Publications by authors named "J Amselem"

() is a phytopathogenic fungus causing significant economic losses on forage legume crops ( and species) worldwide. To gain insights into the genetic basis of fungal virulence and host specificity, we sequenced the genome of an isolate from using long-read (PacBio) technology. The resulting genome assembly has a total length of 51.

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Article Synopsis
  • 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.
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Zymoseptoria 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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Endogenous viruses form an important proportion of eukaryote genomes and a source of novel functions. How large DNA viruses integrated into a genome evolve when they confer a benefit to their host, however, remains unknown. Bracoviruses are essential for the parasitism success of parasitoid wasps, into whose genomes they integrated ~103 million years ago.

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