Synthesis of long-chain polyunsaturated fatty acids by recombinant cells

An Arabidopsis thaliana or Glycine max plant cell comprising

• docosapentaenoic acid and docosahexaenoic acid in an esterified form as part of triacylglycerols in the plant cell;
• a polynucleotide which encodes a Δ5 elongase operably linked to a promoter which directs expression of the polynucleotide in the plant cell;
• a polynucleotide which encodes a Δ4 desaturase operably linked to a promoter which directs expression of the polynucleotide in the plant cell;
• a desaturase which desaturates an acyl-CoA substrate in the plant cell;
• and
• a total fatty acid content in the plant cell which includes 2.5% (w/w) C20 ω3 long-chain polyunsaturated fatty acids (LC-PUFAs) and 0.1% (w/w) docosapentaenoic acid.