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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
J Plant Biotechnol 2020;47:309-315
Published online December 31, 2020
© 2020 The Korean Society for Plant Biotechnology.

Jin Ho Park ・Min-A Seol ・Soon-Jae Eum・Il Ryong Kim ・Hye Song Lim・Jung Ro Lee ・Wonkyun Choi

Division of Ecological Safety, National Institute of Ecology, Seocheon 33657, Republic of Korea
Correspondence to: e-mail:

Jin Ho Park and Min-A Seol are co-first authors who have contributed equally to this work.
Received September 26, 2020; Revised October 12, 2020; Accepted October 15, 2020.
cc This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License ( which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
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. Eventspecific 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 eventspecific 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 : Living Modified Organism, LM Maize Detection, Multiplex PCR

December 2020, 47 (4)
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Funding Information
  • National Institute of Ecology
      NIE-A-2020-06, NIE-A-2020-11
  • Ministry of Environment
  • CrossMark
  • Crossref TDM