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Mediation of pathogen resistance by exudation of antimicrobials from roots

Author

Listed:
  • Harsh P. Bais

    (Colorado State University)

  • Balakrishnan Prithiviraj

    (Colorado State University)

  • Ajay K. Jha

    (Colorado State University)

  • Frederick M. Ausubel

    (Massachusetts General Hospital)

  • Jorge M. Vivanco

    (Colorado State University)

Abstract

Most plant species are resistant to most potential pathogens. It is not known why most plant–microbe interactions do not lead to disease, although recent work indicates that this basic disease resistance is multi-factorial1,2. Here we show that the exudation of root-derived antimicrobial metabolites by Arabidopsis thaliana confers tissue-specific resistance to a wide range of bacterial pathogens. However, a Pseudomonas syringae strain that is both at least partly resistant to these compounds and capable of blocking their synthesis/exudation is able to infect the roots and cause disease. We also show that the ability of this P. syringae strain to block antimicrobial exudation is dependent on the type III secretory system.

Suggested Citation

  • Harsh P. Bais & Balakrishnan Prithiviraj & Ajay K. Jha & Frederick M. Ausubel & Jorge M. Vivanco, 2005. "Mediation of pathogen resistance by exudation of antimicrobials from roots," Nature, Nature, vol. 434(7030), pages 217-221, March.
    • Handle: RePEc:nat:nature:v:434:y:2005:i:7030:d:10.1038_nature03356
    DOI: 10.1038/nature03356
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    1. Tao Wen & Penghao Xie & Hongwei Liu & Ting Liu & Mengli Zhao & Shengdie Yang & Guoqing Niu & Lauren Hale & Brajesh K. Singh & George A. Kowalchuk & Qirong Shen & Jun Yuan, 2023. "Tapping the rhizosphere metabolites for the prebiotic control of soil-borne bacterial wilt disease," Nature Communications, Nature, vol. 14(1), pages 1-15, December.

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