The atypical resistance gene, RPW8, recruits components of basal defence for powdery mildew resistance in Arabidopsis

The atypical resistance gene, RPW8, recruits components of basal defence for powdery mildew resistance in Arabidopsis.

Genetic studies have identified a number of components of signal transduction pathways leading to plant disease resistance and the accompanying hypersensitive response (HR) following detection of pathogens by plant resistance (R) genes. In Arabidopsis, the majority of R proteins so far characterized belong to a plant superfamily that have a central nucleotide-binding site and C-terminal leucine...

The Arabidopsis RPW8 resistance protein is recruited to the extrahaustorial membrane of biotrophic powdery mildew fungi.

An Arabidopsis mutant with enhanced resistance to powdery mildew.

We have identified an Arabidopsis mutant that displays enhanced disease resistance to the fungus Erysiphe cichoracearum, causal agent of powdery mildew. The edr1 mutant does not constitutively express the pathogenesis-related genes PR-1, BGL2, or PR-5 and thus differs from previously described disease-resistant mutants of Arabidopsis. E. cichoracearum conidia (asexual spores) germinated normall...

Natural genetic resources of Arabidopsis thaliana reveal a high prevalence and unexpected phenotypic plasticity of RPW8-mediated powdery mildew resistance.

Here, an approach based on natural genetic variation was adopted to analyse powdery mildew resistance in Arabidopsis thaliana. Accessions resistant to multiple powdery mildew species were crossed with the susceptible Col-0 ecotype and inheritance of resistance was analysed. Histochemical staining was used to visualize archetypal plant defence responses such as callose deposition, hydrogen perox...

Isolation of a Major Resistance Gene to Powdery Mildew

................................................ 2 Executive summary .................................................. 3 Background ................................................. 5 Project Aims & Performance targets .................................................. 6 Methods ................................................. 7 Results / Discussion ..............................................