Observatorio de I+D+i UPM

Memorias de investigación
Communications at congresses:
SIGNWALLING: SIGNALS DERIVED FROM ARABIDOPSIS CELL WALL ACTIVATE SPECIFIC RESISTANCE TO PATHOGENS
Year:2014
Research Areas
  • Molecular, cellular and genetic biology
Information
Abstract
The cell wall is a dynamic structure that regulates both constitutive and inducible plant defence responses. Different molecules o DAMPs (damage-associated molecular patterns) can be released from plant cell walls upon pathogen infection or wounding and can trigger immune responses. To further characterize the function of cell wall on the regulation of these immune responses, we have performed a biased resistance screening of putative/well-characterized primary/secondary Arabidopsis thaliana cell wall mutants (cwm). In this screening we have identified more than 20 cwm mutants with altered susceptibility/resistance to at least one of the following pathogens: the necrotrophic fungi Plectosphaerella cucumerina, the vascular bacterium Ralstonia solanacearum, the biotrophic oomycete Hyaloperonospora arabidopsidis and the powdery mildew fungus Erisyphe cruciferarum. We found that cell wall extracts from some of these cwm plants contain novel DAMPs that activate immune responses and conferred enhanced resistance to particular pathogens when they were applied to wild-type plants. Using glycomic profiling we have performed an initial characterization of the active carbohydrate structures present in these cwm wall fractions, and we have determined the signalling pathways regulated by thesse fractions. . The data generated with this collection of wall mutants support the existence of specific correlations between cell wall structure/composition, resistance to particular type of pathogens and plant fitness. Remarkably, we have identified specific cwm mutations that uncoupled resistance to pathogens from plant trade-offs, further indicating the plasticity of wall structures in the regulation of plant immune responses.
International
Si
Congress
XVI International Congress on Molecular Plant-Microbe Interaction
960
Place
Rodas (Grecia)
Reviewers
Si
ISBN/ISSN
0000-0000
Start Date
06/07/2014
End Date
13/07/2014
From page
49
To page
49
Libro de Resúmenes
Participants
  • Autor: Antonio Molina Fernandez (UPM)
  • Autor: Marie Pierre Riviere
  • Autor: Andrea Sánchez Vallet (UPM)
  • Autor: Sara Sopeña Torres (UPM)
  • Autor: Clara Sánchez Rodríguez (UPM)
  • Autor: Tinguaro Rodriguez
  • Autor: Freddy Boutrot
  • Autor: Nicolas Denance
  • Autor: Philippe Ranocha
  • Autor: Xavier Bartel
  • Autor: Yves Marco
  • Autor: Debora Goffner
  • Autor: Cyril Zipfel
  • Autor: Michael Hahn
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Interacciones Moleculares Planta-Patógeno
  • Centro o Instituto I+D+i: Centro de Biotecnología y Genómica de Plantas, CBGP
  • Departamento: Biotecnología - Biología Vegetal
S2i 2020 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
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