Tags

Type your tag names separated by a space and hit enter

Susceptibility of Nebraska Western Corn Rootworm (Coleoptera: Chrysomelidae) Populations to Bt Corn Events.
J Econ Entomol. 2015 Apr; 108(2):742-51.JE

Abstract

Transgenic plants have been widely adopted by growers to manage the western corn rootworm, Diabrotica virgifera virgifera LeConte, in field corn. Because of reduced efficacy in some Nebraska fields after repeated use of Cry3Bb1-expressing hybrids, single plant bioassays were conducted in 2012 and 2013 to characterize the susceptibility of western corn rootworm populations to the rootworm-active proteins Cry3Bb1, mCry3A, and Cry34/35Ab1. Results demonstrate that there are heritable differences in susceptibility of Nebraska western corn rootworm populations to rootworm-active Bt traits. 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 Cry3Bb1 and mCry3A. There was no apparent cross-resistance between Cry34/35Ab1 and either Cry3Bb1 or mCry3A. The potential implications of these results on current and future corn rootworm management strategies are discussed.

Links

Publisher Full Text (DOI)

Authors+Show Affiliations

Wangila DS
Department of Entomology, University of Nebraska-Lincoln, Lincoln, NE 68583.
Gassmann AJ
Department of Entomology, Iowa State University, 18 Insectary, Ames, IA 50011.
Petzold-Maxwell JL
Department of Entomology, Iowa State University, 18 Insectary, Ames, IA 50011. Current address: Department of Biology, 100 Wartburg Blvd., Wartburg College, Waverly, IA 50677.
French BW
North Central Agricultural Research Laboratory, USDA-ARS, Brookings, SD 57006.
Meinke LJ
Department of Entomology, University of Nebraska-Lincoln, Lincoln, NE 68583. Corresponding author, e-mail: lmeinke1@unl.edu.

MeSH

AnimalsBacillus thuringiensis ToxinsBacterial ProteinsColeopteraEndotoxinsHemolysin ProteinsInsecticide ResistanceInsecticidesLarvaNebraskaPlants, Genetically ModifiedZea mays

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.

Language

eng

PubMed ID

26470186

Citation

Wangila, David S., et al. "Susceptibility of Nebraska Western Corn Rootworm (Coleoptera: Chrysomelidae) Populations to Bt Corn Events." Journal of Economic Entomology, vol. 108, no. 2, 2015, pp. 742-51.
Wangila DS, Gassmann AJ, Petzold-Maxwell JL, et al. Susceptibility of Nebraska Western Corn Rootworm (Coleoptera: Chrysomelidae) Populations to Bt Corn Events. J Econ Entomol. 2015;108(2):742-51.
Wangila, D. S., Gassmann, A. J., Petzold-Maxwell, J. L., French, B. W., & Meinke, L. J. (2015). Susceptibility of Nebraska Western Corn Rootworm (Coleoptera: Chrysomelidae) Populations to Bt Corn Events. Journal of Economic Entomology, 108(2), 742-51. https://doi.org/10.1093/jee/tou063
Wangila DS, et al. Susceptibility of Nebraska Western Corn Rootworm (Coleoptera: Chrysomelidae) Populations to Bt Corn Events. J Econ Entomol. 2015;108(2):742-51. PubMed PMID: 26470186.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Susceptibility of Nebraska Western Corn Rootworm (Coleoptera: Chrysomelidae) Populations to Bt Corn Events. AU - Wangila,David S, AU - Gassmann,Aaron J, AU - Petzold-Maxwell,Jennifer L, AU - French,B Wade, AU - Meinke,Lance J, Y1 - 2015/02/05/ PY - 2014/07/18/received PY - 2014/12/03/accepted PY - 2015/10/16/entrez PY - 2015/10/16/pubmed PY - 2015/12/23/medline KW - Bacillus thuringiensis KW - Diabrotica virgifera virgifera KW - evolution KW - genetically modified crop KW - resistance management SP - 742 EP - 51 JF - Journal of economic entomology JO - J Econ Entomol VL - 108 IS - 2 N2 - Transgenic plants have been widely adopted by growers to manage the western corn rootworm, Diabrotica virgifera virgifera LeConte, in field corn. Because of reduced efficacy in some Nebraska fields after repeated use of Cry3Bb1-expressing hybrids, single plant bioassays were conducted in 2012 and 2013 to characterize the susceptibility of western corn rootworm populations to the rootworm-active proteins Cry3Bb1, mCry3A, and Cry34/35Ab1. Results demonstrate that there are heritable differences in susceptibility of Nebraska western corn rootworm populations to rootworm-active Bt traits. 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 Cry3Bb1 and mCry3A. There was no apparent cross-resistance between Cry34/35Ab1 and either Cry3Bb1 or mCry3A. The potential implications of these results on current and future corn rootworm management strategies are discussed. SN - 0022-0493 UR - https://www.unboundmedicine.com/medline/citation/26470186/Susceptibility_of_Nebraska_Western_Corn_Rootworm__Coleoptera:_Chrysomelidae__Populations_to_Bt_Corn_Events_ DB - PRIME DP - Unbound Medicine ER -