RRC ID 607
Author Sirikantaramas S, Taura F, Tanaka Y, Ishikawa Y, Morimoto S, Shoyama Y.
Title Tetrahydrocannabinolic acid synthase, the enzyme controlling marijuana psychoactivity, is secreted into the storage cavity of the glandular trichomes.
Journal Plant Cell Physiol
Abstract Tetrahydrocannabinolic acid (THCA) synthase is the enzyme responsible for the production of tetrahydrocannabinol (THC), the psychoactive component of marijuana (Cannabis sativa L.). We suggest herein that THCA is biosynthesized in the storage cavity of the glandular trichomes based on the following observations. (i) The exclusive expression of THCA synthase was confirmed in the secretory cells of glandular trichomes by reverse transcription-PCR (RT-PCR) analysis. (ii) THCA synthase activity was detected in the storage cavity content. (iii) Transgenic tobacco expressing THCA synthase fused to green fluorescent protein showed fluorescence in the trichome head corresponding to the storage cavity. These results also showed that secretory cells of the glandular trichomes secrete not only metabolites but also biosynthetic enzyme.
Volume 46(9)
Pages 1578-82
Published 2005-9-1
DOI 10.1093/pcp/pci166
PII pci166
PMID 16024552
MeSH Base Sequence Cannabis / enzymology* DNA Primers Intramolecular Oxidoreductases / genetics Intramolecular Oxidoreductases / metabolism* Plant Leaves / enzymology* Plants, Genetically Modified Reverse Transcriptase Polymerase Chain Reaction Tobacco / genetics
IF 4.062
Times Cited 76
WOS Category PLANT SCIENCES CELL BIOLOGY
Resource
Arabidopsis / Cultured plant cells, genes rpc00001