This is a presentation about the progress we made in understanding the mechanisms underlying grape trunk diseases with the objective to (i) facilitate the development of more accurate diagnostic tools and (ii) assist the effort to identify genetic sources of tolerance in the grape germplasm.
Link to presentation: Molecular determinants of wood colonization by trunk pathogens
Philippe E. Rolshausen
Rohslausen discusses how cell wall chemical composition and differences in wood anatomy could be responsible for variance in susceptibility between different cultivars.
Link to the presentation: “Identifying biochemical and anatomical markers of resistance in grape, almond & pistachio wood“
Goal– To determine if water stress exacerbates infection and test specificity of host-based markers to infection
Activities – Identification of host-based markers specific to infection and water stress
Two watering regimes tested:
- Well-watered control
- Severe water stress (16-17 bars leaf water potential)
Three inoculation regimes tested:
- NINW: non-inoculated non-wounded
- NIW: non-inoculated wounded
- IW: inoculated wounded
Results & Outputs – To understand how abiotic stress can influence disease progression and to validate molecular marker specificity to Neofusicoccumparvum.