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

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 y Hahn, Michael (2014). Signwalling: signals derived from arabiopsis cell wall activate specific resistance to pathogens. En: "XVI International Congress on Molecular Plant-Microbe Interactions", 06/07/2014-10/07/2014, Rodas (Grecia).

Descripción

Título: Signwalling: signals derived from arabiopsis cell wall activate specific resistance to pathogens
Autor/es:
  • 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
Tipo de Documento: Ponencia en Congreso o Jornada (Póster)
Título del Evento: XVI International Congress on Molecular Plant-Microbe Interactions
Fechas del Evento: 06/07/2014-10/07/2014
Lugar del Evento: Rodas (Grecia)
Título del Libro: XVI International Congress on Molecular Plant-Microbe Interactions
Fecha: 2014
Materias:
Escuela: E.T.S.I. Agrónomos (UPM) [antigua denominación]
Departamento: Biotecnología - Biología Vegetal
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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URL Oficial: http://www.mpmi2014rhodes-hellas.gr/

Resumen

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.

Más información

ID de Registro: 36914
Identificador DC: http://oa.upm.es/36914/
Identificador OAI: oai:oa.upm.es:36914
Depositado por: Memoria Investigacion
Depositado el: 30 Jul 2015 15:09
Ultima Modificación: 30 Jul 2015 15:09
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