isolated nucleic acid, expression cassette, expression vector, cell, transgenic plant, progeny and plant seed, and processes to produce a plant with increased levels of a product of a gene from the synthesis of fatty acids or lipid metabolism, a plant with increased levels of gamma linolenic acid (gla), to induce the production of at least one gamma linolenic acid (gla) or octadecatetraeÈnico acid (ota) in a deficient plant or lacking in gla, to decrease the production of a gene for the synthesis of fatty acids or lipid metabolism in a plant and for the co-suppression of a native gene for the synthesis of fatty acid or lipid metabolism in a plant