Composition and Methods for Producing Tobacco Plants and Products Having Reduced Tobacco-Specific Nitrosamines (TSNAs)
US-2018119163-A1 · May 3, 2018 · US
Method for reducing nornicotine in tobacco
US12543694B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12543694-B2 |
| Application number | US-201917250552-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 1, 2019 |
| Priority date | Aug 2, 2018 |
| Publication date | Feb 10, 2026 |
| Grant date | Feb 10, 2026 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
The present invention relates to a method of reducing the content of at least one tobacco specific nitrosamine (TSNA) or a precursor of a TSNA in tobacco comprising expressing a deregulated cation efflux protein in a tobacco plant, or plant part thereof, or plant cell.
First claim
Opening claim text (preview).
The invention claimed is: 1 . A tobacco plant or part thereof or tobacco plant propagation material: which has been modified to achieve a reduction in nornicotine compared with an unmodified tobacco plant or part thereof or tobacco plant propagation material, wherein the modified tobacco plant or part thereof or tobacco plant propagation material comprises a deregulated zinc cation efflux protein which results in said reduction in nornicotine, and wherein the deregulated zinc cation efflux protein comprises the amino acid sequence of SEQ ID NO:33 or a sequence which has at least 95% sequence identity thereto. 2 . The tobacco plant or part thereof or plant propagation material according to claim 1 , wherein the plant is from the species Nicotiana tabacum or Nicotiana rustica. 3 . A harvested leaf or a cut harvested leaf of the tobacco plant according to claim 1 .
Assignees
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Classifications
Leaves · CPC title
involving biosynthetic or metabolic pathways, i.e. metabolic engineering, e.g. nicotine or caffeine · CPC title
for yeasts · CPC title
Antisense, co-suppression, viral induced gene silencing [VIGS], post-transcriptional induced gene silencing [PTGS] · CPC title
from plants · CPC title
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Frequently asked questions
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- What does patent US12543694B2 cover?
- The present invention relates to a method of reducing the content of at least one tobacco specific nitrosamine (TSNA) or a precursor of a TSNA in tobacco comprising expressing a deregulated cation efflux protein in a tobacco plant, or plant part thereof, or plant cell.
- Who is the assignee on this patent?
- British American Tobacco Investments Ltd
- What technology area does this patent fall under?
- Primary CPC classification A01H6/823. Mapped technology areas include Human Necessities.
- When was this patent published?
- Publication date Tue Feb 10 2026 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).