The ERECTA receptor-like kinase regulates cell wall-mediated resistance to pathogens in arabidopsis thaliana

Sánchez Rodríguez Clara, José Manuel Estévez, Francisco Llorente, Hernández Blanco Camilo, Lucía Jordá, Israel Pagán, Marta Berrocal, Yves Marco, Shauna Somerville, Antonio Molina

Resultado de la investigación: Contribución a una revistaArtículorevisión exhaustiva

69 Citas (Scopus)

Resumen

Some receptor-like kinases (RLK) control plant development while others regulate immunity. The Arabidopsis ERECTA (ER) RLK regulates both biological processes. To discover specific components of ER-mediated immunity, a genetic screen was conducted to identify suppressors of erecta (ser) susceptibility to Plectosphaerella cucumerina fungus. The ser1 and ser2 mutations restored disease resistance to this pathogen to wild-type levels in the er-1 background but failed to suppress er-associated developmental phenotypes. The deposition of callose upon P. cucumerina inoculation, which was impaired in the er-1 plants, was also restored to near wild-type levels in the ser er-1 mutants. Analyses of er cell walls revealed that total neutral sugars were reduced and uronic acids increased relative to those of wild-type walls. Interestingly, in the ser er-1 walls, neutral sugars were elevated and uronic acids were reduced relative to both er-1 and wild-type plants. The cell-wall changes found in er-1 and the ser er-1 mutants are unlikely to contribute to their developmental alterations. However, they may influence disease resistance, as a positive correlation was found between uronic acids content and resistance to P. cucumerina. We propose a specific function for ER in regulating cell wall-mediated disease resistance that is distinct from its role in development.

Idioma originalInglés
Páginas (desde-hasta)953-963
Número de páginas11
PublicaciónMolecular Plant-Microbe Interactions
Volumen22
N.º8
DOI
EstadoPublicada - ago 2009
Publicado de forma externa

Áreas temáticas de ASJC Scopus

  • Fisiología
  • Agronomía y cultivos

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