A breakthrough was made in the experiment on food production safety and increased production of the Chinese Academy of Sciences.

Original title: Chinese Academy of Sciences food production safety and production increase experiment breakthrough
With the increase of the greenhouse effect, global warming caused by "high temperature stress", pose a serious threat to world food security. Using advanced genetic engineering methods, Guo Fangqing Research Group, Center for Excellence and Innovation in Molecular Plant Science of the Chinese Academy of Sciences and National Key Laboratory of Plant Molecular Genetics, has made a breakthrough in improving plant photosynthing efficiency and yield after more than 6 years of efforts.
April 21, Chen Weihua, a member of the research team, worked in the laboratory. Xinhua News Agency reporter Zhang Jiansong
According to Guo Fangqing researchers, plant cells in the chlorophylate is a place for photosynthic use, high-light conditions or high temperature stress, usually will cause the chlorophylate in the accumulation of reactive oxygen, inhibit the photosynthymion process. The main cause is the rapid degradation of the key protein D1 of the photosynthetic complex PSII in the chlorophynd, and the decrease of the photosynthetic function of the leaves, which in turn leads to a decrease in crop yield.
How to improve the repair efficiency of the photosynthum complex PSII in the chlorophynd under high-light conditions or high temperature pressure, and thus enhance the photosynthing efficiency of plants and improve biomass and yield, is a basic scientific problem and challenging problem that has long troubled scientists in this field.
past studies, scientists have mostly focused on finding solutions from chlorophyle. With the support of the leading project of the Chinese Academy of Sciences, the National Key Research and Development Program of the Ministry of Science and Technology, and the National Natural Science Foundation of China, Guo Fangqing led Chen Weihua, Chen Siwei and other members of the research group to break through the mind-set and make a unique approach.
used advanced genetic engineering to clone and build a new "fusion gene" driven by high-temperature response starters, and to integrate the genomes of a mustard, tobacco and rice. Through genetic transformation, a new D1 protein synthesis pathway with gene expression of cell nucleation was successfully created in three plants, amoeba, tobacco and rice.
" is equivalent to the establishment of a two-path mechanism for the synthesis of plant cell D1 protein. One pathway is the natural chlorophynd pathway, and the other is the nucleus pathway created by genetic engineering. By increasing the synthesis pathway of plant cell nucleus source D1, D1 is supplemented to plants, thus improving plant high temperature resistance and photosynthesis efficiency, and increasing biomass and yield. Guo said.
studies show that the modified strains of amoeba, tobacco and rice with "D1 protein synthesis two-way" have significantly increased their effects compared to wild ones in terms of high temperature resistance, photosynthesis efficiency, carbon dioxide assynsis rate and biomass. The scientific research team verified the yield of the improved strains of rice genetic engineering for many years at songjiang in Shanghai and Sanya Lingshui breeding base in Hainan, respectively, and the yield of rice increased by between 8.1% and 21.0%.
21st, the international authoritative academic journal Nature Plant published relevant research papers.
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