Management of insect pests with Bt crops in the United States

AJ Gassmann, DD Reisig - Annual Review of Entomology, 2023 - annualreviews.org
Genetically engineered corn and cotton that produce insecticidal toxins derived from the
bacterium Bacillus thuringiensis (Bt) have been used to manage insect pests in the United …

Insect resistance management in Bacillus thuringiensis cotton by MGPS (multiple genes pyramiding and silencing)

MM Zafar, A Razzaq, MA Farooq, A Rehman… - Journal of Cotton …, 2020 - Springer
The introduction of Bacillus thuringiensis (Bt) cotton has reduced the burden of pests without
harming the environment and human health. However, the efficacy of Bt cotton has …

Practical resistance to Cry toxins and efficacy of Vip3Aa in Bt cotton against Helicoverpa zea

F Yang, DL Kerns, N Little, SA Brown… - Pest management …, 2022 - Wiley Online Library
BACKGROUND Crops genetically engineered to make insect‐killing proteins from Bacillus
thuringiensis (Bt) have revolutionized management of some pests. However, the benefits of …

A Modified F2 Screen for Estimating Cry1Ac and Cry2Ab Resistance Allele Frequencies in Helicoverpa zea (Lepidoptera: Noctuidae)

JC Santiago-González, DL Kerns… - Journal of economic …, 2023 - academic.oup.com
Evaluating the frequency of resistance alleles is important for resistance management and
sustainable use of transgenic crops that produce insecticidal proteins from Bacillus …

Magnitude and Extent of Helicoverpa zea Resistance Levels to Cry1Ac and Cry2Ab2 across the Southeastern USA

D Reisig, GD Buntin, JK Greene, SV Paula-Moraes… - Insects, 2023 - mdpi.com
Simple Summary After resistance is first detected, continued resistance monitoring to
describe the magnitude and extent of the resistance can inform pest management decisions …

Resistance Allele Frequency of Helicoverpa zea to Vip3Aa Bacillus thuringiensis Protein in the Southeastern US

JC Santiago-González, DL Kerns, F Yang - Insects, 2023 - mdpi.com
Simple Summary Evolution of insect resistance is the main threat to the sustainability of the
Bt technology. Helicoverpa zea (Boddie)(Lepidoptera: Noctuidae) is a major target pest of Bt …

Contrasting susceptibility of lepidopteran pests to diamide and pyrethroid insecticides in a region of overwintering and migratory intersection

MM Rabelo, SV Paula‐Moraes… - Pest Management …, 2020 - Wiley Online Library
BACKGROUND Pesticide resistance is a growing issue worldwide, and susceptibility of pest
populations should be monitored in migratory intersection regions for successful resistance …

Effective dominance and redundant killing of single‐ and dual‐gene resistant populations of Helicoverpa zea on pyramided Bt corn and cotton

JC Santiago‐González, DL Kerns… - Pest management …, 2022 - Wiley Online Library
Abstract BACKGROUND Pyramided Bacillus thuringiensis (Bt) crops producing multiple Bt
proteins with different modes of action are widely planted in the United States. Helicoverpa …

Effectiveness of the natural resistance management refuge for Bt-cotton is dominated by local abundance of soybean and maize

B Arends, DD Reisig, S Gundry, AS Huseth… - Scientific Reports, 2021 - nature.com
Genetically engineered crops expressing Bacillus thuringiensis (Bt) Cry toxins have
transformed insect management in maize and cotton, reducing insecticide use and …

Decreased Cry1Ac activation by midgut proteases associated with Cry1Ac resistance in Helicoverpa zea

M Zhang, J Wei, X Ni, J Zhang… - Pest management …, 2019 - Wiley Online Library
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 …