Escudo de la República de Colombia
Sistema Nacional de Biliotecas - Repositorio Institucional Universidad Nacional de Colombia Biblioteca Digital - Repositorio Institucional UN Sistema Nacional de Bibliotecas UN

IMPACT OF FOLIAR APPLICATION OF ASCORBIC ACID AND α-TOCOPHEROL ON ANTIOXIDANT ACTIVITY AND SOME BIOCHEMICAL ASPECTS OF FLAX CULTIVARS UNDER SALINITY STRESS

El-Bassiouny, Hala M.S. and Sadak, Mervat Sh. (2015) IMPACT OF FOLIAR APPLICATION OF ASCORBIC ACID AND α-TOCOPHEROL ON ANTIOXIDANT ACTIVITY AND SOME BIOCHEMICAL ASPECTS OF FLAX CULTIVARS UNDER SALINITY STRESS. Acta Biológica Colombiana, 20 (2). ISSN 1900-1649

Texto completo

[img]
Vista previa
PDF - Versión Publicada
Available under License Creative Commons Attribution.

417kB

URL oficial: https://revistas.unal.edu.co/index.php/actabiol/ar...

Resumen

ABSTRACTThe interactive effects of saline water (2000, 4000 and 6000 mg/l) and foliar application of 400 mg/l of ascorbic acid (Asc) or α – tocopherol (α-Toco) on three flax cultivars (Sakha 3, Giza 8 and Ariane) were conducted during two successive seasons (2011 and 2012). The results showed that, total soluble carbohydrates, free amino acids, proline contents were significantly increased with increasing salinity levels in all three tested cultivars except free amino acid content of Giza 8 which showed a non significant decrease. While, nucleic acids (DNA and RNA) showed significant decreases compared with the corresponding controls. Moreover, applications of vitamins (Asc or α-Toco) as foliar spraying increased all mentioned contents compared to the corresponding salinity levels. On the other hand, lipid peroxidation, and activity levels of polyphenol oxidase (PPO), peroxidase (POX) and catalase (CAT) enzymes showed progressive significant increases with increasing salinity levels of all tested three cultivars, while the behaviour of superoxide dismutase (SOD) activity showed an opposite response as compared with the control in Sakha 3 and Giza 8. Treatments with Asc or α-Toco induced significant reduction in lipid peroxidation and activities of PPO and POX of all three tested cultivars. Meanwhile, SOD increased in all three cultivars, and CAT activities increased only in Sakha 3 cultivar under salt stress as compared with reference controls. Some modifications are observed in protein patterns hence some proteins were disappeared, while certain other proteins were selectively increased and synthesis of a new set of proteins were induced, some of these responses were observed under treatments and salinity, while others were induced by either treatments or salinity.

Tipo de documento:Artículo - Article
Palabras clave:Antioxidant enzymes, Flax, Lipid peroxidation, Protein profile, salinity, α-Toco.
Temática:5 Ciencias naturales y matemáticas / Science > 57 Ciencias de la vida; Biología / Life sciences; biology
Unidad administrativa:Revistas electrónicas UN > Acta Biológica Colombiana
Código ID:60082
Enviado por : Dirección Nacional de Bibliotecas STECNICO
Enviado el día :28 Noviembre 2017 14:52
Ultima modificación:28 Noviembre 2017 14:52
Ultima modificación:28 Noviembre 2017 14:52
Exportar:Clic aquí
Estadísticas:Clic aquí
Compartir:

Solamente administradores del repositorio: página de control del ítem

Vicerrectoría de Investigación: Número uno en investigación
Indexado por:
Indexado por Scholar Google WorldCat DRIVER Registry of Open Access Repositories OpenDOAR Metabiblioteca BDCOL OAIster Red de repositorios latinoamericanos DSpace BASE Open archives La referencia Colombiae Open Access Theses and Dissertations Tesis latinoamericanas CLACSO
Este sitio web se ve mejor en Firefox