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Memorias de investigación
Ponencias en congresos:
Functional interaction between the NADPH oxidasa and heterotrimeric G proteins in the pathogen response
Año:2009
Áreas de investigación
  • Biología molecular,
  • Producción vegetal
Datos
Descripción
The Rboh genes (Respiratory burst oxidase homologs) from the plant NADPH oxidase are responsible for the production of reactive oxygen species (ROS) in response to pathogens and other responses to the environment (Torres et al., 2005). In response to ozone, there is also a production of ROS similar to the pathogen response, where the Rboh and heterotrimeric G proteins have been implicated (Joo et al., 2005) Our goal is to characterize the functional interaction between the Arabidopsis Atrboh and the heterotrimeric G proteins in the context of the pathogen response. We performed epistasis studies between the NADPH oxidase mutants atrbohD and atrbohF and mutants in the ¿ (gpa1-4) and ß (agb1-2) subunits of the heterotrimeric G proteins. We observe that agb1-2 suppresses the mutant phenotypes in the atrboh in response to bacteria and the oomycete Hyaloperonospora Arabidopsis (Torres et al., 2002). This positions the heterotrimeric G proteins downstream of the Atrboh. However, agb1-2 and the atrboh show an additive effect on susceptibility to the necrotrophic fungus Plectosphaerella cucumerina, which suggest two different pathways. There is, therefore, a complex relationship between the signaling of ROS produced by NADPH oxidase and the heterotrimeric G proteins, where the functional interaction between these regulatory systems varies depending on the context of the pathogen.
Internacional
No
Nombre congreso
XIV International Congress International Society Molecular Plant Microbe Interactions 2009.
Tipo de participación
960
Lugar del congreso
Quebec City (Canada)
Revisores
Si
ISBN o ISSN
DOI
Fecha inicio congreso
19/07/2009
Fecha fin congreso
23/07/2009
Desde la página
19
Hasta la página
19
Título de las actas
XIV International Congress International Society Molecular Plant Microbe Interactions 2009.
Esta actividad pertenece a memorias de investigación
Participantes
  • Participante: Jeffery Dangl (University of North Carolina)
  • Autor: Miguel Angel Torres Lacruz (UPM)
  • Participante: Alan Jones (University of North Carolina)
  • Autor: Clara Sánchez Rodríguez (UPM)
  • Autor: Antonio Molina Fernandez (UPM)
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: Patología Vegetal
  • Grupo de Investigación: Interacciones Moleculares Planta-Patógeno
  • Departamento: Biotecnología
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