Abstract
GM crops detection commonly uses PCR method currently. It takes too long and needs thermal cycling instruments with accurate temperature control, so it is not suitable for field testing. In this study, event-specific detection method for transgenic insect resistance rice Kefeng 6 and its derivates based on real-time fluorescent recombinase ploymerase amplification (RPA) was established. According to the integration junction sequence of Kefeng 6, we designed and screened a set of RPA primers and probes combination which fit for RPA assays. The results showed that 500 copies of the target molecules in samples could be detected stablely and specifically by the method. The method can finish detection in 10 to 20 min, simplifying the test procedure by real-time fluorescence detection. Detection time was greatly shortened comparing with the conventional PCR detection which needed several hours. It has great application value for field transgenic detection using lithium battery-powered portable apparatus.
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