Resistance of Cotton Lines Containing a Bacillus thuringiensis Toxin to Pink Bollworm (Lepidoptera: Gelechiidae) and other Insects

1992 ◽  
Vol 85 (4) ◽  
pp. 1516-1521 ◽  
Author(s):  
Douglas F. Wilson ◽  
Hollis M. Flint ◽  
Randy W. Deaton ◽  
David A. Fischhoff ◽  
Frederick J. Perlak ◽  
...  
Keyword(s):  
Bacillus Thuringiensis ◽  
Pink Bollworm ◽  
Bacillus Thuringiensis Toxin

High-Level Resistance to Bacillus thuringiensis Toxin Cry1Ac and Cadherin Genotype in Pink Bollworm

2006 ◽  
Vol 99 (6) ◽  
pp. 2125-2131 ◽  
Author(s):  
Bruce E. Tabashnik ◽  
Robert W. Biggs ◽  
Jeffrey A. Fabrick ◽  
Aaron J. Gassmann ◽  
Timothy J. Dennehy ◽  
...  
Keyword(s):  
Bacillus Thuringiensis ◽  
Pink Bollworm ◽  
Bacillus Thuringiensis Toxin ◽  
High Level ◽  
Level Resistance

Effects of Four Nematode Species on Fitness Costs of Pink Bollworm Resistance to Bacillus thuringiensis Toxin Cry1Ac

2010 ◽  
Vol 103 (5) ◽  
pp. 1821-1831 ◽  
Author(s):  
Eugene R. Hannon ◽  
Mark S. Sisterson ◽  
S. Patricia Stock ◽  
Yves Carrière ◽  
Bruce E. Tabashnik ◽  
...  
Keyword(s):  
Bacillus Thuringiensis ◽  
Nematode Species ◽  
Pink Bollworm ◽  
Fitness Costs ◽  
Bacillus Thuringiensis Toxin

Characterization of a novel Bacillus thuringiensis toxin active against Aedes aegypti larvae

Acta Tropica ◽  
2021 ◽  
pp. 106088
Author(s):  
Jiangyu Wu ◽  
Li Wei ◽  
Jiali He ◽  
Kang Fu ◽  
Xinxin Li ◽  
...  
Keyword(s):  
Bacillus Thuringiensis ◽  
Aedes Aegypti ◽  
Bacillus Thuringiensis Toxin

scholarly journals Retargeting of the Bacillus thuringiensis toxin Cyt2Aa against hemipteran insect pests

2013 ◽  
Vol 110 (21) ◽  
pp. 8465-8470 ◽  
Author(s):  
N. P. Chougule ◽  
H. Li ◽  
S. Liu ◽  
L. B. Linz ◽  
K. E. Narva ◽  
...  
Keyword(s):  
Bacillus Thuringiensis ◽  
Insect Pests ◽  
Bacillus Thuringiensis Toxin ◽  
Hemipteran Insect

Effects of Entomopathogenic Nematodes on Evolution of Pink Bollworm Resistance to Bacillus thuringiensis Toxin Cry1Ac

2012 ◽  
Vol 105 (3) ◽  
pp. 994-1005 ◽  
Author(s):  
Aaron J. Gassmann ◽  
Eugene R. Hannon ◽  
Mark S. Sisterson ◽  
S. Patricia Stock ◽  
Yves Carrière ◽  
...  
Keyword(s):  
Bacillus Thuringiensis ◽  
Entomopathogenic Nematodes ◽  
Pink Bollworm

scholarly journals Control of Resistant Pink Bollworm (Pectinophora gossypiella) by Transgenic Cotton That Produces Bacillus thuringiensis Toxin Cry2Ab

2002 ◽  
Vol 68 (8) ◽  
pp. 3790-3794 ◽  
Author(s):  
Bruce E. Tabashnik ◽  
Timothy J. Dennehy ◽  
Maria A. Sims ◽  
Karen Larkin ◽  
Graham P. Head ◽  
...  
Keyword(s):  
Bacillus Thuringiensis ◽  
First Generation ◽  
Second Generation ◽  
Transgenic Cotton ◽  
Larval Survival ◽  
Genetically Engineered ◽  
Pink Bollworm ◽  
Pectinophora Gossypiella ◽  
Cross Resistance ◽  
Average Survival

ABSTRACT Crops genetically engineered to produce Bacillus thuringiensis toxins for insect control can reduce use of conventional insecticides, but insect resistance could limit the success of this technology. The first generation of transgenic cotton with B. thuringiensis produces a single toxin, Cry1Ac, that is highly effective against susceptible larvae of pink bollworm (Pectinophora gossypiella), a major cotton pest. To counter potential problems with resistance, second-generation transgenic cotton that produces B. thuringiensis toxin Cry2Ab alone or in combination with Cry1Ac has been developed. In greenhouse bioassays, a pink bollworm strain selected in the laboratory for resistance to Cry1Ac survived equally well on transgenic cotton with Cry1Ac and on cotton without Cry1Ac. In contrast, Cry1Ac-resistant pink bollworm had little or no survival on second-generation transgenic cotton with Cry2Ab alone or with Cry1Ac plus Cry2Ab. Artificial diet bioassays showed that resistance to Cry1Ac did not confer strong cross-resistance to Cry2Aa. Strains with >90% larval survival on diet with 10 μg of Cry1Ac per ml showed 0% survival on diet with 3.2 or 10 μg of Cry2Aa per ml. However, the average survival of larvae fed a diet with 1 μg of Cry2Aa per ml was higher for Cry1Ac-resistant strains (2 to 10%) than for susceptible strains (0%). If plants with Cry1Ac plus Cry2Ab are deployed while genes that confer resistance to each of these toxins are rare, and if the inheritance of resistance to both toxins is recessive, the efficacy of transgenic cotton might be greatly extended.

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