Peroxidación lipídica, contenido en prolina libre y azúcares solubles como indicadores de tolerancia al estrés oxidativo en algunas líneas avanzadas de trigo duro (Triticum durum Desf.).

Palabras clave: daño de membrana, glifosato, especies de oxígeno reactivo, tolerancia

Resumen

El estrés oxidativo inducido por el glifosato es un fenómeno complejo causado por un desequilibrio entre las especies de oxígeno reactivo (ROS) y los antioxidantes en las células de las plantas. La presente investigación se llevó a cabo en el instituto de cultivos de campo, Estación Experimental Agrícola de Setif (ITGC-AES), para evaluar la respuesta de lineas de trigo duro (Triticum Durum Desf.) expuestas al estrés oxidativo inducido por el herbicida glifosato. En la etapa de encabezamiento, se pulverizó una solución de 5 Mm de glifosato en las hojas bandera, y cada medición se tomó 48 horas después de la aplicación del glifosado. Se determinó la peroxidación de lípidos, prolina libre y azúcares solubles. Los resultados indicaron que el estrés oxidativo aumentó el contenido de Peroxidación lipídica, prolina y azúcares solubles en las hojas bandera. El análisis de la varianza reveló diferencias significativas entre los genotipos probados, el aumento del nivel de Peroxidación lipídica es mucho mayor en las líneas avanzadas G5 y G3, en las que la peroxidación de lípidos y el daño de la membrana son mayores. Los daños oxidativos también aumentaron el contenido de prolina en las líneas G3 y G4, y azúcares solubles en la línea G5, que mostraban una alta tolerancia al estrés oxidativo inducido.

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Publicado
2023-05-23
Cómo citar
Oulmi, A., Benkadja, S., Guendouz, A., Frih, B., Mehanni, A., & Selloum, S. (2023). Peroxidación lipídica, contenido en prolina libre y azúcares solubles como indicadores de tolerancia al estrés oxidativo en algunas líneas avanzadas de trigo duro (Triticum durum Desf.). Revista De La Facultad De Agronomía De La Universidad Del Zulia, 40(2), e234018. Recuperado a partir de https://mail.produccioncientificaluz.org/index.php/agronomia/article/view/40196
Sección
Producción Vegetal