| 摘要 |
The present invention describes an insecticidal toxin, prepared by means of genetic manipulation methods, from Bacillus thuringiensis, which in contrast to its natural counterpart is still stable even at temperatures >25 DEG C, and the DNA encoding said toxin. The invention additionally relates to genetic manipulation methods for preparing a temperature-stable toxin of this type and to the vectors, plasmids and host organisms which contain the toxin-encoding DNA and are employed in this method. Likewise embraced by the present invention are insecticidal agents which contain said temperature-stable B.t. toxin as active component, and the use thereof in a method for controlling insect pests. |
