Explosión oxidativa en la interacción planta-patógeno

Milady Mendoza

Resumen


La producción de especies reactivas de oxígeno (ROS) por la vía de consumo de oxígeno en lo que se denomina ‘explosión oxidativa’, es un sello del reconocimiento exitoso de la infección y activación de la defensa de la planta. ROS no son solo productos tóxicos del metabolismo aeróbico, sino además, moléculas señales involucradas en varios procesos de desarrollo en todos los organismos. Estudios previos han demostrado que una explosión oxidativa frecuentemente tiene lugar en el sitio de la invasión, durante las primeras etapas de la mayoría de las interacciones planta-patógeno. Por esta razón, con vista a poder enfrentar el efecto dañino de estas moléculas, las plantas han ajustado un gran panel de mecanismos antioxidantes enzimáticos y no-enzimáticos. Aquí, se presentan algunos de los principales aspectos relacionados con el papel de ROS durante la interacción planta-patógeno.

Palabras clave: defensa de la planta, estrés biótico, mecanismos antioxidantes


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Referencias


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