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- Author:
- Bruce E Tabashnik, et al. ; Yves Carrière; Ben A Degain; Show all 3 Authors
- Source:
- Pest management science 2021 v.77 no.4 pp. 2106-2113
- ISSN:
- 1526-498X
- Subject:
- Bacillus thuringiensis; Helicoverpa zea; Zea mays; corn; ears; evolution; gene flow; larvae; pest management; pests; seed mixtures; Arizona
- Abstract:
- ... BACKGROUND: Using natural populations of Helicoverpa zea from Arizona, we tested the hypotheses that gene flow between Bacillus thuringiensis (Bt) plants and non‐Bt plants in a seed mixture of 10% non‐Bt corn and 90% Bt corn producing Cry1A.105 and Cry2Ab reduces larval performance on ears from non‐Bt plants, or increases performance on ears from Bt plants. RESULTS: Gene flow was not detected in b ...
- DOI:
- 10.1002/ps.6239
- https://doi.org/10.1002/ps.6239
- Author:
- Bruce E. Tabashnik, et al. ; Johnnie Van den Berg; Boddupalli M. Prasanna; Charles A. O. Midega; Pamela C. Ronald; Yves Carrière; Show all 6 Authors
- Source:
- Journal of economic entomology 2021 v.114 no.5 pp. 1934-1949
- ISSN:
- 0022-0493
- Subject:
- Bacillus thuringiensis; Spodoptera frugiperda; bacteria; compliance; corn; cultivars; entomology; food security; host range; integrated pest management; stakeholders; toxins; transgenes; South Africa
- Abstract:
- ... The recent invasion of Africa by fall armyworm, Spodoptera frugiperda, a lepidopteran pest of maize and other crops, has heightened concerns about food security for millions of smallholder farmers. Maize genetically engineered to produce insecticidal proteins from the bacterium Bacillus thuringiensis (Bt) is a potentially useful tool for controlling fall armyworm and other lepidopteran pests of ma ...
- DOI:
- 10.1093/jee/toab161
- https://doi.org/10.1093/jee/toab161
- Author:
- Bruce E. Tabashnik, et al. ; Yves Carrière; Show all 2 Author
- Source:
- Journal of economic entomology 2019 v.112 no.6 pp. 2513-2523
- ISSN:
- 0022-0493
- Subject:
- Bacillus thuringiensis; Pectinophora gossypiella; cotton; entomology; evolution; hybrids; pest control; pests; toxins; China; India
- Abstract:
- ... Crops genetically engineered to produce insecticidal proteins from Bacillus thuringiensis (Bt) have advanced pest control, but their benefits have been reduced by evolution of resistance in pests.The global monitoring data reviewed here reveal 19 cases of practical resistance to Bt crops, which is field-evolved resistance that reduces Bt crop efficacy and has practical consequences for pest contro ...
- DOI:
- 10.1093/jee/toz173
- https://doi.org/10.1093/jee/toz173
- Author:
- Bruce E. Tabashnik, et al. ; Jianlei Huang; Yanjun Xu; Yayun Zuo; Yihua Yang; Yidong Wu; Show all 6 Authors
- Source:
- Insect biochemistry and molecular biology 2020 v.121 pp. 103361
- ISSN:
- 0965-1748
- Subject:
- Bacillus thuringiensis; Spodoptera exigua; bacteria; evolution; flowers; genes; homozygosity; insect biochemistry; molecular biology; pest resistance; pests; toxicity; toxins; vegetables
- Abstract:
- ... Insecticidal proteins from the bacterium Bacillus thuringiensis (Bt) can provide safe and effective control of some major pests, but evolution of resistance by pests diminishes these benefits. Better understanding of the genetics and mechanisms of resistance is urgently needed to improve methods for monitoring, managing, and countering pest resistance to Bt toxins. Here we used CRISPR-mediated kno ...
- DOI:
- 10.1016/j.ibmb.2020.103361
- https://doi.org/10.1016/j.ibmb.2020.103361
- Author:
- Bruce E. Tabashnik, et al. ; Yves Carrière; Show all 2 Author
- Source:
- Journal of economic entomology 2019 v.113 no.2 pp. 553-561
- ISSN:
- 0022-0493
- Subject:
- Bacillus thuringiensis; Lepidoptera; bacteria; binding sites; crops; cross resistance; data collection; genetic engineering; insect pests; insecticidal proteins; pest control; pest resistance; toxins; transgenic plants
- Abstract:
- ... Crops genetically engineered to produce insecticidal proteins from the bacterium Bacillus thuringiensis (Bt) have revolutionized control of some major pests. Some recently introduced Bt crops make Vip3Aa, a vegetative insecticidal protein (Vip), which reportedly does not share binding sites or structural homology with the crystalline (Cry) proteins of Bt used widely in transgenic crops for more th ...
- DOI:
- 10.1093/jee/toz308
- https://doi.org/10.1093/jee/toz308
- Author:
- Bruce E. Tabashnik, et al. ; Leighton R. Liesner; Peter C. Ellsworth; Gopalan C. Unnithan; Jeffrey A. Fabrick; Steven E. Naranjo; Xianchun Li; Timothy J. Dennehy; Larry Antilla; Robert T. Staten; Yves Carrière; Show all 11 Authors
- Source:
- Proceedings of the National Academy of Sciences 2021 v.118 no.1 pp. e2019115118
- ISSN:
- 0027-8424
- Subject:
- Bacillus thuringiensis; Gossypium hirsutum; Pectinophora gossypiella; aerial application; botanical insecticides; computer simulation; cotton; disease eradication; insect pests; insecticidal proteins; invasive species; moths; plant-incorporated protectants; population size; sterile insect technique; transgenic plants; Arizona; Mexico
- Abstract:
- ... Invasive organisms pose a global threat and are exceptionally difficult to eradicate after they become abundant in their new habitats. We report a successful multitactic strategy for combating the pink bollworm (Pectinophora gossypiella), one of the world’s most invasive pests. A coordinated program in the southwestern United States and northern Mexico included releases of billions of sterile pink ...
- Handle:
- 10113/7344754
- DOI:
- 10.1073/pnas.2019115118
- CHORUS:
- 10.1073/pnas.2019115118
- https://doi.org/10.1073/pnas.2019115118
- Author:
- Bruce E Tabashnik, et al. ; Jintao Wang; Dong Xu; Ling Wang; Shengbo Cong; Peng Wan; Chaoliang Lei; Jeffrey A Fabrick; Xianchun Li; Kongming Wu; Show all 10 Authors
- Source:
- Pest management science 2020 v.76 no.2 pp. 527-533
- ISSN:
- 1526-498X
- Subject:
- Bacillus thuringiensis; DNA; Gossypium; Pectinophora gossypiella; alleles; bacterial proteins; bacterial toxins; bioassays; cotton; crystal proteins; delta-endotoxins; farmers; genetic resistance; inheritance (genetics); insecticidal proteins; insecticide resistance; recessive genes; resistance mechanisms; river valleys; screening; transgenic plants; China; United States; Yangtze River
- Abstract:
- ... BACKGROUND: Although most monitoring of pest resistance to widely cultivated transgenic crops producing insecticidal proteins from Bacillus thuringiensis (Bt) relies on bioassays, DNA screening for alleles associated with resistance has some advantages, particularly for rare, recessively inherited resistance. In China's Yangtze River Valley, where farmers first planted transgenic cotton producing ...
- Handle:
- 10113/6813284
- DOI:
- 10.1002/ps.5541
- https://doi.org/10.1002/ps.5541
- Author:
- Bruce E. Tabashnik, et al. ; Yves Carrière; Ben A. Degain; Virginia S. Harpold; Gopalan C. Unnithan; Show all 5 Authors
- Source:
- Journal of economic entomology 2020 v.113 no.5 pp. 2041-2051
- ISSN:
- 0022-0493
- Subject:
- Bacillus thuringiensis; Helicoverpa zea; corn; durability; entomology; evolution; gene flow; pest resistance; progeny; seed mixtures
- Abstract:
- ... For delaying evolution of pest resistance to transgenic corn producing Bacillus thuringiensis (Bt) toxins, limited data are available to compare the effectiveness of refuges of non-Bt corn planted in seed mixtures versus blocks. Here we addressed this issue in the ear-feeding pest Helicoverpa zea Boddie by measuring its survival and development in the laboratory on ears from field plots with 90% C ...
- DOI:
- 10.1093/jee/toaa138
- https://doi.org/10.1093/jee/toaa138
- Author:
- Bruce E. Tabashnik, et al. ; Yves Carrière; Ben DeGain; Gopalan C. Unnithan; Virginia S. Harpold; Xianchun Li; Show all 6 Authors
- Source:
- Journal of economic entomology 2019 v.112 no.6 pp. 2907-2914
- ISSN:
- 0022-0493
- Subject:
- Bacillus thuringiensis; Helicoverpa zea; cotton; entomology; evolution; pests; progeny; pupation; toxins; transgenic plants
- Abstract:
- ... Under ideal conditions, widely adopted transgenic crop pyramids producing two or more distinct insecticidal proteins from Bacillus thuringiensis (Bt) that kill the same pest can substantially delay evolution of resistance by pests. However, deviations from ideal conditions diminish the advantages of such pyramids. Here, we tested the hypothesis that changes in maturing cotton producing Cry1Ac and ...
- DOI:
- 10.1093/jee/toz236
- https://doi.org/10.1093/jee/toz236
- Author:
- Bruce E Tabashnik, et al. ; Yves Carrière; Jennifer L Williams; David W Crowder; Show all 4 Authors
- Source:
- Pest management science 2018 v.74 no.11 pp. 2496-2503
- ISSN:
- 1526-498X
- Subject:
- Bacillus thuringiensis; Pectinophora gossypiella; alleles; cadherins; cost estimates; crops; crystal proteins; diet; enzymes; evolution; homozygosity; models; mutants; pest management; pests; polymerase chain reaction; population genetics; rearing; resistance management; toxins; transgenic plants
- Abstract:
- ... BACKGROUND: To improve resistance management strategies for Bacillus thuringiensis (Bt) crops, a better understanding of the relative fitness of pest genotypes with resistance alleles in the absence of Bt toxins is needed. Here, we evaluated the impact of costs of resistance to Bt toxin Cry1Ac on the relative fitness of specific pink bollworm (Pectinophora gossypiella) genotypes. We created two he ...
- DOI:
- 10.1002/ps.4928
- https://doi.org/10.1002/ps.4928
- Author:
- Bruce E. Tabashnik, et al. ; Yves Carrière; Jeffrey A. Fabrick; Show all 3 Authors
- Source:
- Trends in biotechnology 2016 v.34 no.4 pp. 291-302
- ISSN:
- 0167-7799
- Subject:
- Bacillus thuringiensis; Zea mays; bacterial toxins; crops; evolution; insecticidal proteins; pest management; pest resistance; pests; seed mixtures; transgenic plants
- Abstract:
- ... The primary strategy for delaying the evolution of pest resistance to transgenic crops that produce insecticidal proteins from Bacillus thuringiensis (Bt) entails refuges of plants that do not produce Bt toxins and thus allow survival of susceptible pests. Recent advances include using refuges together with Bt crop 'pyramids' that make two or more Bt toxins effective against the same pest, and pla ...
- Handle:
- 10113/62182
- DOI:
- 10.1016/j.tibtech.2015.12.011
- CHORUS:
- 10.1016/j.tibtech.2015.12.011
- https://doi.org/10.1016/j.tibtech.2015.12.011
- Author:
- Bruce E Tabashnik, et al. ; Yves Carrière; Ben A Degain; Gopalan C Unnithan; Virginia S Harpold; Shannon Heuberger; Xianchun Li; Show all 7 Authors
- Source:
- Pest management science 2018 v.74 no.3 pp. 627-637
- ISSN:
- 1526-498X
- Subject:
- Bacillus thuringiensis; Helicoverpa zea; alleles; cotton; crops; evolution; pest management; pests; progeny; resistance management; risk assessment; seasonal variation; simulation models; toxins; transgenic plants
- Abstract:
- ... BACKGROUND: In pests with inherently low susceptibility to Bacillus thuringiensis (Bt) toxins, seasonal declines in the concentration of Bt toxins in transgenic crops could accelerate evolution of resistance by increasing the dominance of resistance. Here, we evaluated Helicoverpa zea survival on young and old cotton plants that produced the Bt toxins Cry1Ac and Cry1F or did not produce Bt toxins. ...
- DOI:
- 10.1002/ps.4746
- CHORUS:
- 10.1002/ps.4746
- https://doi.org/10.1002/ps.4746
- Author:
- Bruce E. Tabashnik, et al. ; Shengyun Li; Fiaz Hussain; Gopalan C. Unnithan; Shuanglin Dong; Zain UlAbdin; Shaohua Gu; Lolita G. Mathew; Jeffrey A. Fabrick; Xinzhi Ni; Yves Carrière; Xianchun Li; Show all 12 Authors
- Source:
- Pesticide biochemistry and physiology 2019 v.158 pp. 54-60
- ISSN:
- 0048-3575
- Subject:
- Bacillus thuringiensis; Pectinophora gossypiella; alleles; cadherins; cotton; crystal proteins; evolution; insecticidal proteins; introns; larvae; messenger RNA; midgut; mutation; neonates; non-coding RNA; pests; planting; reverse transcriptase polymerase chain reaction; small interfering RNA; toxins; transcription (genetics); transgenic plants
- Abstract:
- ... Extensive planting of transgenic crops producing insecticidal proteins from the bacterium Bacillus thuringiensis (Bt) has spurred increasingly rapid evolution of resistance in pests. In the pink bollworm, Pectinophora gossypiella, a devastating global pest, resistance to Bt toxin Cry1Ac produced by transgenic cotton is linked with mutations in a gene (PgCad1) encoding a cadherin protein that binds ...
- Handle:
- 10113/6379083
- DOI:
- 10.1016/j.pestbp.2019.04.007
- CHORUS:
- 10.1016/j.pestbp.2019.04.007
- https://doi.org/10.1016/j.pestbp.2019.04.007
14. Decreased Cry1Ac activation by midgut proteases associated with Cry1Ac resistance in Helicoverpa zea
- Author:
- Bruce E Tabashnik, et al. ; Min Zhang; Jizhen Wei; Xinzhi Ni; Jie Zhang; Juan L Jurat‐Fuentes; Jeffrey A Fabrick; Yves Carrière; Xianchun Li; Show all 9 Authors
- Source:
- Pest management science 2019 v.75 no.4 pp. 1099-1106
- ISSN:
- 1526-498X
- Subject:
- Bacillus thuringiensis; Helicoverpa zea; alkaline phosphatase; brush border membrane vesicles; chymotrypsin; crystal proteins; genes; hybrids; liquids; membrane alanyl aminopeptidase; midgut; pest management; toxicity; toxins; transcription (genetics); trypsin; Georgia
- Abstract:
- ... BACKGROUND: Field‐evolved resistance of Helicoverpa zea to Bacillus thuringiensis (Bt) toxin Cry1Ac was first reported more than a decade ago, yet the underlying mechanisms remain elusive. Towards understanding the mechanisms of resistance to Cry1Ac, we analyzed a susceptible (LAB‐S) and two resistant (GA and GA‐R) strains of H. zea. The GA strain was derived from Georgia and exposed to Bt toxins ...
- DOI:
- 10.1002/ps.5224
- CHORUS:
- 10.1002/ps.5224
- https://doi.org/10.1002/ps.5224
- Author:
- Bruce E. Tabashnik, et al. ; Ling Wang; Yuemin Ma; Peng Wan; Kaiyu Liu; Yutao Xiao; Jintao Wang; Shengbo Cong; Dong Xu; Kongming Wu; Jeffrey A. Fabrick; Xianchun Li; Show all 12 Authors
- Source:
- Insect biochemistry and molecular biology 2018 v.94 pp. 28-35
- ISSN:
- 0965-1748
- Subject:
- Bacillus thuringiensis; Gram-positive bacteria; Pectinophora gossypiella; alleles; cadherins; cell membranes; cotton; cross resistance; crystal proteins; homozygosity; insecticidal proteins; insects; larvae; midgut; mutants; mutation; pest resistance; pests; river valleys; transgenic plants; China; Yangtze River
- Abstract:
- ... Evolution of pest resistance reduces the efficacy of insecticidal proteins from the gram-positive bacterium Bacillus thuringiensis (Bt) used widely in sprays and transgenic crops. In some previously studied strains of three major lepidopteran pests, resistance to Bt toxin Cry1Ac is associated with mutations disrupting the extracellular or cytoplasmic domains of cadherin proteins that bind Cry1Ac i ...
- Handle:
- 10113/5912403
- DOI:
- 10.1016/j.ibmb.2018.01.004
- CHORUS:
- 10.1016/j.ibmb.2018.01.004
- https://doi.org/10.1016/j.ibmb.2018.01.004
- Author:
- Bruce E. Tabashnik, et al. ; Ling Wang; Peng Wan; Shengbo Cong; Jintao Wang; Minsong Huang; Xianchun Li; Kongming Wu; Show all 8 Authors
- Source:
- Journal of economic entomology 2016 v.109 no.3 pp. 1357-1363
- ISSN:
- 0022-0493
- Subject:
- Bacillus thuringiensis; Pectinophora gossypiella; adults; diet; entomology; honey; larvae; longevity; oviposition; toxins
- Abstract:
- ... Insecticidal proteins from Bacillus thuringiensis (Bt) are used widely in sprays and transgenic plants to control insect pests. Although much research has elucidated the effects of Bt toxins on larvae, relatively little is known about their effects on adults. Here, we evaluated the effects of exposing adults to Bt toxin Cry1Ac on the life span and reproduction of two strains of pink bollworm (Pect ...
- DOI:
- 10.1093/jee/tow039
- https://doi.org/10.1093/jee/tow039
- Author:
- Bruce E. Tabashnik, et al. ; Yves Carrière; Alex J. Yelich; Ben A. Degain; Virginia S. Harpold; Gopalan C. Unnithan; Jae H. Kim; Lolita G. Mathew; Graham P. Head; Keerti S. Rathore; Jeffrey A. Fabrick; Show all 11 Authors
- Source:
- Crop protection 2019 v.126 pp. 104914
- ISSN:
- 0261-2194
- Subject:
- Bacillus thuringiensis; Gossypium; Pectinophora gossypiella; alleles; bolls; cadherins; cotton; cottonseed; crops; cultivars; gene frequency; gossypol; insect resistance; insects; larvae; models; mutation; pests; resistance management; seeds; toxins; transgenic plants
- Abstract:
- ... Fitness costs of resistance to Bacillus thuringiensis (Bt) toxins can delay or counter the evolution of insect resistance to transgenic Bt crops. Here we tested the hypothesis that the plant defensive compound gossypol in cottonseed increases costs associated with resistance to Bt toxin Cry1Ac in pink bollworm (Pectinophora gossypiella), a cosmopolitan pest that feeds primarily on cottonseed. Prev ...
- Handle:
- 10113/6570100
- DOI:
- 10.1016/j.cropro.2019.104914
- CHORUS:
- 10.1016/j.cropro.2019.104914
- https://doi.org/10.1016/j.cropro.2019.104914
- Author:
- Bruce E. Tabashnik, et al. ; Chenxi Liu; Yutao Xiao; Xianchun Li; Brenda Oppert; Kongming Wu; Show all 6 Authors
- Source:
- Scientific Reports 2014 v.4 no.7219 pp. -
- ISSN:
- 2045-2322
- Subject:
- Bacillus thuringiensis; Helicoverpa armigera; RNA interference; bacterial toxins; bioassays; crops; crossing; crystal proteins; diet; genes; insecticidal properties; insecticidal proteins; insecticide resistance; larvae; midgut; mutation; progeny; promoter regions; receptors; resistance mechanisms; toxicity; transcription (genetics); transgenic plants; trypsin
- Abstract:
- ... Transgenic plants producing insecticidal proteins from the bacterium Bacillus thuringiensis (Bt) are useful for pest control, but their efficacy is reduced when pests evolve resistance. Previously identified mechanisms of resistance to Bt toxins include reduced binding of activated Bt toxins to midgut receptors and reduced conversion of Bt protoxins to activated toxins by insect midgut proteases s ...
- Handle:
- 10113/60070
- DOI:
- 10.1038/srep07219
- PubMed:
- 25427690
- PubMed Central:
- PMC4245529
- https://doi.org/10.1038/srep07219
- Author:
- Bruce E. Tabashnik, et al. ; Robert J. Orpet; Ben A. Degain; Gopalan C. Unnithan; Kara L. Welch; Yves Carrière; Show all 6 Authors
- Source:
- Entomologia experimentalis et applicata 2015 v.156 no.1 pp. 28-36
- ISSN:
- 0013-8703
- Subject:
- Bacillus thuringiensis; Helicoverpa zea; Trichoplusia ni; artificial diets; carbohydrate content; carbohydrates; dietary protein; females; insecticidal proteins; insecticide resistance; laboratory experimentation; larvae; males; pupae; rearing; toxicity; toxins
- Abstract:
- ... The ratio of dietary protein to carbohydrate (P:C) affects the feeding performance of insect herbivores and was recently shown to affect susceptibility to Bt toxins and fitness costs of resistance in Trichoplusia ni Hübner. Here, we used laboratory experiments with larvae reared on artificial diet to determine whether dietary P:C ratio affects responses to Bt toxin Cry1Ac and fitness costs of resi ...
- DOI:
- 10.1111/eea.12308
- CHORUS:
- 10.1111/eea.12308
- https://doi.org/10.1111/eea.12308
20. Early detection of field-evolved resistance to Bt cotton in China: Cotton bollworm and pink bollworm
- Author:
- Bruce E. Tabashnik, et al. ; Kongming Wu; Yidong Wu; Show all 3 Authors
- Source:
- Journal of invertebrate pathology 2012 v.110 no.3 pp. 301-306
- ISSN:
- 0022-2011
- Subject:
- Bacillus thuringiensis; Helicoverpa armigera; Pectinophora gossypiella; bioassays; cotton; crops; crystal proteins; diet; evolution; farmers; host plants; insect pests; planting; river valleys; toxins; transgenic plants; China; Yangtze River
- Abstract:
- ... Transgenic crops producing Bacillus thuringiensis (Bt) toxins kill some major insect pests, but pests can evolve resistance and thereby reduce the effectiveness of such Bt crops. The main approach for slowing pest adaptation to Bt crops uses non-Bt host plants as “refuges” to increase survival of susceptible pests. To delay evolution of pest resistance to cotton producing Bt toxin Cry1Ac, several ...
- DOI:
- 10.1016/j.jip.2012.04.008
- https://doi.org/10.1016/j.jip.2012.04.008