Bacillus thuringiensis strains and their genes encoding insecticidal toxins
US5466597A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 17, 1992 |
| Grant date | Nov 14, 1995 |
| Priority date | — |
| Expiry date | Nov 17, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S435/832
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
Two new Bacillus thuringiensis strains, which are deposited at the DSM under accession nos 5870 and 5871, produce new crystal proteins during sporulation that are toxic to Coleoptera and that are encoded by new genes. The crystal proteins contain protoxins, which can yield toxins as trypsin-digestion products. A plant, the genome of which is transformed with a DNA sequence that comes from either one of the strains and that encodes an insecticidally effective portion of its respective protoxin or encodes its respective toxin, is resistant to Coleoptera. Each strain, itself, or its crystals, crystal proteins, protoxin, toxin and/or insecticidally effective protoxin portion can be used as the active ingredient in an insecticidal composition for combating Coleoptera.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.