Trichome specific promoters for the manipulation of cannabinoids and other compounds in glandular trichomes
The present technology provides trichome specific promoters of cannabinoid biosynthesis enzyme genes from Cannabis , nucleotide sequences of the trichome specific promoters, and uses of the promoters for modulating the production of cannabinoids and other compounds in organisms. The present technology also provides chimeric genes, vectors, and transgenic cells and organisms, including plant cells and plants, comprising the trichome specific promoters. Also provided are methods for expressing nucleic acid sequences in cells and organisms using the trichome specific promoters.
1. A synthetic DNA molecule comprising a nucleotide sequence selected from the group consisting of
(a) a nucleotide sequence set forth in any one of SEQ ID NOs: 1-3; and
(b) a nucleotide sequence that is at least about 95% identical to the nucleotide sequence of any one of SEQ ID NOs: 1-3, or 31-33, and which encodes a promoter having plant trichome gland specific transcriptional activity,
wherein the nucleotide sequence of (a) or (b) is operably linked to a heterologous nucleic acid.
2. An expression vector comprising the synthetic DNA molecule of claim 1 .
3. A genetically engineered plant cell comprising the expression vector of claim 2 .
4. The genetically engineered host cell of claim 3 , wherein the cell is a Cannabis sativa cell.
5. The genetically engineered host cell of claim 3 , wherein the cell is a Nicotiana tabacum cell.
6. A genetically engineered plant comprising a cell comprising a chimeric nucleic acid construct comprising the synthetic DNA molecule of claim 1 .
7. The engineered plant of claim 6 , wherein the plant is an N. tabacum plant.
8. The engineered plant of claim 6 , wherein the plant is a C. sativa plant.
9. Seeds from the engineered plant of claim 6 , wherein the seeds comprise the chimeric nucleic acid construct.
10. A genetically engineered plant or plant cell comprising a chimeric gene integrated into its genome, the chimeric gene comprising a trichome specific promoter operably linked to a homologous or heterologous nucleic acid sequence, wherein the promoter is selected from the group consisting of:
(a) a nucleotide sequence of any one of SEQ ID NOs: 1-3; and
(b) a nucleotide sequence that is at least about 95% identical to the nucleotide sequence of any one of SEQ ID NOs: 1-3, or 31-33, and which encodes the promoter that has plant trichome gland specific transcriptional activity.
11. The genetically engineered plant or plant cell of claim 10 , wherein the plant is an N. tabacum plant.
12. The genetically engineered plant or plant cell of claim 10 , wherein the plant is a C. sativa plant.
13. A method for expressing a polypeptide in plant trichomes, comprising:
(a) introducing into a host cell an expression vector comprising a nucleotide sequence selected from the group consisting of:
(i) a nucleotide sequence set forth in any one of SEQ ID NOs: 1-3; and
(ii) a nucleotide sequence that is at least about 95% identical to the nucleotide sequence of any one of SEQ ID NOs: 1-3, and which encodes a promoter that has plant trichome gland specific transcriptional activity;
wherein the nucleic acid sequence of (i) or (ii) is operably linked to one or more nucleic acid sequences encoding a polypeptide; and
(b) growing the plant under conditions which allow for the expression of the polypeptide.