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 Previous Article

Applied and Environmental Microbiology, September 2009, p. 5739-5741, Vol. 75, No. 17
0099-2240/09/$08.00+0     doi:10.1128/AEM.00664-09
Copyright © 2009, American Society for Microbiology. All Rights Reserved.

Modified Bacillus thuringiensis Toxins and a Hybrid B. thuringiensis Strain Counter Greenhouse-Selected Resistance in Trichoplusia ni{triangledown}

Michelle T. Franklin,1* Christal L. Nieman,1 Alida F. Janmaat,2 Mario Soberón,3 Alejandra Bravo,3 Bruce E. Tabashnik,4 and Judith H. Myers1

Department of Zoology, University of British Columbia, 2370-6270 University Boulevard, Vancouver, British Columbia, Canada V6T 1Z4,1 Department of Biology, University of the Fraser Valley, 33844 King Road, Abbotsford, British Columbia, Canada V2S 7M8,2 Instituto de Biotecnología, Universidad Nacional Autónoma de México, Apdo. Postal 510-3, Cuernavaca 62250, Morelos, Mexico,3 Department of Entomology, University of Arizona, Tucson, Arizona 857214

Received 20 March 2009/ Accepted 6 July 2009

Resistance of greenhouse-selected strains of the cabbage looper, Trichoplusia ni, to Bacillus thuringiensis subsp. kurstaki was countered by a hybrid strain of B. thuringiensis and genetically modified toxins Cry1AbMod and Cry1AcMod, which lack helix {alpha}-1. Resistance to Cry1AbMod and Cry1AcMod was >100-fold less than resistance to native toxins Cry1Ab and Cry1Ac.

* Corresponding author. Mailing address: Department of Zoology, University of British Columbia, 2370-6270 University Boulevard, Vancouver, British Columbia, Canada V6T 1Z4. Phone: (604) 822-5979. Fax: (604) 822-2416. E-mail: franklin{at}zoology.ubc.ca

{triangledown} Published ahead of print on 10 July 2009.

Applied and Environmental Microbiology, September 2009, p. 5739-5741, Vol. 75, No. 17
0099-2240/09/$08.00+0     doi:10.1128/AEM.00664-09
Copyright © 2009, American Society for Microbiology. All Rights Reserved.





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