Journal article

The innate immune signaling system as a regulator of disease resistance and induced systemic resistance activity against Verticillium dahliae

  • Gkizi, Danai Laboratory of Plant Pathology, Agricultural University of Athens, Greece
  • Lehmann, Silke School of Life Sciences, University of Warwick, Gibbet Hill, United Kingdom
  • L'Haridon, Floriane Department of Biology, University of Fribourg, Switzerland
  • Serrano, Mario Centro de Ciencias Genómicas, Universidad Nacional Autónoma de México, Cuernavaca, Morelos, México
  • Paplomatas, Epaminondas J. Laboratory of Plant Pathology, Agricultural University of Athens, Greece
  • Métraux, Jean-Pierre Department of Biology, University of Fribourg, Switzerland
  • Tjamos, Sotirios E. Laboratory of Plant Pathology, Agricultural University of Athens, Greece
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    18.01.2016
Published in:
  • Molecular Plant-Microbe Interactions. - 2016, vol. 29, no. 4, p. 313–323
English In the last decades, the plant innate immune responses against pathogens have been extensively studied, while biocontrol interactions between soilborne fungal pathogens and their hosts have received much less attention. Treatment of Arabidopsis thaliana with the nonpathogenic bacterium Paenibacillus alvei K165 was shown previously to protect against Verticillium dahliae by triggering induced systemic resistance (ISR). In the present study, we evaluated the involvement of the innate immune response in the K165-mediated protection of Arabidopsis against V. dahliae. Tests with Arabidopsis mutants impaired in several regulators of the early steps of the innate immune responses, including fls2, efr-1, bak1-4, mpk3, mpk6, wrky22, and wrky29 showed that FLS2 and WRKY22 have a central role in the K165-triggered ISR, while EFR1, MPK3, and MPK6 are possible susceptibility factors for V. dahliae and bak1 shows a tolerance phenomenon. The resistance induced by strain K165 is dependent on both salicylate and jasmonate-dependent defense pathways, as evidenced by an increased transient accumulation of PR1 and PDF1.2 transcripts in the aerial parts of infected plants treated with strain K165.
Faculty
Faculté des sciences et de médecine
Department
Département de Biologie
Language
  • English
Classification
Biological sciences
License
License undefined
Identifiers
Persistent URL
https://folia.unifr.ch/unifr/documents/305940
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