2.1.1.128 up enzyme expression is upregulated in the high papaverine mutant pap1 735093 2.1.1.128 up the over-expression of regulatory factors AP2G, AN1-like, ERF2, GARP, MDB025 and WRKY1 increases the levels of codeinone reductase, (S-adenosyl-L-methionine:3'-hydroxy-N-methylcoclaurine 4'-O-methyltransferase) and (R,S)-norcoclaurine 6-O-methyltransferase transcripts by 10- to more than 100fold. The transcriptional activations translate into an enhancement of alkaloid production in opium poppy of up to at least 10fold 689454