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El complejo parecido a PuRBOHF-PuPRX42 activa la biosíntesis de lignina para la formación de células de piedra en las

He Zhang¹, Xuefeng Zhang², Mingyang Xu²

¹College of Plant Protection, Shenyang Agricultural University, Shenyang, China.

Plant science : an international journal of experimental plant biology

|September 5, 2025

Resumen

La calidad de las peras depende de la lignina en las células de piedra. Este estudio revela que PuRBOHF y PuPRX42-como interactúan para impulsar la lignina y la formación de células de piedra, aclarando un mecanismo clave.

Área de la Ciencia:

Biología vegetal
Investigación sobre la calidad de las frutas
La bioquímica

Sus antecedentes:

La deposición de lignina en las células de piedra tiene un impacto significativo en la calidad de las peras.
La NADPH oxidasa (RBOH) genera especies reactivas de oxígeno (ROS), que regulan los procesos fisiológicos de las plantas.
La regulación genética de RBOH en la biosíntesis de lignina de las células de piedra no se comprende bien.

Objetivo del estudio:

Elucidar los mecanismos moleculares de la biosíntesis de lignina regulada por RBOH durante la formación de células de piedra en la pera.
Investigar el papel de PuPRX42-like y PuRBOHF en el desarrollo de células de piedra.

Principales métodos:

Análisis de la expresión génica de PuPRX42-like y PuRBOHF en los tejidos de las peras.
Cuantificación del contenido de células de piedra.
Investigación de las interacciones proteína-proteína entre PuRBOHF y PuPRX42-like.

Principales resultados:

El contenido de células de piedra aumentó con la expresión similar a PuPRX42.
La expresión específica de PuRBOHF fue mayor en las células de piedra, correlacionándose con el aumento de la producción de ROS y la biosíntesis de lignina.
Se identificó un complejo similar a PuRBOHF-PuPRX42, que promueve la biosíntesis de lignina y la formación de células de piedra.

Conclusiones:

PuRBOHF actúa como un regulador positivo en el desarrollo de células de piedra.
La interacción entre PuRBOHF y PuPRX42-like es crucial para promover la biosíntesis de lignina y la formación de células de piedra en la pera.
Este estudio aclara las vías moleculares que rigen la deposición de lignina en las células de la piedra de pera.

Palabras clave:

PuRBOHF-PuPRX42-como La lignina Las peras célula de piedra

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