Phenotypic and genetic resistance to Septoria blotch disease in European wheat varieties.
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| Main Authors: | , , , |
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| Format: | Artículo científico |
| Language: | en |
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The plant genome
2026
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| _version_ | 1868266067035422722 |
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| author | Copeland, Conor Isidro Y Sánchez, Julio Fanelli, Humberto Doohan, Fiona M |
| author_facet | Copeland, Conor Isidro Y Sánchez, Julio Fanelli, Humberto Doohan, Fiona M Copeland, Conor Isidro Y Sánchez, Julio Fanelli, Humberto Doohan, Fiona M |
| collection | PubMed - marine biology |
| contents | Phenotypic and genetic resistance to Septoria blotch disease in European wheat varieties. Copeland, Conor Isidro Y Sánchez, Julio Fanelli, Humberto Doohan, Fiona M Triticum Plant Diseases Ascomycota Disease Resistance Phenotype Genome-Wide Association Study Europe Zymoseptoria tritici, the causal agent of Septoria tritici blotch (STB), poses a critical threat to wheat (Triticum aestivum L.) production in temperate Europe, underscoring the need for durable genetic resistance. Here, we screened 151 winter wheat varieties at the seedling stage using a mixed inoculum of five virulent isolates. Disease severity was quantified at 14, 21, and 28 days post-inoculation to calculate the area under the disease progress curve. We observed broad phenotypic variation, with higher susceptibility in Southern European germplasm. A genome-wide association study identified three significantly resistant loci: IWB5774 on chromosome 2D, and IWB72742 and IWB11406 on chromosome 1B. Functional annotation mapped these markers to high-priority candidate genes, including a TaBx3D-like protein, the endomembrane trafficking regulator WDR91, and NAP1, a nucleosome assembly factor involved in stress signaling. These findings provide robust molecular markers for breeding and nominate specific targets for functional validation of STB resistance mechanisms. |
| format | Artículo científico |
| id | pubmed_41906788 |
| institution | PubMed |
| language | en |
| publishDate | 2026 |
| publisher | The plant genome |
| record_format | pubmed |
| spellingShingle | Phenotypic and genetic resistance to Septoria blotch disease in European wheat varieties. Copeland, Conor Isidro Y Sánchez, Julio Fanelli, Humberto Doohan, Fiona M Triticum Plant Diseases Ascomycota Disease Resistance Phenotype Genome-Wide Association Study Europe Phenotypic and genetic resistance to Septoria blotch disease in European wheat varieties. Copeland, Conor Isidro Y Sánchez, Julio Fanelli, Humberto Doohan, Fiona M Triticum Plant Diseases Ascomycota Disease Resistance Phenotype Genome-Wide Association Study Europe Zymoseptoria tritici, the causal agent of Septoria tritici blotch (STB), poses a critical threat to wheat (Triticum aestivum L.) production in temperate Europe, underscoring the need for durable genetic resistance. Here, we screened 151 winter wheat varieties at the seedling stage using a mixed inoculum of five virulent isolates. Disease severity was quantified at 14, 21, and 28 days post-inoculation to calculate the area under the disease progress curve. We observed broad phenotypic variation, with higher susceptibility in Southern European germplasm. A genome-wide association study identified three significantly resistant loci: IWB5774 on chromosome 2D, and IWB72742 and IWB11406 on chromosome 1B. Functional annotation mapped these markers to high-priority candidate genes, including a TaBx3D-like protein, the endomembrane trafficking regulator WDR91, and NAP1, a nucleosome assembly factor involved in stress signaling. These findings provide robust molecular markers for breeding and nominate specific targets for functional validation of STB resistance mechanisms. |
| title | Phenotypic and genetic resistance to Septoria blotch disease in European wheat varieties. |
| topic | Triticum Plant Diseases Ascomycota Disease Resistance Phenotype Genome-Wide Association Study Europe |
| url | https://pubmed.ncbi.nlm.nih.gov/41906788/ |