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Poster

Session: Session 1 Presenting Authors at Posters (Evens)

P-276 - Diversity of Hyaloperonospora arabidopsidis Effectors in Natural Populations

Tuesday, July 15, 2025
09:55 - 11:30  
Location: Confex Hall 3
Population Biology, Ecology & Genomics

    Presenting Author(s)

  • CH

    Ching-Yi Huang

    Max Planck Institute for Biology
    Reutlingen, Baden-Wurttemberg, Germany

    • Author(s)

  • ML

    Miriam Lucke

    Max Planck Institute for Biology
    Tuebingen, Baden-Wurttemberg, Germany

  • DW

    Detlef Weigel

    Max Planck Institute for Biology
    Tübingen, Baden-Wurttemberg, Germany

  • RS

    Rebecca Schwab

    Max Planck Institute for Biology
    Tübingen, Baden-Wurttemberg, Germany

The Hyaloperonospora arabidopsidis–Arabidopsis thaliana (Hpa–Ath) pathosystem is a well-established model for studying plant-pathogen interactions. Studies on Hpa have identified effector genes such as ATRs, highlighting their critical roles in pathogen virulence and advancing our understanding of plant immune responses. Previous research using a small number of 'classical' Hpa isolates has revealed significant allelic diversity at some ATR effector genes. However, whether these isolates sufficiently capture the full extent of effector diversity in natural Hpa populations remains unclear. To address this, We set out to use a large global as well as an extensive local collection of Hpa to expand our view of its effector sequence space. A complementary local collection of Ath (host) lines allows us to address the variability of effector recognition at different spatial scales.