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Un gen de nuevo origen impulsa la diversificación del olor a rosa

Yajun Li¹, Runhui Li¹, Junzhong Shang¹

¹National Key Laboratory for Germplasm Innovation & Utilization of Horticultural Crops, Huazhong Agricultural University, Wuhan 430070, China; Institute of Flowers Research, Huazhong Agricultural University, Wuhan 430070, China.

|September 3, 2025

Resumen

Los investigadores descubrieron un nuevo gen, el SCREP, en las rosas que influye en el olor. Este gen

Área de la Ciencia:

Biología evolutiva
La genómica
Biología molecular

Sus antecedentes:

Comprender la evolución genética y su papel en la diversidad fenotípica es crucial.
El origen y la regulación de nuevos genes siguen siendo áreas clave de investigación.

Objetivo del estudio:

Investigar el origen de novo de los genes restringidos por taxón en las rosas.
Elucidar los mecanismos que impulsan la expresión génica y la diversificación fenotípica.

Principales métodos:

Se han generado conjuntos de genomas a nivel cromosómico para las subespecies de Rosa banksiae.
Realizó análisis genómicos de más de 100 accesos de rosas.
Se han realizado análisis transcriptómicos, metabolómicos y funcionales.

Principales resultados:

Identificó el origen de novo del gen SCREP restringido por taxón en el linaje de la rosa.
Se demostró que un elemento transponible de repetición invertida en miniatura (MITE) mejoraba la expresión de SCREP.
Se ha demostrado que el SCREP orquesta la biosíntesis del eugenol, contribuyendo a la variación del olor a rosa.

Conclusiones:

Los elementos transponibles juegan un papel importante en la expresión y evolución de genes nuevos.
La dinámica evolutiva de SCREP explica la variación del olor en las rosas.
Proporciona información sobre el origen genético de novo y la diversificación fenotípica.

Palabras clave:

Origen de nuevo Diversificación fenotípica El aroma de las rosas Gen restringido por taxón Elementos transponibles

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