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Jennifer L. Petzold-Maxwell

Researcher at Iowa State University

Publications -  14
Citations -  1370

Jennifer L. Petzold-Maxwell is an academic researcher from Iowa State University. The author has contributed to research in topics: Western corn rootworm & Genetically modified maize. The author has an hindex of 10, co-authored 14 publications receiving 1258 citations. Previous affiliations of Jennifer L. Petzold-Maxwell include Wartburg College.

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Field-evolved resistance to Bt maize by western corn rootworm.

TL;DR: This is the first report of field-evolved resistance to a Bt toxin by the western corn rootworm and by any species of Coleoptera, and suggests that improvements in resistance management and a more integrated approach to the use of Bt crops may be necessary.
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Field-evolved resistance by western corn rootworm to multiple Bacillus thuringiensis toxins in transgenic maize

TL;DR: It is shown that cross-resistance exists between Cry3Bb1 maize and mCry3A maize and is associated with severe injury to Bt maize in farmers’ fields, illustrating the potential of insects to develop resistance rapidly when Bt crops do not achieve a high dose of Bt toxin.
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Susceptibility of Nebraska Western Corn Rootworm (Coleoptera: Chrysomelidae) Populations to Bt Corn Events

TL;DR: Proportional survival and corrected survival data coupled with field histories collectively support the conclusion that a level of field resistance to Cry3Bb1 has evolved in some Nebraska populations in response to selection pressure and that cross-resistance exists between Cry3 Bb1 and mCry3A.
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Western corn rootworm and Bt maize: challenges of pest resistance in the field

TL;DR: Effectively dealing with the challenge of field-evolved resistance to Bt maize by western corn rootworm will require better adherence to the principles of integrated pest management.
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Adaptation by Western Corn Rootworm (Coleoptera: Chrysomelidae) to Bt Maize: Inheritance, Fitness Costs, and Feeding Preference

TL;DR: The resistant strain developed faster and had increased survival on Bt maize relative to a susceptible strain, and results from reciprocal crosses of the resistant and susceptible strains indicated that inheritance of resistance was nonrecessive.