Journal of Plant Biotechnology

The Korean Society of Plant Biotechnology (한국식물생명공학회)
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Development of a multiplex PCR method for identification of four genetically modified maize lines and its application in living modified organism identification

  • Park, Jin Ho (Division of Ecological Safety, National Institute of Ecology) ;
  • Seol, Min-A (Division of Ecological Safety, National Institute of Ecology) ;
  • Eum, Soon-Jae (Division of Ecological Safety, National Institute of Ecology) ;
  • Kim, Il Ryong (Division of Ecological Safety, National Institute of Ecology) ;
  • Lim, Hye Song (Division of Ecological Safety, National Institute of Ecology) ;
  • Lee, Jung Ro (Division of Ecological Safety, National Institute of Ecology) ;
  • Choi, Wonkyun (Division of Ecological Safety, National Institute of Ecology)
  • Received : 2020.09.26
  • Accepted : 2020.10.15
  • Published : 2020.12.31
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Abstract

Advances in biotechnology have led to progress in crop genetic engineering to improve agricultural productivity. The use of genetically modified (GM) crops has increased, as have consumers' and regulators' concerns about the safety of GM crops to human health, and ecological biodiversity. As such, the identification of GM crops is a critical issue for developers and distributors, and their labeling is mandatory. Multiplex polymerase chain reaction (PCR) has been developed and its use validated for the detection and identification of GM crops in quarantine. Herein, we established a simultaneous detection method to identify four GM maize events. Event-specific primers were designed between the junction region of transgene and genome of four GM maize lines, namely 5307, DAS-40278-9, MON87460, and MON87427. To verify the efficiency and accuracy of the multiplex PCR we used specificity analysis, limit of detection evaluation, and mixed certified reference materials identification. The multiplex PCR method was applied to analyze 29 living, modified maize volunteers collected in South Korea in 2018 and 2019. We performed multiplex PCR analysis to identify events and confirmed the result by simplex PCR using each event-specific primer. As a result, rather than detecting each event individually, the simultaneous detection PCR method enabled the rapid analysis of 29 GM maize volunteers. Thus, the novel multiplex PCR method is applicable for living modified organism volunteer identification.

Keywords

Acknowledgement

This work was supported by a grant from the National Institute of Ecology (NIE), funded by the Ministry of Environment (MOE) of the Republic of Korea (NIE-A-2020-06, NIE-A-2020-11).

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