کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4494988 | 1318737 | 2012 | 7 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Comparative Analysis of CrylAc Toxin Oligomerization and Pore Formation Between Bt-Susceptible and Bt-Resistant Helicoverpa armigera Larvae Comparative Analysis of CrylAc Toxin Oligomerization and Pore Formation Between Bt-Susceptible and Bt-Resistant Helicoverpa armigera Larvae](/preview/png/4494988.png)
With the long-term use of Bacillus thuringiensis (Bt) insecticide and expansion of Cry1A-expressing transgenic plants, some insect pests have developed resistance to Bt in open fields, greenhouses, and in the laboratory. Bt resistance is complex and there appear to be different ways for resistance development. Understanding the Bt resistance mechanisms is critical to prolong its usefulness. In this article, Bt receptors, the cadherin and aminopeptidase N (APN), in brush border membrane vesicles (BBMV) of Helicoverpa armigera were examined in both Cry1Ac-susceptible (96S) and Cry1Ac-resistant (LF120) strains, to compare Cry1Ac toxin oligomerization and pore formation in these two strains. Cry1Ac toxin oligomerization and pore formation in these two strains were compared. Results showed that cadherin and aminopeptidase N proteins could express normally in both susceptible and resistant H. armigera strains. The ability to form Cry1Ac oligomers and ion channels on BBMVs was also not significantly different between these two strains.
Journal: Journal of Integrative Agriculture - Volume 11, Issue 11, November 2012, Pages 1845-1851