Salazar DK, Tzvetanka DD

Idioma: Español
Referencias bibliográficas: 44
Paginas: 100-110
Archivo PDF: 484.26 Kb.

RESUMEN

La señalización por la vía de Target Of Rapamycin (TOR) es esencial en la integración de estímulos ambientales, disponibilidad de nutrientes y energía con el control por factores de crecimiento, señales de desarrollo y diferenciación en organismos eucariontes. En las plantas, su descubrimiento y caracterización son más recientes y se ha estudiado poco en especies relevantes agronómicamente. Específicamente, se describió una vía similar a la del complejo TORC1 de mamíferos pero con particularidades del linaje vegetal que involucran la respuesta a fitohormonas y a la luz, la adaptación a estrés y el control del ciclo de vida de la planta. TOR tiene un gran impacto en el perfil metabólico, la proliferación/diferenciación celular y la regulación de la expresión genética en respuesta a glucosa, auxinas y estrés. Aquí se describen los componentes principales de la vía TOR en la planta modelo Arabidopsis, la señalización río arriba de TOR, los procesos que regula y algunos de los hallazgos que la presentan como un blanco atractivo para el mejoramiento de cultivos.

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