摘要:
Disclosed are compositions and processes for controlling lepidopteran pests. These compositions comprise synergistic combinations of a CryIF chimeric and CryIA(c) chimeric Bacillus thuringiensis .delta.-endotoxin. These compositions have been found to exhibit excellent activity against lepidopteran pests.
摘要:
Disclosed are compositions and processes for controlling lepidopteran pests. These compositions comprise synergistic combinations of a CryIF chimeric and CryIA(c) chimeric Bacillus thuringiensis .delta.-endotoxin. These compositions have been found to exhibit excellent activity against lepidopteran pests.
摘要:
A novel B.t. gene encoding a toxin which is toxic to coleopteran insects has been cloned from a coleopteran-active B. thurningiensis microbe. The DNA encoding the B.t. toxin can be used to transform various prokaryotic and eukaryotic microbes to express the B.t. toxin. These recombinant microbes can be used to control coleopteran insects in various environments.
摘要:
The subject disclosure concerns Bacillus thuringiensis strains which can be used to control lepidopteran pests. The strains were previously known to control coleopteran pests. The discovery of lepidopteran activity was totally unexpected.These B.t. strains can be formulated using standard lepidopteran formulation procedures. Means of administration are also standard.The genes encoding lepidopteran-active toxins can be isolated from the B.t. isolates and used to transform other microbes for use to control lepidopteran pests.
摘要:
This invention concerns novel gene probes which can be used to identify DNA from Bacillus thuringiensis microbes which encode protein endotoxins. The invention probes greatly facilitate the search for useful microbes hosting genes which encode toxins.
摘要:
An improved Bacillus thuringiensis (B.t.) delta-endotoxin is created by the modification of the gene encoding the toxin. The toxicity of a B.t. toxin was improved by replacing the native protoxin segment with an alternate protoxin segment by constructing a chimeric toxin gene.
摘要:
The invention concerns novel hybrid pesticidal toxins. These toxins are expressed as the fusion protein of a chimeric gene. Specifically exemplified is a novel B.t. hybrid toxin. These novel toxins have increased toxicity against target pests. The invention also concerns a process for preparing a hybrid virus having an altered insect host range.
摘要:
The invention concerns novel hybrid pesticidal toxins. These toxins are expressed as the fusion protein of a chimeric gene. Specifically exemplified is a novel B.t. hybrid toxin. These novel toxins have increased toxicity against target pests. The invention also concerns a process for preparing a hybrid virus having an altered insect host range.
摘要:
Bacillus thuringiensis endotoxin expression in Pseudomonads can be improved by modifying the gene encoding the Bacillus thuringiensis endotoxin. Chimeric genes are created by replacing the segment of the Bacillus thuringiensis gene encoding a native protoxin with a segment encoding a different protoxin. Exemplified herein is the cryIF/cryI(b) chimera wherein the native cryIF protoxin segment has been substituted by the cryIA(b) protoxin segment, to yield improved expression of the cryIF toxin in Pseudomonads. The invention also concerns novel genes and plasmids.
摘要:
Bacillus thuringiensis endotoxin expression in Pseudomonads can be improved by modifying the gene encoding the Bacillus thuringiensis endotoxin. Chimeric genes are created by replacing the segment of the Bacillus thuringiensis gene encoding a native protoxin with a segment encoding a different protoxin. Exemplified herein is the cryIF/cryI(b) chimera wherein the native cryIF protoxin segment has been substituted by the cryIA(b) protoxin segment, to yield improved expression of the cryIF toxin in Pseudomonads. The invention also concerns novel genes and plasmids.