Effect of Bt genetic engineering on indirect defense in cotton via a tritrophic interaction

被引：0
作者：
Maria Carolina Blassioli Moraes
Raul Alberto Laumann
Michely Ferreira Santos Aquino
Débora Pires Paula
Miguel Borges
机构：
[1] Embrapa Genetic Resources and Biotechnology,
来源：
Transgenic Research | 2011年 / 20卷
关键词：
Tritrophic interaction; Biosafety analysis; Natural enemy; Herbivory; Plant volatile defensive compounds; Cotton;
D O I：
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学科分类号：
摘要：
We present a tritrophic analysis of the potential non-intended pleiotropic effects of cry1Ac gene derived from Bacillus thurigiensis (Bt) insertion in cotton (DeltaPine 404 Bt Bollgard® variety) on the emission of herbivore induced volatile compounds and on the attraction of the egg parasitoid Trichogramma pretisoum (Hymenoptera: Trichogrammatidae). Both the herbivore damaged Bt variety and its non-Bt isoline (DeltaPine DP4049 variety) produced volatiles in higher quantity when compared to undamaged plants and significantly attracted the egg parasitoids (T. pretiosum) when compared to undamaged plants. However, Trichogramma pretiosum did not differentiate between the transgenic and nontransgenic varieties, suggesting that the ratios between the compounds released by herbivory damaged -Bt cotton and herbivory damaged-nonBt cotton did not change significantly. Finally, no detrimental effect of the Bt genetic engineering was detected related to the volatile compounds released by Bollgard cotton on the behavior of the natural enemy studied.
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页码：99 / 107
页数：8
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