Publications by authors named "T Marcel"
Background: Septoria tritici blotch (STB) is one of the most damaging wheat diseases worldwide, and the development of resistant cultivars is of paramount importance for sustainable crop management. However, the genetic basis of the resistance present in elite wheat cultivars remains largely unknown, which limits the implementation of this strategy. A collection of 285 wheat cultivars originating mostly from France was challenged with ten Zymoseptoria tritici isolates at the seedling stage.
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- Understanding the genetic basis of how pathogens affect plants is critical for managing fungal diseases, particularly in the context of quantitative traits rather than just strong resistance.
- Using the Zymoseptoria tritici-wheat model, researchers identified 19 key genes linked to quantitative pathogenicity through a comprehensive genome-wide association study.
- The study reveals that genetic diversity, driven by sequence changes and recombination, plays a significant role in how pathogens adapt and affect plants, emphasizing the importance of certain genes in influencing pathogenic traits.
Background: Investigations on plant-pathogen interactions require quantitative, accurate, and rapid phenotyping of crop diseases. However, visual assessment of disease symptoms is preferred over available numerical tools due to transferability challenges. These assessments are laborious, time-consuming, require expertise, and are rater dependent.
View Article and Find Full Text PDFSeptoria leaf blotch is a foliar wheat disease controlled by a combination of plant genetic resistances and fungicides use. gene-based qualitative resistance durability is limited due to gene-for-gene interactions with fungal avirulence () genes. Quantitative resistance is considered more durable but the mechanisms involved are not well documented.
View Article and Find Full Text PDFZymoseptoria tritici is the fungal pathogen responsible for Septoria tritici blotch on wheat. Disease outcome in this pathosystem is partly determined by isolate-specific resistance, where wheat resistance genes recognize specific fungal factors triggering an immune response. Despite the large number of known wheat resistance genes, fungal molecular determinants involved in such cultivar-specific resistance remain largely unknown.
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