(Reporter Zhang Yuyi's college student reporter Zhang Caiyi Peng Xiaodong) “Genetically modified foods have been the most thoroughly evaluated and most rigorously managed foods.” Yesterday, the author of the concept of green super rice, an academician of the Chinese Academy of Sciences, and Huazhong Agricultural University Zhang Qifa, director of the State Key Laboratory of Improvement, visited the Peking Lion Rock Forum and for the first time publicly responded to the “Human farmers' safety certification of genetically modified rice was questioned” incident.

GM crops have been planted for 14 years

“The GM crops have been planted on a large area in the world for 14 years. The population of people who eat genetically modified foods exceeds billions of people. There is still no evidence that GM foods are insecure.” Academician Zhang Zhiquan quoted two government censors, The case of approved GMOs listed is explained. "The GMOs and non-GMOs that are approved for marketing are safe and the market-approved antiviral plants are also safe as non-GMO plants."

In addition, Academician Zhang Xuan also mentioned that genetically modified technology can accurately analyze and evaluate itself and can effectively avoid risks. “The popular science and public education of basic knowledge of life science is very important.” The management of scientific norms can provide security for the utilization of genetically modified technology, and the risk assessment of genetically modified technology should be based on traditional techniques.

Safety evaluation lasted 10 years

The research and development work of Huanong's transgenic rice started in 1995. The results of the year passed the results appraisal of the Ministry of Agriculture. The intermediate experiment was started in the same year. The environment was released in 2002 and the production experiment was conducted from 2003 to 2004. The entire safety assessment procedure is based on the requirements of relevant regulations such as the "Regulations on the Administration of Safety of Agricultural Genetically Modified Organisms" and other international guidelines, such as the "Guidelines for the Risk Assessment of Transgenic Plants" of the Codex Alimentarius Commission. The security assessment lasted for 10 years and was finally approved by the Agricultural Genetically Modified Organism Safety Committee.

“Although the experiment is very mature, the contribution of GM rice to humans may not be apparent until 4 or 5 years later.” Talking about the issue of genetically modified food security, Academician Zhang Zhitu explained to everyone through an interpretation of the “mice gavage experiment”. For people weighing 60 kg, the adverse effects of gavage occurred only after consumption of 120 tons of 'Huahui 1', and these rice can be consumed by people weighing 60 kg for 657 years.

"Bugs can't eat, people can eat!"

The new "Bt Shanyou 63" genetically modified rice with a safety certificate can kill insects and control pests. In response to this feature, there are doubts on the Internet that people cannot eat anything they can eat. Can people eat it? Academician Zhang replied affirmatively: The worm cannot eat, people can eat!

"The position of insects and people eating rice is different." Zhang academician explained that insects eat stems, people eat is endosperm, "people's stomach fluid is weakly acidic, there is no receptor bound to Bt toxin in stomach, and The insect's gastric juice is strongly alkaline. After the Bt protein enters the insect's stomach, the digestive system will produce toxins under the action of gastric juice."

“Several years of research have repeatedly confirmed that Bt insecticidal protein is not harmful to mammals, birds, fish and non-target insects.” Academician Zhang Tuo introduced that rice has inherently resistant genes, such as 19 genes resistant to rice planthoppers .

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