殺虫タンパク質抵抗性コナガに対するBacillus thuringiensis胞子混合の殺虫活性増強効果

概要

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The diamondback moth, PluteIla xylostella that was 2,400-fold resistant to insecticidal proteins of Bacillus thuringiensis serovar kurstaki HD-1 was selected from the susceptible strain. Against the resistant strain, spore combination enhanced the activity of kurstaki HD-1 insecticidat proteins 8,800-fold, which was significantly higher than the enhancement (160-fold) against the susceptible strain. When recombinant CrylAa, CrylAb or CrylAc toxin was fed to the susceptible strain, the spore combination enhanced the activity only 3 to 8-fold. Against the reistant strain, however, the spore combinations with recombinant proteins enhanced the activities more than 900-fold. These results show that the spore combination with insecticida! Proteins is also effective to control the diamondback moth larvae that developed resistance to the insecticidal proteins of B. thuringiensis.
日本応用動物昆虫学会の論文
2003-05-25