Lignins are complex polymers responsible for cell wall properties important in plant development.
However, they are detrimental for the pulp and paper industry and reduce digestibility of forage in animal feeding. Poplar is considered to be a model tree for forest tree biotechnology. With the aim of obtaining transgenic poplar trees better adapted to paper manufacture, the activities of two enzymes involved in the biosynthesis of lignin monomers were modified. The lignin biosynthesis pathway has not been totally elucidated so far. Our aim is to use Arabidopsis thaliana as a model plant to study lignification as an alternative to woody species.