进口转基因大豆品系检测及分析

用17种大豆品系特异性检测方法对我国进口自美国、巴西、加拿大和阿根廷四个国家的41批转基因大豆进行检测。分析检测结果显示:在41批进口大豆中仅17个品系中的7种批准大豆品系被检出,分别是MON89788、GTS40-3-2、MON87701、MON87708、A2704-12、A5547-127和FG72,检出率分别为90.24%、87.80%、43.90%、41.46%、36.59%、17.07%和2.44%;不同批次样品检出品系不同,其中6批样品检出1种品系,其余样品均能检出2~5种品系;各国大豆检出品系也不同,其中美国检出7种,而巴西、加拿大和阿根廷分别检出6、5和3种;尽管不同国家大豆检出品系和含量不同,但4大转基因大豆出口国均有GTS40-3-2和MON89788两种品系检出,且含量高。期待以上结果为我国进境转基因大豆检测提供参考,并作为进口转基因大豆安全监管的依据。

Event detection and analysis of imported genetically modified soybean

41 batches of soybean imported from the United States, Brazil, Canada and Argentina were tested with the event-specific detection method for 17 genetically modified(GM) soybean events. The analyzed results showed that: out of 17 GM soybean events, only 7 approved ones were detected in all 41 batches of imported soybeans, namely MON89788, GTS40-3-2, MON87701, MON87708, A2704-12, A5547-127 and FG72, with detection rates of 90.24%, 87.80%, 43.90%, 41.46%, 36.59%, 17.07% and 2.44% respectively. In different batches of samples, different kind of GM soybean event were detected, among which, in samples of 6 batches, only 1 event was detected, but in samples of all batches, 2 to 5 kinds of GM soybean events could be detected. In samples from different countries, the detected events were also different, including 7 from detected in American soybean, and 6, 5 and3 from Brazil’s, Canada’s and Argentina’s soybean respectively. Even though different GM soybean events and contents were detected in samples from different countries, GTS-40-3-2 and MON89788 could be detected in soybeans from all 4 countries with high contents. These results could be useful for China to detect and identify imported GM soybeans, and improve supervision of imported GM soybean.