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Poster

Session: Session 1 Presenting Authors at Posters (Odds)

P-103 - Zinc-mediated immunity in plants: linking metal homeostasis to pattern-triggered defense

Monday, July 14, 2025
13:30 - 15:15  
Location: Confex Hall 3
Extracellular & Intracellular non-self recognition & signaling

    Author(s)

  • VE

    Viviana Escudero

    CBGP (UPM-INIA/CSIC)
    Madrid, Madrid, Spain

  • CH

    Cuong Hoang, PhD

    CBGP (UPM-INIA/CSIC)
    Riverside, California, United States

  • AG

    Antoni García-Molina

    Centre for Research in Agricultural Genomics (CRAG)
    Barcelona, Catalonia, Spain

  • AD

    Aishee De

    CBGP (UPM-INIA/CSIC)
    Pozuelo de Alarcón, Madrid, Spain

  • AA

    Alejandro Manuel Armas

    CBGP (UPM-INIA/CSIC)
    Madrid, Madrid, Spain

  • MD

    Maria Doppler

    Core Facility Bioactive Molecules: Screening and Analysis, BOKU University
    Tulln, Wien, Austria

  • AV

    Antony Van der Ent

    Laboratory of Genetics, Wageningen University and Research
    Wageningen, Gelderland, Netherlands

  • RS

    Rainer Schuhmacher

    Institute of Bioanalytics and Agro-Metabolomics, BOKU University
    Tulln, Wien, Austria

  • MG

    Manuel González-Guerrero

    CBGP (UPM-INIA/CSIC) Departamento de Biotecnología-Biología Vegetal, Escuela Técnica Superior de Ingeniería Agronómica, Alimentaria y de Biosistemas
    Madrid, Madrid, Spain

    • Presenting Author(s)

  • LJ

    Lucia Jorda, PhD (she/her/hers)

    Associate Professor
    Centro de Biotecnología y Genómica de Plantas (CBGP), Centro Severo Ochoa, Universidad Politécnica de Madrid (UPM) – Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA/CSIC)
    Pozuelo de Alarcon, Madrid, Spain

While zinc is an essential nutrient for living organisms at low concentrations, slightly higher levels become toxic to plants. Recent evidence shows that plants take advantage of this toxicity by locally increasing zinc levels to fend-off invading microbes. Zn2+-transporting ATPases HMA2 and HMA4 are responsible for zinc-mediated immunity (ZiMI) in Arabidopsis thaliana leaves inoculated with the necrotrophic fungus Plectosphaerella cucumerina BMM (PcBMM). As a result, double mutant hma2hma4 fails to accumulate zinc at pathogen entry points and becomes more susceptible to infection. ZiMI is triggered by certain molecular patterns, such as fungus-derived chitohexaose (CHI6), and damage-associated molecular patterns (DAMPs) cellotriose (CEL3) and β-D-cellobiosyl-(1,3)-β-D-glucose (MLG43). This response is connected to some of the major hormone-mediated defense pathways—salicylic acid, ethylene, and jasmonic acid, as well as to significant changes in metabolic and genetic modules, as revealed by metabolomics and RNAseq analyses.