Bacterial disease resistance in Arabidopsis through flagellin perception

Cyril Zipfel, Silke Robatzek, Lionel Navarro, Edward J Oakeley, Jonathan D G Jones, Georg Felix, Thomas Boller

Research output: Contribution to journalArticlepeer-review

1319 Citations (Scopus)


Plants and animals recognize microbial invaders by detecting pathogen-associated molecular patterns (PAMPs) such as flagellin. However, the importance of flagellin perception for disease resistance has, until now, not been demonstrated. Here we show that treatment of plants with flg22, a peptide representing the elicitor-active epitope of flagellin, induces the expression of numerous defence-related genes and triggers resistance to pathogenic bacteria in wild-type plants, but not in plants carrying mutations in the flagellin receptor gene FLS2. This induced resistance seems to be independent of salicylic acid, jasmonic acid and ethylene signalling. Wild-type and fls2 mutants both display enhanced resistance when treated with crude bacterial extracts, even devoid of elicitor-active flagellin, indicating the existence of functional perception systems for PAMPs other than flagellin. Although fls2 mutant plants are as susceptible as the wild type when bacteria are infiltrated into leaves, they are more susceptible to the pathogen Pseudomonas syringae pv. tomato DC3000 when it is sprayed on the leaf surface. Thus, flagellin perception restricts bacterial invasion, probably at an early step, and contributes to the plant's disease resistance.
Original languageEnglish
Pages (from-to)764-7
Number of pages4
Issue number6984
Publication statusPublished - 15 Apr 2004


  • Arabidopsis
  • Arabidopsis Proteins
  • Cell Extracts
  • Flagellin
  • Immunity, Innate
  • Mutation
  • Plant Diseases
  • Plant Growth Regulators
  • Plants, Genetically Modified
  • Protein Kinases
  • Pseudomonas syringae
  • Signal Transduction

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