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Transgenic Res

Title:		Effect of Bt genetic engineering on indirect defense in cotton via a tritrophic interaction
Author(s):		Moraes MC; Laumann RA; Aquino MF; Paula DP; Borges M;
Address:		"Embrapa Genetic Resources and Biotechnology, Parque Estacao Biologica-W5 Norte (Final), 70770-917, Brasilia, DF, Brazil. mcbmorae@cenargen.embrapa.br"
Journal Title:		Transgenic Res
Year:		2011
Volume:		20100604
Issue:		1
Page Number:		99 - 107
DOI:		10.1007/s11248-010-9399-0
ISSN/ISBN:		1573-9368 (Electronic) 0962-8819 (Linking)
Abstract:		"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(R) 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-non Bt 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"
Keywords:		Animals Bacillus thuringiensis/genetics/metabolism Bacillus thuringiensis Toxins Bacterial Proteins/*genetics Endotoxins/*genetics Feeding Behavior/physiology Genetic Engineering/*methods *Gossypium/genetics/microbiology/parasitology Hemolysin Proteins/*g;
Notes:		"MedlineMoraes, Maria Carolina Blassioli Laumann, Raul Alberto Aquino, Michely Ferreira Santos Paula, Debora Pires Borges, Miguel eng Evaluation Study Research Support, Non-U.S. Gov't Netherlands 2010/06/04 Transgenic Res. 2011 Feb; 20(1):99-107. doi: 10.1007/s11248-010-9399-0. Epub 2010 Jun 4"