRACT: Plant qualitative resistances to viruses are natural exhaustible resources that can be impaired by the emergence of resistance-breaking (RB) virus variants. Mathematical modelling can help determine optimal strategies for resistance durability by a rational deployment of resistance in agroecosystems. Here, we propose an innovative approach, built up from our previous empirical studies, based on plant cultivars combining qualitative resistance with quantitative resistance narrowing population bottlenecks exerted on viruses during host-to-host transmission and/or within-host infection. Narrow bottlenecks are expected to slow down virus adaptation to plant qualitative resistance. To study the effect of bottleneck size on yield, we developed a stochastic epidemic model with mixtures of suscept

SUBMITTER: Rousseau E 

PROVIDER: S-EPMC6553610 | biostudies-literature | 2019 Jun

REPOSITORIES: biostudies-literature