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SlATG8f coordina la señalización de etileno y la rotación de cloroplastos para impulsar la maduración de los frutos

Liu Song¹, Wen Xu^2,3, Xingxue Zha^1,4

¹College of Agriculture, Guizhou University, Guiyang, 550025, China.

Plant cell reports

|August 22, 2025

Resumen

La autofagia, mediada por SlATG8f, ajusta la maduración de los frutos del tomate al interactuar con la señalización de etileno. Este proceso es crucial para el ablandamiento de la fruta, la acumulación de azúcar y la calidad general.

Área de la Ciencia:

Biología vegetal
Biología molecular
La bioquímica

Sus antecedentes:

La maduración del tomate es un proceso complejo regulado por la señalización de etileno.
El papel de la autofagia en la maduración de la fruta es en gran parte desconocido.
La autofagia es un proceso de degradación celular esencial para la homeostasis celular.

Objetivo del estudio:

Investigar el papel de la autofagia en la maduración de los tomates.
Para explorar la interacción entre la señalización de etileno y la autofagia.
Identificar a los miembros de la familia SlATG8 implicados en la maduración de las frutas.

Principales métodos:

PCR de transcripción inversa cuantitativa (qRT-PCR) para medir la expresión génica.
Ensayos de dos híbridos de levadura para identificar las interacciones de las proteínas.
Cribado de dos levaduras híbridas de ubiquitina dividida para descubrir los interactores SlATG8F.

Principales resultados:

La señalización de etileno induce la expresión del gen SlATG8, vinculando la regulación hormonal a la autofagia.
SlATG8f media la degradación de los inhibidores de la vía del etileno a través de la autofagia, promoviendo la maduración.
SlATG8f es esencial para el ablandamiento de la fruta inducido por etileno, la acumulación de azúcar y ácido, mejorando la calidad de la fruta.

Conclusiones:

La autofagia, particularmente SlATG8f, juega un papel crítico en el ajuste fino de la maduración de la fruta del tomate.
SlATG8f integra señales de desarrollo y ambientales a través de la autofagia selectiva.
SlATG8f es un objetivo molecular potencial para mejorar la calidad y la vida útil de los tomates.

Palabras clave:

La autofagia Etileno Maduración de las frutas Proteínas de interacción El tomate Híbrido de levadura dividida en ubiquitina

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