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Cereal Research Communications

, Volume 36, Supplement 6, pp 689–693 | Cite as

Investigating the mechanisms underpinning bacterium-mediated control of FHB disease

  • Carloalberto Petti
  • Khan Mojibur
  • Fiona Doohan
Session 7 Chemical, Cultural and Biological Control

Abstract

Pseudomonads, including P. fluorescens strain MKB 158, can inhibit the development of Fusarium seedling blight disease on wheat and barley. Application of this and other pseudomonads as head sprays inhibits the development of Fusarium head blight disease (FHB) disease on wheat and barley under both field and glasshouse conditions. P. fluorescens strains MKB 158 and MKB 249 also reduced DON contamination of grain under field conditions. Evidence suggests that P. fluorescens does not directly inhibit the growth of Fusarium, but that it potentiates host resistance against this disease. Transcriptome profiling identified barley genes differentially expressed as early events in (a) bacterium-induced resistance to seedling blight and (b) heads following P. fluorescens and Fusarium culmorum co-inoculation. Bacterium-potentiated resistance to Fusarium affects the transcription of many genes that are involved in diverse processes, including cell rescue and defence, metabolism, cell cycle and DNA replication and signalling.

Keywords

biocontrol pseudomonade transcriptome profiling 

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Copyright information

© Akadémiai Kiadó, Budapest 2008

This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

Authors and Affiliations

  • Carloalberto Petti
    • 1
  • Khan Mojibur
    • 1
  • Fiona Doohan
    • 1
  1. 1.Molecular Plant-Microbe Interactions Group, School of Biology and Environmental Science, College of Life Sciences BelfieldUniversity College DublinDublin 4Ireland

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