Publications by authors named "Ryan Gourlie"
Article Synopsis
- The study focuses on a destructive pathogen of wheat known as tan spot, caused by an ascomycete fungus, which has a highly variable genome influenced by the gain and loss of effector genes.
- Researchers analyzed allelic variations in a specific chlorosis-encoding gene across 422 isolates from different regions and pathotypes, constructing a haplotype network to understand its evolutionary relationships.
- Key findings include discovering a retrotransposon that disrupts gene function, identifying numerous mutations, and recognizing ToxB-like proteins in various other species, implying historical horizontal gene transfer during the evolution of these genes.
Background: In fungal plant pathogens, genome rearrangements followed by selection pressure for adaptive traits have facilitated the co-evolutionary arms race between hosts and their pathogens. Pyrenophora tritici-repentis (Ptr) has emerged recently as a foliar pathogen of wheat worldwide and its populations consist of isolates that vary in their ability to produce combinations of different necrotrophic effectors. These effectors play vital roles in disease development.
View Article and Find Full Text PDFFusarium head blight (FHB) and Fusarium crown and root rot (FCRR) are major wheat diseases. Populations of FHB and FCRR pathogens are highly dynamic, and shifts in these populations in different regions is reported. Analyzing fungal populations associated with wheat node and grain tissues collected from different regions can provide useful information and predict diseases that might affect subsequent crops and effective disease management practices.
View Article and Find Full Text PDFStripe rust, caused by the fungal pathogen f. sp. , is an important wheat disease worldwide.
View Article and Find Full Text PDFis an important fungal pathogen that causes Septoria nodorum blotch (SNB) in wheat. This pathogen produces several necrotrophic effectors that act as virulence factors; three have been cloned, SnToxA, SnTox1, and SnTox3. In this study, and its sister species f.
View Article and Find Full Text PDFThe fungus () causes tan spot, a destructive foliar disease of wheat worldwide. The pathogen produces several necrotrophic effectors, which induce necrosis or chlorosis on susceptible wheat lines. Multiple races of have been identified, based on their ability to produce one or more of these effectors.
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