METHOD FOR PRODUCING POLYUNSATURATED C20 AND C22 FATTY ACIDS WITH AT LEAST FOUR DOUBLE BONDS IN TRANSGENIC PLANTS

摘要

The invention relates to a method for producing polyunsaturated C20- or C22-fatty acidsin transgenic plants, whereby nucleic acids coding for polypeptides with.about.-6-desaturase,.about.-6-elongase, .about.-5-desaturase, .about.-5-elongase, .about.-4-desaturase, .about.-12-desaturase and .omega.-3-desaturase activity are introduced into the plants and wherein the nucleicacid codingfor the .about.-12-desaturase is represented by SEQ ID NO: 25 and homologsthereof.Advantageously, said desaturases and elongases come from phytophtora sojae.Theinvention also relates to nucleic acid sequences, nucleic acid constructs,vectors andorganisms containing the inventive nucleic acid sequences, vectors containingthenucleic acid sequences and/or the nucleic acid constructs, and transgenicplantscontaining the cited nucleic acid sequences, nucleic acid constructs and/orvectors. Theinvention further relates to fatty acid compositions produced according to theinventivemethod, and to the use thereof.