English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/166887
Compartir / Impacto:
Estadísticas
Add this article to your Mendeley library MendeleyBASE
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Título

Modification of fatty acid in rapeseed oil (Brassica napus) by an antisense methodologie

AutorCartea González, María Elena ; Migdal, M.; Pelletier, G.; Renard, M.; Deschamps, M.; Guerche, P.
Fecha de publicaciónabr-1998
EditorCSIC - Misión Biológica de Galicia (MBG)
Fundación Pedro Barrié de la Maza, Conde de Fenosa
CitaciónInternational Symposium on Breeding of Protein and Oil Crops: 101-102 (1998)
ResumenOil seed rape (Brassica napus) is the most productive oil seed crop grown in temperate climates. Regarding the oil quality of rapeseed, improvement has been achieved in the last years. However, the nutritional quality and uses can still be improved by increasing the levels of the oleic acid (C18:1) and decreasing the levels of dietary essential a-linolenic acid (C18:3) for industrial applications and human consumption. High concentrations of this latter fatty acid promote oxidation process which negatively affect the shelf life of oil. Improvement of the C18 fatty acid composition was achieved in the past by inducing high linoleic/Iow a-linolenic acid genotypes via chemical mutagenesis and selection. At present, the isolation of genes involved in lipid metabolism and the development of molecular techniques offer new possibilities to obtain transgenic plants in which target desaturases genes are overexpressed or suppressed. One possible biotechnological approach is based on seed-specific expression of antisense mRNA. In the developing embryo, oleic acid desaturation and the a-linolenic acid synthesis are mainly controlled by the microsomal _12 and _15 desaturases, respectively. Our objectives were to inhibit the expression of these genes via anti-sense RNA to specifically modify the levels of oleic and a-linolenic in rapeseed oil.
Descripción2 páginas y 1 tabla.- Trabajo presentado en el Simposio inernacional organizado por la Misión Biológica de Galicia y la Asociación Europea para el Mejoramiento de las Plantas (EUCARPIA) en Pontevedra, entre el 1 y el 4 de abril de 1998.
URIhttp://hdl.handle.net/10261/166887
Aparece en las colecciones: (MBG) Comunicaciones congresos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
Cartea_Modification_fatty...pdfComunicación371,3 kBAdobe PDFVista previa
Visualizar/Abrir
Mostrar el registro completo
 


NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.