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Revista Chapingo serie ciencias forestales y del ambiente
versión On-line ISSN 2007-4018versión impresa ISSN 2007-3828
Rev. Chapingo ser. cienc. for. ambient vol.13 no.2 Chapingo jul./dic. 2007
Artículos
RESISTENCIA SISTÉMICA ADQUIRIDA EN PLANTAS: ESTADO ACTUAL
SYSTEMICACQUIRED RESISTANCE IN PLANT: STATE OF ART
1FES-IZTACALA-UNAM, Unidad de Morfología y Función. Avenida de los Barrios Núm. 1, Los Reyes Iztacala, Tlalnepantla, Estado de México. México C. P. 54090. Correo e: datura@servidor.unam.mx
Las plantas hospederas pueden protegerse contra el ataque de patógenos si han sobrevivido a una infección inicial por virus, bacterias u hongos patogénicos. Se piensa que la primer infección, o algún daño, “inmuniza” a la planta contra infecciones posteriores por patógenos homólogos. La primera expresión de resistencia “inducida” por el patógeno es la reacción contra subsecuentes infecciones de patógenos, independientemente si son virus, bacterias u hongos. Esta respuesta es llamada resistencia sistémica adquirida. La resistencia sistémica adquirida se refiere a distintas vías de transducción de señales que juegan un rol importante en la habilidad de la planta para defenderse contra los patógenos.
PALABRAS CLAVE: respuesta hipersensitiva; ácido salicílico; especies reactivas de oxígeno; resistencia inducida
Host plant can be protected against further pathogen attack if they have survived earlier infection by pathogenic viruses, bacteria or fungi. It appears that the first infecting pathogen, or some an injury, “immunizes” the plant against further infections by homologous pathogens. The first infecting pathogen “induced” expression of resistance reactions against subsequently infecting pathogens, regardless of whether they are viruses, bacteria or fungi. This response is called systemic acquired resistance. Systemic acquired resistance refers to distinct signal transduction pathway that plays an important role in the ability of plants to defend them selves against pathogen.
KEY WORDS: hypersensitive response; salicylic acid; reactive oxygen species; induced resistance
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Recibido: 08 de Febrero de 2006; Aprobado: 30 de Enero de 2007
Este es un artículo publicado en acceso abierto bajo una licencia Creative Commons
