摘要:
This invention concerns novel gene probes which can be used to identify DNA from Bacillus thuringiensis microbes which encode insecticidally-active protein endotoxins. The invention probes greatly facilitate the search for useful microbes hosting genes which encode insecticidally-active 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:
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 subject invention concerns Bacillus thuringiensis isolates designated B.t. PS157C1, B.t. PS86A1, and B.t. PS75J1, which are active against aphid pests. Thus, these isolates, or variants thereof, can be used to control such pests. Further, genes encoding novel .delta.-endotoxins can be removed from these isolates and transferred to other host microbes, or plants. Expression of the .delta.-endotoxins in microbe hosts results in the control of aphid pests, whereas transformed plants become resistant to aphid 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:
A novel B.t. gene encoding a toxin which is toxic to nematodes has been cloned from a B. thuringiensis 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 nematodes in various environments.
摘要:
A novel B.t. gene encoding a toxin which is toxic to nematodes has been cloned from a B. thuringiensis 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 nematodes in various environments.