title: Decrease in catalase activity of Folsomia candida fed a Bt rice diet.
abstract: Here we report the effects of three Bt-rice varieties and their non-Bt conventional isolines on biological traits including survival, reproduction, and the activities of three antioxidant enzymes superoxide dismutase, catalase and peroxidase, in the Collembolan, Folsomia candida. The reproduction was significantly lower when fed Kemingdao and Huahui1 than those feeding on their non-GM near-isogenic varieties Xiushui and Minghui63 respectively, this can be explained by the differences of plant compositions depended on variety of rice. The catalase activity of F. candida was significantly lower when fed the Bt-rice variety Kemingdao compared to the near-isogenic non-Bt-rice variety Xiushui. This suggests that some Bt-rice varieties may impose environmental stress to collembolans. We emphasize that changes in activity of antioxidant enzymes of non-target organisms are important in understanding the ecological consequences for organisms inhabiting transgenic Bt-rice plantations.
authors.affiliation: State Key Laboratory of Integrated Management of Pest and Rodents, Institute of Zoology, Chinese Academy of Sciences, 1 Beichen West Road, Chaoyang District, Beijing 100101, China. yuanyy@ioz.ac.cn
authors.forename: Yiyang
authors.initials: Y
authors.lastname: Yuan
authors.forename: Xin
authors.initials: X
authors.lastname: Ke
authors.forename: Fajun
authors.initials: F
authors.lastname: Chen
authors.forename: Paul Henning
authors.initials: PH
authors.lastname: Krogh
authors.forename: Feng
authors.initials: F
authors.lastname: Ge
mesh_terms: D000818:Animals; D000083722:Bacillus thuringiensis Toxins; D001426:Bacterial Proteins / Q000235:genetics / Q000378:metabolism / Q000494:pharmacology*; D002374:Catalase / Q000037:antagonists & inhibitors / Q000378:metabolism*; D015536:Down-Regulation / Q000187:drug effects; D004435:Eating; D004731:Endotoxins / Q000235:genetics / Q000378:metabolism / Q000494:pharmacology*; D006460:Hemolysin Proteins / Q000235:genetics / Q000378:metabolism / Q000494:pharmacology*; D019476:Insect Proteins / Q000037:antagonists & inhibitors / Q000378:metabolism*; D007313:Insecta / Q000187:drug effects / Q000201:enzymology / Q000502:physiology*; D012275:Oryza / Q000235:genetics* / Q000378:metabolism; D030821:Plants, Genetically Modified / Q000235:genetics / Q000378:metabolism; D012098:Reproduction / Q000187:drug effects
chemical_list: D000083722:Bacillus thuringiensis Toxins; D001426:Bacterial Proteins; D004731:Endotoxins; D006460:Hemolysin Proteins; D019476:Insect Proteins; C030956:insecticidal crystal protein, Bacillus Thuringiensis; D002374:Catalase