부산대학교 도서관

To purchase or authenticate to the full-text of this article, please visit this link: http://dx.doi.org/10.1111/j.1570-7458.2007.00642.x Byline: Eliseu J.G. Pereira (1), Bruce A. Lang (2), Nicholas P. Storer (3), Blair D. Siegfried (1) Keywords: Ostrinia nubilalis; Bacillus thuringiensis; Bt maize; resistance management; Lepidoptera; Crambidae Abstract: Abstract Evolution of resistance by insect pests is the greatest threat to the continued success of Bacillus thuringiensis (Bt) toxins used in insecticide formulations or expressed by transgenic crop plants such as Cry1F-expressing maize [(Zea mays L.) (Poaceae)]. A strain of European corn borer, Ostrinia nubilalis (Hubner) (Lepidoptera: Crambidae), obtained from field collections throughout the central US Corn Belt in 1996 was selected in the laboratory for resistance to Cry1F by exposure to the toxin incorporated into artificial diet. The selected strain developed more than 3000-fold resistance to Cry1F after 35 generations of selection and readily consumed Cry1F expressing maize tissue; yet, it was as susceptible to Cry1Ab and Cry9C as the unselected control strain. Only a low level of cross-resistance (seven-fold) to Cry1Ac was observed. These lacks of cross-resistance between Cry1F and Cry1Ab suggest that maize hybrids expressing these two toxins are likely to be compatible for resistance management of O. nubilalis. Author Affiliation: (1)Department of Entomology, University of Nebraska, Lincoln, NE 68583, USA, (2)Mycogen Seeds, 301 Campus Drive, Huxley, IA 50124, USA, and (3)Dow AgroSciences LLC, 9330 Zionsville Road, Indianapolis, IN 46268, USA Article History: Accepted: 27 September 2007 Article note: (*) Correspondence: Blair Siegfried, Department of Entomology, 202 Plant Industry Building, University of Nebraska, Lincoln, NE 68583, USA. E-mail: bsiegfried1@unl.edu