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Phylogenomics of Plasmopara halstedii Reveals Genomic Regions Associated With the Breakdown of Sunflower Downy Mildew Resistance Genes.

Molecular ecology - 1 Feb 2026

Pecrix Yann, Dvorak Etienne, Labbé Frédéric, Legrand Ludovic, Carrère Sébastien, Gouzy Jérôme, Delmotte François, Besnard Guillaume, Godiard Laurence

Abstract excerpt

Understanding the genetic diversity and evolutionary history of plant pathogens is crucial for effective disease management strategies. Sunflower downy mildew, caused by the oomycete Plasmopara halstedii, is a worldwide threat to the sunflower oil crop. We aimed to explain through phylogenomic studies how downy mildew resistance breakdown occurred recurrently in the last decades in France, leading to new...

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PMID: 41700370
DOI: 10.1111/mec.70270
PMCID: PMC12910423

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