Abstract
Erucic acid (C22:1), the major component of traditional rapeseed (Brassica napus L.) triacylglycerols (TAG), is detrimental to the food quality of the oil. Progress in rapeseed breeding has led to the development of double-low rapeseed (Canola) cultivars. Conversely, for industrial purpose the C22:1 content of rapeseed oil should be as high as possible. Molecular biologists have demonstrated that the development of high-erucic acid rapeseed (HEAR) genotypes containing considerable amounts of erucic acid in the sn-2 position of the TAG, is an elementary step in order to increase the C22:1 content of rapeseed oil. Furthermore, transgenic HEAR bearing trierucin in its seed oil needs improvement by stimulating the biosynthetic capacity for fatty acid elongation. With regard to the molecular basis of C22:1 inheritance it is supposed that true erucic acid alleles are expressing different isoforms of the elongase condensing enzyme (β-ketoacyl-CoA synthase). In this concern, further work aims in the identification, molecular characterization and accumulation of more effective alleles for C22:l synthesis in B. napus, involving transgenic HEAR lines with significant trierucin in their seed oil.
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© 1999 Springer Science+Business Media Dordrecht
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Lühs, W.W. et al. (1999). Genetic modification of erucic acid biosynthesis in Brassica napus . In: Mugnozza, G.T.S., Porceddu, E., Pagnotta, M.A. (eds) Genetics and Breeding for Crop Quality and Resistance. Developments in Plant Breeding, vol 8. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-4475-9_36
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DOI: https://doi.org/10.1007/978-94-011-4475-9_36
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