Signwalling: signals derived from arabiopsis cell wall activate specific resistance to pathogens

Molina Fernández, Antonio and Miedes Vicente, Eva and Bacete, Laura and Riviere, Marie Pierre and Sánchez Vallet, Andrea and Rodriguez, Tinguaro and Boutrot, Freddy and Denance, Nicolas and Ranocha, Philippe and Bartel, Xavier and Marco, Yves and Goffner, Debora and Zipfel, Cyril and Hahn, Michael (2014). Signwalling: signals derived from arabiopsis cell wall activate specific resistance to pathogens. In: "XVI International Congress on Molecular Plant-Microbe Interactions", 06/07/2014-10/07/2014, Rodas (Grecia).

Description

Title: Signwalling: signals derived from arabiopsis cell wall activate specific resistance to pathogens
Author/s:
  • Molina Fernández, Antonio
  • Miedes Vicente, Eva
  • Bacete, Laura
  • Riviere, Marie Pierre
  • Sánchez Vallet, Andrea
  • Rodriguez, Tinguaro
  • Boutrot, Freddy
  • Denance, Nicolas
  • Ranocha, Philippe
  • Bartel, Xavier
  • Marco, Yves
  • Goffner, Debora
  • Zipfel, Cyril
  • Hahn, Michael
Item Type: Presentation at Congress or Conference (Poster)
Event Title: XVI International Congress on Molecular Plant-Microbe Interactions
Event Dates: 06/07/2014-10/07/2014
Event Location: Rodas (Grecia)
Title of Book: XVI International Congress on Molecular Plant-Microbe Interactions
Date: 2014
Subjects:
Faculty: E.T.S.I. Agrónomos (UPM) [antigua denominación]
Department: Biotecnología - Biología Vegetal
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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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.

More information

Item ID: 36914
DC Identifier: http://oa.upm.es/36914/
OAI Identifier: oai:oa.upm.es:36914
Official URL: http://www.mpmi2014rhodes-hellas.gr/
Deposited by: Memoria Investigacion
Deposited on: 30 Jul 2015 15:09
Last Modified: 30 Jul 2015 15:09
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