The present invention relates to a process for the production of
long-chain polyunsaturated fatty acids in an organism by introducing,
into the organism, nucleic acids which code for polypeptides with acyl
transferase activity. These nucleic acid sequences, if appropriate
together with further nucleic acid sequences which code for polypeptides
of the fatty acid or lipid metabolism biosynthesis, can advantageously be
expressed in the organism. Furthermore, the invention relates to a method
for the production of oils and/or triacylglycerides with an elevated
content of long-chain polyunsaturated fatty acids. The invention
furthermore relates to the nucleic acid sequences, nucleic acid
constructs, vectors and organisms comprising the nucleic acid sequences
according to the invention, vectors comprising the nucleic acid sequences
and/or the nucleic acid constructs and to transgenic organisms comprising
the abovementioned nucleic acid sequences, nucleic acid constructs and/or
vectors. A further part of the invention relates to oils, lipids and/or
fatty acids produced by the process according to the invention and to
their use.