Insecticidal cotton plants
US5608142A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 23, 1989 |
| Grant date | Mar 4, 1997 |
| Priority date | — |
| Expiry date | Jan 23, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02A40/146
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
A plant expression vector is constructed to cause the expression of an amino-terminal portion of the Bacillus thuringiensis delta-endotoxin gene in plant cells and the vector is used to create transgenic plants expressing the toxin. A truncated form of the toxin is used, with carboxy-terminal prolines added for stability. A translational enhancer sequence derived from the untranslated leader sequence from the mRNA of the coat protein gene of alfalfa mosaic virus coat protein gene is placed between a promoter and the toxin gene to increase translational efficiency. The transgenic plants produced are toxic to Lepidopteran pests and can transmit that trait to their progeny by normal Mendelian inheritance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.