Abstract: The first object of the invention is directed to a genetic engineering process of plant comprising bast fibres, comprising the steps of (a) identification of the bast fibre promoter; and (b) amplification of the bast fibre promoter. The genetic engineering process of plant is remarkable in that it further comprises the step of preparing an expression cassette by fusing the bast fibre promoter with at least one gene coding for a first protein through a protein domain, the protein of the protein domain being a second protein different from the first protein.

Abstract: A genetic engineering process of fibrous plant comprising bast fibres. The process comprises the steps of (a) identification of the bast fibre promoter and (b) amplification of the bast fibre promoter. The process is remarkable in that it further comprises the step (c) of preparing a gene cassette by fusing the bast fibre promoter with at least one gene coding for a surface-active protein. Additionally, the fibrous plant obtained by the genetic engineering process. The fibrous plant is remarkable in that it comprises surface-active proteins.

Abstract: Methods and means are provided for the modification of the reactivity of plant secondary cell walls, particularly in cotton cell walls found in cotton fibers. This can be conveniently achieved by expressing a chimeric gene encoding a Saprolegnia monoica chitin synthase in cotton plants.

Abstract: Methods and means are provided for the modification of the reactivity of plant secondary cell walls, particularly in cotton cell walls found in cotton fibers. This can be conveniently achieved by expressing a chimeric gene encoding a Saprolegnia monoica chitin synthase in cotton plants.