Abstract: The present invention relates to a process for the production of polyunsaturated fatty acids in an organism by introducing, into the organism, nucleic acids which encode polypeptides with ?5-elongase activity. Advantageously, these nucleic acids can be expressed in the organism together with further nucleic acids which encode polypeptides of the biosynthesis of the fatty acid or lipid metabolism. Especially advantageous are nucleic acids which encode ?6-desaturases, ?5-desaturases, ?4-desaturases and/or ?6-elongases. These desaturases and elongases are advantageously derived from Thalassiosira, Euglena or Ostreococcus. The invention furthermore relates to a process for the production of oils and/or triacylglycerides with an elevated content of long-chain polyunsaturated fatty acids, and oils and/or triacylglycerides thus obtained.

Abstract: The invention relates to a method for the production of multiply-unsaturated fatty acids in an organism, into which nucleic acids have been introduced, which code for polypeptides with ?-5 elongase activity. Said nucleic acid sequences, optionally with further nucleic acid sequences, coding for polypeptides for the biosynthesis of fatty acids and lipid metabolism, are advantageously expressed in the organism. Nucleic acid sequences coding for a ?-6 desaturase, a ?-5 desaturase, ?-4 desaturase and/or ?-6 elongase activity are particularly advantageous and, advantageously, said saturases and elongases are derived from Thalassiosira, Euglena or Ostreococcus. The invention further relates to a method for the production of oils and/or triacylglycerides with an increased content of long-chain, multiply-unsaturated fatty acids.

Abstract: The invention relates to a method for producing polyunsaturated fatty acids in an organism, according to which nucleic acids coding for polypeptides with an acyl-CoA:lysophospholipid-acyltransferase activity are introduced into the organism. Advantageously, the nucleic acid sequences can be expressed in the transgenic organism optionally together with other nucleic acid sequences coding for polypeptides of the fatty acid or lipid metabolism. The invention also relates to the inventive nucleic acid sequences, nucleic acid constructs containing the inventive nucleic acid sequences, vectors containing the inventive nucleic acid sequences and/or the nucleic acid constructs, and transgenic organisms containing the nucleic acid sequences, nucleic acid constructs and/or vectors. The invention further relates to oils, lipids and/or fatty acids produced according to the inventive method, and to the use of the same.

Abstract: The invention relates to a method for producing polyunsaturated fatty acids in an organism, according to which nucleic acids coding for polypeptides with an acyl-CoA:lysophospholipid-acyltransferase activity am introduced into the organism. Advantageously, said nucleic acid sequences can be expressed in the transgenic organism optionally together with other nucleic acid sequences coding for polypeptides of the fatty acid or lipid metabolism. The invention also relates to the inventive nucleic acid sequences, nucleic acid constructs containing the inventive nucleic acid sequences, vectors containing the inventive nucleic acid sequences and/or the nucleic acid constructs, and transgenic organisms containing said nucleic acid sequences, nucleic acid constructs and/or vectors. The invention further relates to oils, lipids and/or fatty acids produced according to the inventive method, and to the use of the same.

Abstract: The invention relates to a method for the production of multiply-unsaturated fatty acids in an organism, into which nucleic acids have been introduced, which code for polypeptides with ?-5 elongase activity. Said nucleic acid sequences, optionally with further nucleic acid sequences, coding for polypeptides for the biosynthesis of fatty acids and lipid metabolism, are advantageously expressed in the organism. Nucleic acid sequences coding for a ?-6 desaturase, a ?-5 desaturase, ?-4 desaturase and/or ?-6 elongase activity are particularly advantageous and, advantageously, said saturases and elongases are derived from Thalassiosira, Euglena or Ostreococcus. The invention further relates to a method for the production of oils and/or triacylglycerides with an increased content of long-chain, multiply-unsaturated fatty acids.