Abstract: A recombinant protein for use in a liquid culture medium for photo-autotrophic micropropagation of Cannabis sativa L. is disclosed. The recombinant protein comprises a fusion of a growth induction part and a uptake enhancement part. The growth induction part comprises an Arabinogalactan protein and/or a plant transcription factor associated with plant growth and development. The uptake enhancement part comprises a cell penetrating peptide sequence and a nuclear localization signal encoded by the peptide sequence SEQ ID NO 1.