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Article
Effects of Transgenic Bacillus thuringiensis Maize Grain on B. thuringiensis- Susceptible Plodia interpunctella (Lepidoptera: Pyralidae)
Journal of Economic Entomology,
  • Kristopher L. Giles, Oklahoma State University - Main Campus
  • Richard L. Hellmich, Iowa State University
  • Cort T. Iverson, Iowa State University
  • Leslie C. Lewis, Iowa State University
Document Type
Article
Disciplines
Publication Date
6-1-2000
DOI
10.1603/0022-0493-93.3.1011
Abstract
Percentage survivorship, developmental time, adult body length, and sex ratio of Plodia interpunctella (Hu¨ bner) reared on Þeld-produced grain from sixteen cultivars of maize, Zea mays L., including several transgenic Bacillus thuringiensis (Bt) Berliner hybrids and selected non-Bt isolines, were evaluated under laboratory conditions. Compared with isolines, development was delayed and survivorship reduced for P. interpunctella reared on grain from transgenic hybrids with the CaMV/35s promoter that express Cry1Ab protein. Similarly, compared with non-Bt hybrids, a transgenic hybrid with the CaMV/35s promoter that expresses Cry9C protein delayed development, decreased survivorship, and caused reductions in adult body length of P. interpunctella. In contrast, no signiÞcant differences in P. interpunctella developmental times or survivorship were observed between transgenic hybrids with the PEPC promoter expressing Cry1Ab and their isolines. Additionally, developmental time, survivorship, and adult body length were similar between P. interpunctella reared on a transgenic hybrid with the CaMV/35s promoter expressing Cry1Ac and non-Bt hybrids. Our data demonstrate that transgenic Bt maize grain, especially grain from hybrids with the CaMV/35s promoter expressing Cry1Ab or Cry9C, can signiÞcantly affect B. thuringiensis-susceptible P. interpunctella populations up to 4 or 5 mo after harvest.
Comments

This article is from Journal of Economic Entomology 93 (2000);1011-1016; doi:10.1603/0022-0493-93.3.1011

Rights
Works produced by employees of the U.S. Government as part of their official duties are not copyrighted within the U.S. The content of this document is not copyrighted.
Copyright Owner
Entomological Society of America
Language
en
File Format
application/pdf
Citation Information
Kristopher L. Giles, Richard L. Hellmich, Cort T. Iverson and Leslie C. Lewis. "Effects of Transgenic Bacillus thuringiensis Maize Grain on B. thuringiensis- Susceptible Plodia interpunctella (Lepidoptera: Pyralidae)" Journal of Economic Entomology, Vol. 93 Iss. 3 (2000) p. 1011 - 1016
Available at: http://works.bepress.com/richard_hellmich/91/