|
Descripción
|
|
|---|---|
| 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. | |
|
Internacional
|
Si |
|
JCR del ISI
|
Si |
|
Título de la revista
|
MOLECULAR PLANT-MICROBE INTERACTIONS |
|
ISSN
|
0894-0282 |
|
Factor de impacto JCR
|
4,136 |
|
Información de impacto
|
|
|
Volumen
|
8 |
|
DOI
|
|
|
Número de revista
|
0 |
|
Desde la página
|
953 |
|
Hasta la página
|
963 |
|
Mes
|
ENERO |
|
Ranking
|
|