Compositions and methods for producing tobacco plants and products having reduced or eliminated suckers
The present disclosure provides the identification of genes involved in sucker growth in tobacco. Also provided are promoters that are preferentially active in tobacco axillary buds. Also provided are modified tobacco plants comprising reduced or no sucker growth. Also provided are methods and compositions for producing modified tobacco plants comprising reduced or no sucker growth.
1. A modified tobacco plant comprising no or reduced suckers compared to a control tobacco plant of the same variety when grown under comparable conditions, wherein said modified tobacco plant comprises a heterologous axillary meristem-specific promoter functional in a central zone, a peripheral zone, a rib zone, or any combination thereof operably linked to a nucleotide sequence encoding a mitogen-activated protein kinase kinase polypeptide having an amino acid sequence at least 95% identical or similar to SEQ ID NO: 233.
2. The modified tobacco plant of claim 1 , wherein said heterologous axillary meristem-specific promoter comprises a nucleic acid sequence having at least 95% sequence identity to a polynucleotide selected from the group consisting of SEQ ID NOs: 113, 115-118, 148, 149, 151, 153, 155, 157, 159, and 204.
3. The modified tobacco plant of claim 1 , wherein said reduced suckers comprises at least 10% fewer suckers.
4. The modified tobacco plant of claim 1 , wherein said reduced suckers comprises reduced mass, reduced length, or both.
5. The modified tobacco plant of claim 1 , wherein said modified tobacco plant requires reduced management for controlling suckers compared to a control tobacco plant when grown under comparable conditions.
6. The modified tobacco plant of claim 5 , wherein said reduced management comprises reduced manual removal frequency to control suckers, reduced chemical application frequency to control suckers, reduced quantities of chemical application to control suckers, or any combination thereof.
7. The modified tobacco plant of claim 6 , wherein said reduced manual removal frequency to control suckers comprises less than 95% as frequently as a control plant when grown under comparable conditions.
8. A tobacco leaf of the modified tobacco plant of claim 1 .
9. A tobacco product comprising cured tobacco material from the modified tobacco plant of claim 1 .
10. The tobacco product of claim 9 , wherein said tobacco product is selected from the group consisting of a cigarette, a kretek, a bidi cigarette, a cigar, a cigarillo, a non-ventilated cigarette, a vented recess filter cigarette, pipe tobacco, snuff, chewing tobacco, moist smokeless tobacco, fine cut chewing tobacco, long cut chewing tobacco, pouched chewing tobacco product, gum, a tablet, a lozenge, and a dissolving strip.
11. A tobacco plant or seed comprising a heterologous recombinant polynucleotide, wherein said recombinant polynucleotide comprises:
a. an axillary meristem-specific promoter that is functional in a rib zone, a central zone, a peripheral zone, or any combination thereof, and wherein said axillary meristem-specific promoter is operably linked to
b. a structural nucleic acid molecule comprising a nucleic acid sequence, wherein said nucleic acid sequence encodes a mitogen-activated protein kinase kinase polypeptide at least 95% identical or similar to the amino acid sequence of SEQ ID NO: 233.
12. The tobacco plant or seed of claim 11 , wherein said axillary meristem-specific promoter comprises a nucleic acid sequence having at least 95% sequence identity to a polynucleotide selected from the group consisting of SEQ ID NOs: 113, 115-118, 148, 149, 151, 153, 155, 157, 159, and 204.
13. The modified tobacco plant of claim 1 , wherein the mitogen-activated protein kinase kinase polypeptide comprises an amino acid sequence 100% identical or similar to SEQ ID NO: 233.
14. The modified tobacco plant of claim 1 , wherein the mitogen-activated protein kinase kinase polypeptide is encoded by SEQ ID NO: 232.
15. The tobacco plant or seed of claim 11 , wherein the mitogen-activated protein kinase kinase polypeptide comprises an amino acid sequence 100% identical or similar to SEQ ID NO: 233.
16. The tobacco plant or seed of claim 11 , wherein the mitogen-activated protein kinase kinase polypeptide is encoded by SEQ ID NO: 232.
17. A leaf of the tobacco plant of claim 11 .
18. A tobacco product comprising cured tobacco material from the leaf of claim 17 .
19. The tobacco product of claim 18 , wherein said tobacco product is selected from the group consisting of a cigarette, a kretek, a bidi cigarette, a cigar, a cigarillo, a non-ventilated cigarette, a vented recess filter cigarette, pipe tobacco, snuff, chewing tobacco, moist smokeless tobacco, fine cut chewing tobacco, long cut chewing tobacco, pouched chewing tobacco product, gum, a tablet, a lozenge, and a dissolving strip.
20. The modified tobacco plant of claim 1 , wherein said heterologous axillary meristem-specific promoter comprises a nucleic acid sequence selected from the group consisting of SEQ ID NOs: 113, 115-118, 148, 149, 151, 153, 155, 157, 159, and 204.