title: No impact of transgenic cry1C rice on the rove beetle Paederus fuscipes, a generalist predator of brown planthopper Nilaparvata lugens.
abstract: T1C-19 is newly developed transgenic rice active against lepidopteran pests, and expresses a synthesized cry1C gene driven by the maize ubiquitin promoter. The brown planthopper, Nilaparvata lugens, is a major non-target pest of rice, and the rove beetle (Paederus fuscipes) is a generalist predator of N. lugens nymphs. As P. fuscipes may be exposed to the Cry1C protein through preying on N. lugens, it is essential to assess the potential effects of transgenic cry1C rice on this predator. In this study, two experiments (a direct feeding experiment and a tritrophic experiment) were conducted to evaluate the ecological risk of cry1C rice to P. fuscipes. No significant negative effects were observed in the development, survival, female ratio and body weight of P. fuscipes in both treatments of direct exposure to elevated doses of Cry1C protein and prey-mediated exposure to realistic doses of the protein. This indicated that cry1C rice had no detrimental effects on P. fuscipes. This work represents the first study of an assessment continuum for the effects of transgenic cry1C rice on P. fuscipes. Use of the rove beetle as an indicator species to assess potential effects of genetically modified crops on non-target arthropods is feasible.
authors.affiliation: College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China.
authors.forename: Jiarong
authors.initials: J
authors.lastname: Meng
authors.affiliation: College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China.
authors.forename: Juma Ibrahim
authors.initials: JI
authors.lastname: Mabubu
authors.affiliation: College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China.
authors.forename: Yu
authors.initials: Y
authors.lastname: Han
authors.affiliation: College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China.
authors.forename: Yueping
authors.initials: Y
authors.lastname: He
authors.affiliation: College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China.
authors.forename: Jing
authors.initials: J
authors.lastname: Zhao
authors.affiliation: College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China.
authors.forename: Hongxia
authors.initials: H
authors.lastname: Hua
authors.affiliation: College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China.
authors.forename: Yanni
authors.initials: Y
authors.lastname: Feng
authors.affiliation: College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China.
authors.forename: Gang
authors.initials: G
authors.lastname: Wu
mesh_terms: D000818:Animals; D001413:Bacillus thuringiensis / Q000235:genetics; D001517:Coleoptera / Q000235:genetics / Q000472:pathogenicity; D018556:Crops, Agricultural / Q000235:genetics; D004731:Endotoxins / Q000235:genetics*; D006430:Hemiptera / Q000235:genetics / Q000472:pathogenicity; D009758:Nymph / Q000235:genetics / Q000472:pathogenicity; D012275:Oryza / Q000235:genetics* / Q000254:growth & development / Q000469:parasitology; D010572:Pest Control, Biological; D030821:Plants, Genetically Modified / Q000235:genetics* / Q000254:growth & development / Q000469:parasitology
chemical_list: D004731:Endotoxins