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MdWRKY75 interactúa con MdWOX11 para modular el crecimiento de las raíces bajo estrés de sal en manzana

Xiya Zuo¹, Xiaoyun Zhang^1,2, Li Fan¹

¹College of Horticulture, Yangling Sub-Center of National Center for Apple Improvement, Northwest A&F University, Yangling, Shaanxi, 712100, China.

The Plant journal : for cell and molecular biology

|February 9, 2026

Resumen

Las plantas de manzana se adaptan al estrés salino a través de una vía de desarrollo de la raíz. El gen MdWRKY75 inhibe el crecimiento de las raíces, mientras que MdWOX11 lo promueve regulando MdSAUR15, crucial para la tolerancia a la sal.

Área de la Ciencia:

Biología Vegetal Biología Vegetal Biología Vegetal
Genética molecular La genética molecular.
Fisiología del estrés abiótico Fisiología del estrés abiótico

Sus antecedentes:

El desarrollo del sistema radicular es vital para el crecimiento de las plantas y la tolerancia al estrés.
Los mecanismos moleculares de la adaptación de la raíz de manzana al estrés salino no se comprenden bien.

Objetivo del estudio:

Identificar genes y vías clave que regulan la adaptación de la raíz de manzana al estrés por sal.
Elucidar la función de MdWRKY75 en la respuesta al estrés por sal y el desarrollo de las raíces.

Principales métodos:

Análisis de la expresión génica en manzana transgénica.
Los ensayos de un híbrido de levadura y de ChIP-qPCR para confirmar las interacciones proteína-ADN.
Los ensayos de complementación de fluorescencia bi-molecular (BiFC) para las interacciones proteína-proteína.

Principales resultados:

MdWRKY75 regula negativamente la formación accidental de raíces y la tolerancia a la sal.
MdWRKY75 reprime directamente la expresión de MdSAUR15.
MdWOX11 mejora la formación de raíces bajo estrés salino y contrarresta la represión de MdSAUR15.15 por parte de MdWRKY75

Conclusiones:

Un nuevo módulo regulador MdWOX11-MdWRKY75-MdSAUR15 controla la adaptación de la raíz de la manzana al estrés por sal.
Este módulo ofrece objetivos potenciales para mejorar la tolerancia a la sal en cultivares de manzana.

Palabras clave:

El MdWOX1111 es muy bueno.El MdWRKY7575 es el mismo.Manzana manzana manzana manzana es una manzana.Crecimiento del crecimiento de las raíces.El estrés por sal es el estrés por sal.

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