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Western Corn Rootworm (Coleoptera: Chrysomelidae) Larval Movement in eCry3.1Ab+mCry3A Seed Blend Scenarios.
J Econ Entomol. 2016 08; 109(4):1834-45.JE

Abstract

Corn fields planted with plant-incorporated Bacillus thuringiensis (Bt) proteins must have a portion of the field planted with non-Bt, isoline, plants that serve as a refuge for susceptible insects. In the Corn Belt, refuge seeds are now blended in the bag with Bt seeds for corn hybrids containing two or more toxins targeted toward the western corn rootworm, Diabrotica virgifera virgifera LeConte. Syngenta's corn hybrid, Agrisure Duracade, containing the eCry3.1Ab (event 5307) and mCry3a (event MIR604) rootworm-targeted toxins were registered as a seed blend in 2014. Western corn rootworm larval movement between the refuge plants and the Duracade plants was assessed to determine western corn rootworm survival and amount of root damage on these plants when planted in all possible seed blend scenarios. In this study, western corn rootworm larvae moved between isoline and Bt plants and adult survival was greater on Bt plants if movement from a neighboring infested isoline plant had occurred. However, root damage to these Bt plants did not reach economic levels. The low numbers of western corn rootworm larvae that did move from an infested Bt plant to an isoline plant could potentially select for resistance if they survived to adulthood.

Links

Publisher Full Text (DOI)

Authors+Show Affiliations

Zukoff SN
Southwest Research and Extension Center, Kansas State University, 4500 Mary St., Garden City, KS 67846 (snzukoff@ksu.edu; azukoff@ksu.edu), snzukoff@ksu.edu.
Zukoff AL
Southwest Research and Extension Center, Kansas State University, 4500 Mary St., Garden City, KS 67846 (snzukoff@ksu.edu; azukoff@ksu.edu).
Geisert RW
USDA-ARS, 1503 S. Providence, Research PK, Columbia, MO 65211 (rwg5h8@mail.missouri.edu), and.
Hibbard BE
USDA-ARS, 205 Curtis Hall, University of Missouri, Columbia, MO 65211 (Bruce.Hibbard@ars.usda.gov).

MeSH

Animal DistributionAnimalsBacillus thuringiensisBacillus thuringiensis ToxinsBacterial ProteinsColeopteraEndotoxinsFeeding BehaviorHemolysin ProteinsInsecticide ResistanceLarvaLongevityMissouriMotor ActivityPest Control, BiologicalPlant RootsPlants, Genetically ModifiedSeedsZea mays

Pub Type(s)

Journal Article

Language

eng

PubMed ID

27190042

Citation

Zukoff, Sarah N., et al. "Western Corn Rootworm (Coleoptera: Chrysomelidae) Larval Movement in eCry3.1Ab+mCry3A Seed Blend Scenarios." Journal of Economic Entomology, vol. 109, no. 4, 2016, pp. 1834-45.
Zukoff SN, Zukoff AL, Geisert RW, et al. Western Corn Rootworm (Coleoptera: Chrysomelidae) Larval Movement in eCry3.1Ab+mCry3A Seed Blend Scenarios. J Econ Entomol. 2016;109(4):1834-45.
Zukoff, S. N., Zukoff, A. L., Geisert, R. W., & Hibbard, B. E. (2016). Western Corn Rootworm (Coleoptera: Chrysomelidae) Larval Movement in eCry3.1Ab+mCry3A Seed Blend Scenarios. Journal of Economic Entomology, 109(4), 1834-45. https://doi.org/10.1093/jee/tow046
Zukoff SN, et al. Western Corn Rootworm (Coleoptera: Chrysomelidae) Larval Movement in eCry3.1Ab+mCry3A Seed Blend Scenarios. J Econ Entomol. 2016;109(4):1834-45. PubMed PMID: 27190042.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Western Corn Rootworm (Coleoptera: Chrysomelidae) Larval Movement in eCry3.1Ab+mCry3A Seed Blend Scenarios. AU - Zukoff,Sarah N, AU - Zukoff,Anthony L, AU - Geisert,Ryan W, AU - Hibbard,Bruce E, Y1 - 2016/05/17/ PY - 2015/12/10/received PY - 2016/02/20/accepted PY - 2016/5/19/entrez PY - 2016/5/18/pubmed PY - 2017/8/24/medline KW - Bacillus thuringiensis KW - Bt resistance KW - Diabrotica virgifera virgifera KW - insect resistance management SP - 1834 EP - 45 JF - Journal of economic entomology JO - J Econ Entomol VL - 109 IS - 4 N2 - Corn fields planted with plant-incorporated Bacillus thuringiensis (Bt) proteins must have a portion of the field planted with non-Bt, isoline, plants that serve as a refuge for susceptible insects. In the Corn Belt, refuge seeds are now blended in the bag with Bt seeds for corn hybrids containing two or more toxins targeted toward the western corn rootworm, Diabrotica virgifera virgifera LeConte. Syngenta's corn hybrid, Agrisure Duracade, containing the eCry3.1Ab (event 5307) and mCry3a (event MIR604) rootworm-targeted toxins were registered as a seed blend in 2014. Western corn rootworm larval movement between the refuge plants and the Duracade plants was assessed to determine western corn rootworm survival and amount of root damage on these plants when planted in all possible seed blend scenarios. In this study, western corn rootworm larvae moved between isoline and Bt plants and adult survival was greater on Bt plants if movement from a neighboring infested isoline plant had occurred. However, root damage to these Bt plants did not reach economic levels. The low numbers of western corn rootworm larvae that did move from an infested Bt plant to an isoline plant could potentially select for resistance if they survived to adulthood. SN - 1938-291X UR - https://www.unboundmedicine.com/medline/citation/27190042/Western_Corn_Rootworm__Coleoptera:_Chrysomelidae__Larval_Movement_in_eCry3_1Ab+mCry3A_Seed_Blend_Scenarios_ DB - PRIME DP - Unbound Medicine ER -
Grapherence [↓2]

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