Genome-wide investigation into roles of Arabidosis receptor-like proteins in pathogen defense

U. Ellendorff

Research output: Thesisinternal PhD, WU

Abstract

Receptor-like proteins (RLPs) are receptors on the surface of plant cells that are important for the activation of disease resistance. Furthermore, some RLPs are important for plant development. The Arabidopsis genome contains 57 genes encoding RLPs. A genome wide collection of RLP gene knock-out mutants was assembled and functionally analyzed for defects in defense and development. This resulted in the identification of an RLP that plays a role in hormone perception, and two RLPs that play a role in non-host resistance, the phenomenon that a plant species is typically resistant to pathogens of other plant species.
RNA silencing is a regulatory mechanism by which the expression of genes is downregulated or entirely suppressed. In this thesis, it is demonstrated for the first time that this mechanism is important for defense of Arabidopsis against a fungal pathogen; the vascular wilt fungus Verticillium. This is an extremely important pathogen of over 200 plant species including economically important crops.

Original languageEnglish
QualificationDoctor of Philosophy
Awarding Institution
  • Wageningen University
Supervisors/Advisors
  • de Wit, Pierre, Promotor
  • Thomma, Bart, Co-promotor
Award date11 Mar 2009
Place of Publication[S.l.
Print ISBNs9789085853206
Publication statusPublished - 2009

Keywords

  • plants
  • arabidopsis thaliana
  • defence mechanisms
  • plant pathogens
  • plant proteins
  • pathogenesis-related proteins
  • genome analysis
  • mutants
  • gene expression
  • plant-microbe interactions
  • gene silencing

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