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Memoria transcriptómica inducida por bioimprimación que mejora la tolerancia al cadmio en el hiperacumulador de Cd
Mirel Subašić1, Alisa Selović2, Sabina Dahija3
1Faculty of Forestry, University of Sarajevo, Zagrebačka 20, 71 000 Sarajevo, Bosnia and Herzegovina.
Plants (Basel, Switzerland)
|January 28, 2026
Resumen
La bioimprimación de semillas con Paraburkholderia phytofirmans PsJN mejora la resiliencia de las plantas a los metales pesados. Este proceso establece una memoria molecular, mejorando la tolerancia al cadmio y la adaptación al estrés en las plantas.
Área de la Ciencia:
- Ciencia vegetal
- Microbiología
- Ciencia ambiental
Sus antecedentes:
- La bioimprimación de semillas es una técnica prometedora para mejorar la tolerancia de las plantas al estrés.
- Los metales pesados, como el cadmio (Cd), representan amenazas significativas para la salud de las plantas y la productividad agrícola.
- La comprensión de los mecanismos moleculares detrás de la tolerancia al estrés inducida por la bioimprimación es crucial.
Objetivo del estudio:
- Investigar cómo la bioimprimación de semillas de Silene sendtneri con Paraburkholderia phytofirmans PsJN afecta los cambios transcripcripcionales y la tolerancia al cadmio.
- Elucidar la memoria molecular establecida por la bioimprimación.
- Evaluar el potencial de la bioimprimación para mejorar las estrategias de fitorremediación.
Principales métodos:
- RNA-secuenciación (RNA-seq) para el perfilado de la expresión génica global de semillas imprimadas y no imprimadas.
- Ensayos fisiológicos para evaluar el rendimiento de las plantas bajo estrés por cadmio.
- Análisis de la actividad antioxidante, la acumulación de osmolitos y el contenido de metales.
Principales resultados:
- La bioimprimación indujo una expresión génica diferencial en las semillas antes de la exposición al cadmio, regulando al alza los genes de desintoxicación, antioxidantes y transporte.
- Las plantas imprimadas mostraron un rendimiento fisiológico mejorado, incluida la preservación de la integridad y una mayor actividad antioxidante.
- Se observó un aumento en la captación y secuestro de cadmio en las plantas imprimadas, lo que indica una mejor tolerancia.
Conclusiones:
- La bioimprimación basada en Paraburkholderia phytofirmans PsJN establece una memoria transcriptómica estable en las semillas.
- Esta memoria molecular mejora la tolerancia al cadmio, el secuestro de metales y la resiliencia general al estrés en Silene sendtneri.
- La bioimprimación tiene potencial para mejorar el rendimiento de los hiperacumuladores en la fitorremediación y la adaptación al estrés.
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