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  • Title: Detection of genetically modified maize MON810 and NK603 by multiplex and real-time polymerase chain reaction methods.
    Author: Huang HY, Pan TM.
    Journal: J Agric Food Chem; 2004 Jun 02; 52(11):3264-8. PubMed ID: 15161180.
    Abstract:
    In this study, the event-specific primers for insecticide-resistant maize, MON810, and herbicide-tolerance maize, NK603, have been designed. Simplex PCR and multiplex PCR detection method have been developed. The detection limit of the multiplex PCR is 0.5% for MON810 and NK603 in 50 ng of the template for one reaction. Quantitative methods based on real-time quantitative PCR were developed for MON810 and NK603. Plasmid pMulM2 as reference molecules for the detection of MON810 and NK603 was constructed. Quantification range was from 0.5 to 100% in 100 ng of the DNA template for one reaction. The precision of real-time Q-PCR detection methods, expressed as coefficient of variation for MON810 and NK603 varied from 1.97 to 8.01% and from 3.45 to 10.94%, respectively. The range agreed with European interlaboratories test results (25%). According to the results, the methods for quantitative detection of genetically modified maize were acceptable.
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