Abstract
The transgenic glyphosate-tolerant soybean MON87712 event was developed by the agrochemical and agricultural biotechnology company Monsanto (USA) and commercialized in 2013. Due to the absence of matrix-based and genomic DNA-positive reference material for MON87712, it is very difficult to detect and monitor this event. In this study, we developed a recombinant 760-bp linearized plasmid, including 150 bp of the soybean endogenous lectin gene and 610 bp of the exogenous BBX32 gene plus its 3' flanking sequence of MON87712 by In-Fusion cloning technology. In addition, a duplex real-time polymerase chain reaction for the detection of MON87712 and the soybean endogenous lectin gene was established. By using this method, we achieved specific and quantitative detection of MON87712 in 45 other kinds of crops, with a detection limit of 10 copies/μl. This method provides a new technical means for the accurate detection of transgenic soybean MON87712, as well as technical support for the supervision of agricultural transgenic organisms.
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