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    • 1. 发明申请
    • PROCESS FOR THE PRODUCTION OF ARACHIDONIC ACID AND/OR EICOSAPENTAENOIC ACID
    • 生产阿卡膦酸和/或异柠檬酸的方法
    • WO2007042510A2
    • 2007-04-19
    • PCT/EP2006067223
    • 2006-10-10
    • ROTHAMSTED RESNAPIER JOHNATHAN ASAYANOVA OLGA
    • NAPIER JOHNATHAN ASAYANOVA OLGA
    • C12N9/02C12N9/10C12N15/82
    • C12N15/8247C12N9/0083C12N9/1029
    • The present invention relates to a new process for the production of arachidonic acid and/or eicosapentaenoic acid in plants through the co-expression of a ?-12-/?-15- desaturase, ?-9-elongase, ?-8-desaturase and a ?-5-desaturase and a process for the production of lipids or oils having an increased content of unsaturated fatty acids, in particular ?-3 and ?-6 fatty acids having at least two double bonds and a 18 or 20 carbon atom chain length. Preferably the arachidonic acid and eicosapentaenoic acid are produced in at least a 1 :2 ratio. The invention furthermore relates to the production of a transgenic plants, preferably a transgenic crop plant, having an increased content of arachidonic acid and/or ei¬ cosapentaenoic acid, oils or lipids containing Ciß- or C20- fatty acids with a double bond in position ? 5, 8, 9, 11 , 12, 14, 15 or dffthe fatty acid produced, respectively due to the expression of the ?-12-/?-15-desaturase, of the ?-9-elongase, of the ?-8- desaturase and of the ?-5-desaturase in the plant. The expression of the inventive ?- 12-/?-15-desaturase leads preferably to linoleic acid and linolenic acid as products having a double bond in the position ? 9, 12 and 15 of the fatty acid. The invention additionally relates to specific nucleic acid sequences encoding for pro¬ teins with ?-12-/?-15-desaturase-, ?-9-elongase-, ?-8-desaturase- or ?-5-desaturase- activity, nucleic acid constructs, vectors and transgenic plants containing said nucleic acid sequences.
    • 本发明涉及通过共同表达α-12 /β-15-去饱和酶,α-9-延长酶,α-8-去饱和酶,在植物中生产花生四烯酸和/或二十碳五烯酸的新方法 和α-5-去饱和酶的制备方法和具有增加的不饱和脂肪酸含量的脂质或油的方法,特别是具有至少两个双键和18或20个碳原子的α-3和β-6脂肪酸 链长。 优选花生四烯酸和二十碳五烯酸以至少1:2的比例制备。 本发明还涉及生产具有增加的花生四烯酸和/或二十碳五烯酸含量的转基因植物,含有具有双键位置的C 1 -C 20或C 20 - 脂肪酸的油或脂质的转基因植物 ? 5,8,9,11,12,14,15,或分别由α-12- /β-15-去饱和酶表达β-9-延伸酶而产生的α- - 去饱和酶和植物中的α-5-去饱和酶。 本发明的β-12- /β-15-去饱和酶的表达优选导致亚油酸和亚麻酸作为在位置β具有双键的产物。 9,12和15的脂肪酸。 本发明还涉及编码具有α-12 - /β-15-去饱和酶 - ,β-延伸酶 - ,α-8-去饱和酶或α-5-去饱和酶 - 活性的核酸的特异性核酸序列 酸构建体,载体和含有所述核酸序列的转基因植物。