†Pioneer Hi-Bred Int., Department of Research Specialists, Johnston, IA 501131, USA
Molecular characterization of a strain-specific repeated DNA sequence in the fall armyworm Spodoptera frugiperda (Lepidoptera: Noctuidae)
Version of Record online: 18 DEC 2007
Insect Molecular Biology
Volume 3, Issue 2, pages 123–130, May 1994
How to Cite
Lu, Y.-J., Kochert, G. D., Isenhour, D. J. and Adang, M. J. (1994), Molecular characterization of a strain-specific repeated DNA sequence in the fall armyworm Spodoptera frugiperda (Lepidoptera: Noctuidae). Insect Molecular Biology, 3: 123–130. doi: 10.1111/j.1365-2583.1994.tb00159.x
- Issue online: 18 DEC 2007
- Version of Record online: 18 DEC 2007
- Received 3 February 1994; accepted 30 March 1994
- repetitive DNA;
- fall armyworm;
- Spodoptera frugiperda.
The fall armyworm moth, Spodoptera frugiperda, is a migratory species composed of sympatric corn and rice strains. The strains are indistinguishable in morphology but can be recognized by molecuiar markers. We have cloned and characterized seven monomer units of a repeated DNA sequence, called FR, which is found exclusively in the genome of the rice strain individuals. The 189 bp FR units are tandemly organized in arrays longer than 30 kb. Female individuals possess over 100-fold more of the FR sequence than male individuals. The repeated sequence is not methylated at GGCC sites, and shows high sequence similarity among repeat units.