Abstract: DNA sequences comprising, as coding region, all or part of the nucleotide sequence coding for an mRNA coding for a cinnamoyl CoA reductase (CCR), or all or part of the complementary nucleotide sequence thereof and coding for an anti-sense mRNA capable of hybridizing with the above-mentioned mRNA. The invention also concerns the use of said sequences for carrying out methods of regulation of plant lignin biosynthesis.

Abstract: A process for producing fatty acids or fatty acid derivatives from oleaginous plants. This process is characterized in that transgenic oleaginous plants are produced having on the one hand at least one gene coding for a lipase enzyme, the so-called lipase gene, and on the other hand, associated with this lipase gene, a promoter permitting an expression of the gene either in compartments different from the lipid accumulation compartments, or by exogenous induction. The seeds or fruits containing the plant lipids are collected, the seeds or fruits are crushed, if necessary after induction treatment, so as to bring the lipids and lipase into contact, the whole mixture is incubated in order to effect an enzymatic hydrolysis of the lipids, and the fatty acids or derivatives thereof are extracted.