Method for the generation and cultivation of a plant cell pack

The present invention relates to the field of plant biotechnology. In particular, the present invention relates to the generation and cultivation of plant cell material in the form of a non-tissue multilayer cell pack and its use for the accumulation or harvesting of a desired product. In particular, the invention provides a method for the generation of plant cell material in the form of a medium-deprived, porous structured and non-tissue multilayer cell pack and for the subsequent maintenance of said cell pack, comprising the steps of (i) providing a cell pack by separating cells from a plant cell suspension culture, and (ii) incubating said cell pack in a non-liquid environment under a relative humidity of 50 to 100 %.