The rice leaf blast pathogen undergoes developmental processes typical of root-infecting fungi.
Nature
; 431(7008): 582-6, 2004 Sep 30.
Article
en En
| MEDLINE
| ID: mdl-15457264
ABSTRACT
Pathogens have evolved different strategies to overcome the various barriers that they encounter during infection of their hosts. The rice blast fungus Magnaporthe grisea causes one of the most damaging diseases of cultivated rice and has emerged as a paradigm system for investigation of foliar pathogenicity. This fungus undergoes a series of well-defined developmental steps during leaf infection, including the formation of elaborate penetration structures (appressoria). This process has been studied in great detail, and over thirty M. grisea genes that condition leaf infection have been identified. Here we show a new facet of the M. grisea life cycle this fungus can undergo a different (and previously uncharacterized) set of programmed developmental events that are typical of root-infecting pathogens. We also show that root colonization can lead to systemic invasion and the development of classical disease symptoms on the aerial parts of the plant. Gene-for-gene type specific disease resistance that is effective against rice blast in leaves also operates in roots. These findings have significant implications for fungal development, epidemiology, plant breeding and disease control.
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Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Enfermedades de las Plantas
/
Oryza
/
Raíces de Plantas
/
Hojas de la Planta
/
Magnaporthe
Tipo de estudio:
Prognostic_studies
Idioma:
En
Revista:
Nature
Año:
2004
Tipo del documento:
Article
País de afiliación:
Reino Unido