Frequency of Cry1F Non-Recessive Resistance Alleles in North Carolina Field Populations of Spodoptera frugiperda (Lepidoptera: Noctuidae)
文献类型： 外文期刊
作者： Li, Guoping 1 ; Reisig, Dominic 1 ; Miao, Jin 1 ; Gould, Fred 3 ; Huang, Fangneng 4 ; Feng, Hongqiang 2 ;
作者机构： 1.N Carolina State Univ, Dept Entomol, Vernon G James Res & Extens Ctr, 207 Res Stn Rd, Plymouth, NC 27962 USA
2.Henan Acad Agr Sci, Henan Key Lab Crop Pest Control, MOAS Reg Key Lab Crop IPM Southern Part Northern, Inst Plant Protect, Zhengzhou 450002, Peoples R China
3.N Carolina State Univ, Dept Entomol, Raleigh, NC 27695 USA
4.Louisiana State Univ, Ctr Agr, Dept Entomol, Baton Rouge, LA 70803 USA
期刊名称：PLOS ONE （ 影响因子：3.24； 五年影响因子：3.788 ）
ISSN： 1932-6203
年卷期： 2016 年 11 卷 4 期
页码：
收录情况： SCI
摘要： Fall armyworm, Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae), is a target species of transgenic corn (Zea mays L.) that expresses single and pyramided Bacillus thuringiensis (Bt) toxin. In 2014, S. frugiperda were collected from a light trap in North Carolina, and a total of 212 F-1/F-2 isofemale lines of S. frugiperda were screened for resistance to Bt and non-Bt corn. All of the 212 isolines were susceptible to corn tissue expressing Cry1A.105 + Cry2Ab, Cry1F + Cry1A.105 + Cry2Ab, and Cry1F + Cry1Ab + Vip3Aa20. Growth rate bioassays were performed to isolate non-recessive Bt resistance alleles. Seven individuals out of the 212 isofemale lines carried major non-recessive alleles conferring resistance to Cry1F. A pooled colony was created from the seven individuals. This colony was 151.21 times more resistant to Cry1F than a known-susceptible population and was also resistant to Cry1A.105, but was not resistant to Cry2Ab and Vip3Aa20. The results demonstrate that field populations of S. frugiperda collected from North Carolina are generally susceptible to Cry1F, but that some individuals carry resistant alleles. The data generated in this study can be used as baseline data for resistance monitoring.
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