Magical Genes - Transgenic Plants

Plant transgenic technology means that the target gene isolated from animal, plant or microorganism is transferred to the genome of the plant by various methods to make it stable and give new agronomic traits to the plant, such as insect resistance, disease resistance, and resistance Inverse, high yield, high quality and so on. With the rapid development of modern biotechnology, plant transgenic technology is on the rise. Since the first transgenic plant was obtained in 1983, there have been 35 families of more than 120 plant transgenics. In 1986, the first batch of transgenic plants was approved for field trials. To date, 30 countries have approved thousands of transgenic plants to enter field trials. There are more than 40 plant species involved. The types of transgenic plants grown include: soybeans, corn, cotton, rapeseed, potato, summer squash, and papaya. The industrialization of transgenic plants, especially the industrialization of genetically modified crops, has brought huge economic and social benefits due to increased yield, reduction in the use of pesticides such as herbicides and pesticides, and significant labor savings. Under the support of the national “863” high-tech research and development program and the national scientific and technological breakthroughs, China’s research and development of transgenic plants have made remarkable progress. Some studies have reached the international advanced level. According to statistics from the National Institute of Biotechnology in 1996, there are 47 genetically modified plants that China has invested in research and development, involving 103 types of genes. In recent years, nearly 20 transgenic plants have entered the field trial or environmental release phase. By 1999, the Ministry of Agriculture approved domestically-developed genetically modified plants that can be used for commercial production such as insect-resistant cotton, petunia that changes flower color, ripened tomatoes, sweet peppers that are resistant to viruses, and tomatoes. In recent years, the main achievements in the research and industrialization of transgenic plants in China are as follows: 1. Plant insect-resistant gene engineering Bacillus thuringiensis Bt crystal toxin protein gene is the earliest insecticidal gene. Since the first time in 1987 when China obtained Bt-transgenic tobacco and tomato, cotton, rice, and corn, which have been transformed into Bt genes, have been obtained. In order to solve the problem of severe damage to cotton bollworm in China, under the support of the national "863" project, the Institute of Biotechnology of the Chinese Academy of Agricultural Sciences successfully synthesized and modified the Bt gene, and it was also linked with Jiangsu Academy of Agricultural Sciences and Shanxi Province. The Academy of Agricultural Sciences and other units cooperated to transfer the Bt gene to the main varieties of cotton in the Yangtze River and Yellow River basins in China, and obtained transgenic cotton varieties and strains with high resistance to Helicoverpa armigera. Insect-resistant cotton has an overall pest resistance of more than 80%, and the high yield and adaptability are comparable to those of the local main cultivars. At present, four varieties of insect-resistant cotton have been approved and promoted. The breeding of the insect-resistant cotton with China's independent intellectual property rights and its popularization and application in large areas indicate that the research on transgenic plants in China has entered the stage of industrialization. Simultaneous introduction of two genes with different insecticidal mechanisms into plants can effectively delay the formation of resistance to cotton bollworms, thus increasing the long-lasting insect resistance of insect-resistant cotton. This result further shows the characteristics of China's insect-resistant cotton research, with a broader application prospects. 2. Disease-resistance genetic engineering The Institute of Biotechnology of the Chinese Academy of Agricultural Sciences has successfully synthesized and modified the antibacterial peptide gene from the genus Apodemus, and introduced it into China's potato cultivar Mira, and obtained resistance to disease-enhancing I-III grade. The transgenic strains of bacterial wilt are now approved by the Ministry of Agriculture for environmental release in Sichuan Province. At present, antibacterial peptide genes have been supplied to more than 10 research institutes in China for antibacterial activity against rice bacterial blight, potato soft rot, peanut and tomato bacterial wilt, Chinese cabbage soft rot, citrus bacterial ulcer disease, mulberry and eucalyptus Bacterial wilt, cherry root tuber disease and other anti-bacterial genetic engineering research. In terms of anti-virus genetic engineering, domestic progress has also been very good. Peking University has cloned coat protein genes such as tobacco mosaic virus TMV, cucumber mosaic virus CMV, and potato X virus, as well as coat dwarf virus of rice dwarf virus. The anti-cucumber mosaic virus sweet pepper and tomato have been successfully developed in Yunnan respectively. And Fujian entered the pilot or environmental release. 3. Plant stress-resistance genetic engineering China has made some progress in salt-resistant genetic engineering. We have cloned proline synthase (proA), mountain spinach dehydrogenase (BADH), and mannitol dehydrogenase (mtl). ) and saponin phosphate dehydrogenase (gutD) and other salt-tolerant genes, obtained by genetic transformation of 1% NACL 苜蓿, resistant to 0.8% NACL strawberry and 2% NACL resistant tobacco, these transgenic plants have entered the field Test phase. The Institute of Genetics of the Chinese Academy of Sciences introduced the BADH gene into rice, and the transgenic rice obtained has high salt tolerance and can be established in salt fields. 4. Genetic Engineering of Plant Quality Improvement Peking University has transferred genes encoding essential amino acids to potatoes to obtain potato strains containing high essential amino acids. These strains have been tested in Inner Mongolia and are preparing to enter pilot development. China Agricultural University successfully introduced the high lysine gene into corn, and the obtained lysine content in the transgenic corn was increased by 10% compared with the control. In genetic engineering that controls plant development, more mature technologies delay the study of mature tomatoes. The Huazhong Agricultural University and the Institute of Botany of the Chinese Academy of Sciences have obtained the transgenic plants, respectively. The storage time can be extended by 1-2 months, and some can reach 80 days. In 1997, the Genetic Engineering Safety Committee of the Ministry of Agriculture approved the commercial production of this storage-tolerant tomato. The new storage-resistant tomato varieties cultivated by the China Agricultural University using antisense gene technology have been released to the environment. 5. Plant chloroplast genetic engineering The Institute of Biotechnology of the Chinese Academy of Agricultural Sciences began to study the genetic transformation of plant chloroplasts earlier in the country. In 1996, a tobacco chloroplast genetic transformation system was established, and the Bt gene was successfully introduced into tobacco chloroplasts. The insecticidal effect of transgenic plants was significant.] They also introduced nitrogenase (nifH and nifM), anti-agent (bar), and green fluorescent protein (GFP) genes into tobacco chloroplasts. 6. Plant bioreactors The use of transgenic plants as bioreactors for the production of Pharmaceutical proteins has received increasing attention from various countries. One of the research and exploration hot spots is the use of transgenic plants to produce oral vaccines. Researchers at the Institute of Biotechnology of the Chinese Academy of Agricultural Sciences introduced hepatitis B virus surface antigen genes into potatoes and tomatoes. Feeding mice tested detected high levels of protective antibodies at concentrations sufficient to protect humans. The Institute also conducted research on the use of plant chloroplasts as bioreactors for the production of pharmaceutical proteins. The hepatitis C virus (HCV) antigen gene has been introduced into Chlamydomonas chloroplasts. The use of transgenic plants for the production of oral vaccines can greatly reduce the production costs of vaccines and have a good development prospect in developing countries. The 21st century plant transgenic technology will play an important role in the sustainable development of China's agriculture and the food safety of 1.6 billion people. Judging from the current situation, the development of insect-resistant, herbicide-resistant genetic engineering products is fast, and the research and development of disease-resistant gene engineering needs to be further developed. Genetic engineering such as stress resistance, quality improvement, and growth and development needs to be further breakthroughs in basic research. In any case, China's plant genetic engineering technology system has been initially established and has made gratifying and remarkable progress. There is no limit to the prospect of the development of magical genetic technology.

Our Heterocyclic Compounds has been developing from 2015 year, it is a relatively new class of compounds in our company. Our heterocyclic compounds conducted by a dedicated research and development teams. The R & D team focused on researching heterocyclic compounds, other products are performed by other technical team. Our goal is to catch up with the industry's professional heterocyclic manufacturer. At present our products are mainly composed of pyridine, pyrimidine, thiazole. In addition to our regular products, we accept any form of customized services, to undertake from grams to tons of production. After receiving inquiry, we will give a quotation within 2 working days with coa specifications,If you have special requirements, please provide details in the mail, we will combine the specific requirements and provide an accurate accounting of the costs of the offer. Under normal circumstances, we have the longest production cycle is not more than 45 days.

Heterocyclic Compounds

Heterocyclic Compounds,Cyclopropanecarboxylic Acid,Benzenedithiol Dihydrochloride

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