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    • 1. 发明申请
    • METHOD FOR PRODUCING POLYUNSATURATED FATTY ACIDS IN TRANSGENIC PLANTS
    • PROCESS转基因植物中多产多不饱和脂肪酸
    • WO2005083093A3
    • 2006-02-16
    • PCT/EP2005001863
    • 2005-02-23
    • BASF PLANT SCIENCE GMBHCIRPUS PETRABAUER JOERGQIU XIAOWU GUOHAIDATLA NAGAMANI
    • CIRPUS PETRABAUER JOERGQIU XIAOWU GUOHAIDATLA NAGAMANI
    • C11B1/02C12N9/02C12N9/10A01K67/027
    • C12N15/82C12N15/8247
    • The invention relates to a method for producing polyunsaturated fatty acids in seeds of transgenic plants. According to said method, nucleic acids, coding for polypeptides with a ?-3-desaturase, ?-12-desaturase, ?-6-desaturase, ?-6-elongase, ?-5-desaturase, ?-5-elongase and/or ?-4-desaturase activity, preferably for polypeptides with a ?-6-desaturase, ?-6-elongase and ?-5-desaturase activity, are introduced into the organism. The nucleic acid sequences are represented by SEQ ID NO: 11, SEQ ID NO: 27, SEQ ID NO: 193, SEQ ID NO: 197, SEQ ID NO: 199 and SEQ ID NO: 201. Advantageously, said nucleic acid sequences can be expressed in the organism optionally together with other nucleic acid sequences that code for polypeptides of the biosynthesis of the fatty acid or lipid metabolism. Nucleic acid sequences coding for a ?-6-desaturase, ?-5-desaturase, ?-4-desaturase, ?-1 2-desaturase and/or ?-6-elongase activity are especially advantageous. Advantageously, said desaturases and elongases originate from thalassiosira, euglena or ostreococcus. The invention also relates to a method for producing oils and/or triacylglycerides with an increased content of long-chain polyunsaturated fatty acids. In a preferred embodiment, the invention also relates to a method for producing arachidonic acid, eicosapentaenic acid or docosahexaenic acid, and to a method for producing triglycerides with an increased content of unsaturated fatty acids, especially arachidonic acid, eicosapentaenoic acid and/or docosahexaenoic acid, in transgenic plants, preferably in seeds of the transgenic plants. The invention further relates to the production of a transgenic plant with an increased content of polyunsaturated fatty acids, especially arachidonic acid, eicosapentaenoic acid and/or docosahexaenoic acid, based on the expression of the elongases and desaturases used in the inventive method. The invention also relates to recombinant nucleic acids molecules containing, together or individually, nucleic acid sequences coding for the polypeptides with a ?-6-desaturase, ?-6-elongase, ?-5-desaturase and ?-5-elongase activity, and transgenic plants containing said recombinant nucleic acid molecules. Another part of the invention relates to oils, lipids and/or fatty acids produced according to the inventive method, and to the use thereof. Furthermore, the invention relates to unsaturated fatty acids and triglycerides with an increased content of unsaturated fatty acids, and to the use of the same.
    • 本发明涉及一种用于生产由核酸的转基因植物的种子中的多不饱和脂肪酸的方法被引入到生物体中,其与β-3去饱和酶,?-12-去饱和酶,?-6去饱和酶编码多肽, ?-6-延伸,? -5去饱和酶,?-5-延伸酶和/或Δ4-去饱和酶优选的多肽具有?-6去饱和酶,?-6延伸酶和?-5- 脱氢酶活性。 的核酸序列示于SEQ ID NO:11,SEQ ID NO:27,SEQ ID NO:193,SEQ ID NO:197,SEQ ID NO:199和SEQ ID NO:所示第二百○一序列 有利地,这些核酸序列可以在生物体中,任选地与编码所述脂肪酸或脂质的生物合成的多肽的另外的核酸序列表达。 特别有利的是编码一个?-6去饱和酶中,α-1 2去饱和酶-6-延伸-5去饱和酶,?4去饱和酶,?和/或核酸序列? 有利的是,这些去饱和酶和延伸酶海链藻,裸藻或Ostreococcus。 此外,本发明涉及用于生产油和/或三酰基甘油酯与长链多不饱和脂肪酸的升高的内容的处理。 本发明中的优选实施例还涉及一种用于生产花生四烯酸,二十碳五烯酸或二十二碳六酸和用于生产甘油三酯的与不饱和脂肪酸含量增加的处理,特别是花生四烯酸,二十碳五烯酸和/或二十碳六烯酸的,有利的是在转基因植物中的转基因的种子 植物。 本发明涉及生产具有多不饱和脂肪酸,特别是花生四烯酸,二十碳五烯酸和/或二十碳六烯酸,含量增加的转基因植物由于延伸酶的表达和在本发明的去饱和酶处理中使用。 本发明还涉及含有核酸序列,其的重组核酸分子编码的多肽具有?-6去饱和酶,?-6-延伸,? -5去饱和酶和β-5-延伸酶,联合或单独,以及 含有上述的重组核酸分子的转基因植物。 本发明的另一部分涉及通过本发明和它们的使用过程中产生的油,脂质和/或脂肪酸。 本发明还涉及到的不饱和脂肪酸和甘油三酯具有不饱和脂肪酸的含量增加及其用途。