Journal of Plant Biotechnology

The Korean Society of Plant Biotechnology (한국식물생명공학회)
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Characterization, detection and identification of transgenic chili pepper harboring coat protein gene that enhances resistance to cucumber mosaic virus

  • Seo, Sang-Gyu (Department of Environmental Horticulture, The University of Seoul) ;
  • Kim, Ji-Seong (Department of Environmental Horticulture, The University of Seoul) ;
  • Jeon, Seo-Bum (Department of Environmental Horticulture, The University of Seoul) ;
  • Shin, Mi-Rae (Department of Environmental Horticulture, The University of Seoul) ;
  • Kang, Seung-Won (Department of Applied Plant Science, College of Industrial Science, Chung-Ang University) ;
  • Lee, Gung-Pyo (Department of Applied Plant Science, College of Industrial Science, Chung-Ang University) ;
  • Hong, Jin-Sung (Plant Virus Bank, Division of Environmental and Life Science, Seoul Women's University) ;
  • Harn, Chee-Hark (Biotechnology Institute, Nongwoo Bio Co., Ltd) ;
  • Ryu, Ki-Hyun (Plant Virus Bank, Division of Environmental and Life Science, Seoul Women's University) ;
  • Park, Tae-Sung (Rural Development Administration) ;
  • Kim, Sun-Hyung (Department of Environmental Horticulture, The University of Seoul)
  • Published : 2009.12.31
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Abstract

Previously, two events (H15 and B20) of transgenic pepper (Capsicum annuum L.) that enhanced resistance to Cucumber mosaic virus (CMV) by the introduction of CMV coat protein (CP) gene were constructed. Presently, a single copy number of the CP gene was revealed in H15 and B20 by Southern blot. To predict possible unintended effects due to transgene insertion in an endogenous gene, we carried out sequencing of the 5'-flanking region of the CP gene and a Blastbased search. The results revealed that insertion of the transgene into genes encoding putative proteins may occur in the H15 and B20 transgenic event. Mutiplex polymerase chain reaction (PCR) for simultaneous detection and identification of transgenic pepper was conducted with a set of nine primers. Both transgenic event were differentiated from non-transgenic event by the presence of 267 bp and 430 bp PCR products indicative of CP gene specific primer pairs and primer pairs targeting the CP gene and 35S promoter. H15 and B20 uniquely possessed a 390 bp and 596 bp PCR product, respectively. The presence of a 1115 bp product corresponding to intrinsic pepper actin gene confirmed the use of pepper DNA as the PCR template. The primer set and PCR conditions used presently may allow the accurate and simple identification of CMV resistant transgenic pepper.

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