European Journal of Plant Pathology

, Volume 124, Issue 2, pp 261–268 | Cite as

Induction of systemic resistance, root colonisation and biocontrol activities of the rhizospheric strain of Serratia plymuthica are dependent on N-acyl homoserine lactones

  • Yandong Pang
  • Xiaoguang Liu
  • Yingxin Ma
  • Leonid Chernin
  • Gabriele Berg
  • Kexiang Gao


Quorum sensing regulation, mediated by N-acyl homoserine lactone signals, produced by strain Serratia plymuthica HRO-C48 isolated from the rhizosphere of oilseed rape, was found to be responsible for this strain’s ability to produce the broad spectrum antibiotic pyrrolnitrin. In this study, we have shown that some other biocontrol-related traits of strain HRO-C48, such as protection of cucumbers against Pythium apahnidermatum damping-off disease, induced systemic resistance to Botrytis cinerea grey mold in bean and tomato plants, and that colonisation of the rhizosphere also depends on AHL signalling. The results prove that quorum sensing regulation may be generally involved in interactions between plant-associated bacteria, fungal pathogens and host plants.


Antifungal activity Botrytis cinerea Pythium aphanidermatum Quorum sensing 



N-acyl-homoserine lactones


induced systemic resistance


plant growth-promoting rhizobacteria


quorum sensing


volatile organic compounds


biocontrol agent


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Copyright information

© KNPV 2008

Authors and Affiliations

  • Yandong Pang
    • 1
  • Xiaoguang Liu
    • 1
  • Yingxin Ma
    • 2
  • Leonid Chernin
    • 3
  • Gabriele Berg
    • 4
  • Kexiang Gao
    • 2
  1. 1.Institute of Life SciencesJiangsu UniversityZhenjiangChina
  2. 2.Department of Plant PathologyShandong Agricultural UniversityTaianChina
  3. 3.The Otto Warburg Centre for Agriculture BiotechnologyHebrew University of JerusalemRehovotIsrael
  4. 4.Institute of Environmental BiotechnologyGraz University of TechnologyGrazAustria

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