1. Insect-resistant cotton?
The reason why insect-resistant cotton is insect-resistant is because after the exogenous Bt gene is integrated into the cotton plant, it can synthesize a Parasporal crystals called delta-endotoxin are a kind of protein crystal. After being swallowed by the larvae of sensitive insects such as Lepidoptera, they are exposed to alkaline conditions in their intestines and the action of enzymes, or simply under alkaline conditions. , Parasporal crystals can be hydrolyzed into toxic peptides and become toxic quickly.
2. Environmental protection
"DNA probes" can very sensitively detect viruses, bacteria and other contamination in the environment, and are not prone to large numbers of deaths due to environmental pollution, and can even Absorb and transform pollutants. Usually, one kind of bacteria can only decompose one kind of hydrocarbon in petroleum. "Super bacteria" successfully cultivated through genetic engineering can decompose a variety of hydrocarbon compounds in petroleum. Some can also swallow and convert heavy metals such as mercury and cadmium, and decompose DDT. and other toxic substances
3. Animal husbandry
Transgenic technology has broad application prospects in animal husbandry. First, the production traits of livestock and poultry can be improved. Through transgenic technology, animals can synthesize certain amino acids themselves, change their growth regulation system, promote their growth performance, improve feed utilization efficiency and shorten the growth cycle.
4. Environmental protection
"DNA probes" can very sensitively detect viruses, bacteria and other contamination in the environment, and are not prone to large numbers of deaths due to environmental pollution, and can even Absorb and transform pollutants. Usually, one kind of bacteria can only decompose one kind of hydrocarbon in petroleum. "Super bacteria" successfully cultivated through genetic engineering can decompose a variety of hydrocarbon compounds in petroleum. Some can also swallow and convert heavy metals such as mercury and cadmium, and decompose DDT. and other toxic substances.
5. Industrial
Industrial applications mainly refer to applications in the food industry, including: improvement of industrial fermented food strains such as yeast and lactic acid bacteria, production of food additives and processing aids, manufacturing health-care ingredients or effective factors that are beneficial to human health, and genetically modified animals and plants carrying genes of different purposes can become a rich resource library for human treatment of various difficult and complicated diseases.
6. In agriculture
Genetically modified biotechnology can speed up the growth of crops, enhance disease resistance, increase yields, enhance adaptability to the environment, and enhance resistance to herbicides and insecticides. agent capabilities. At present, more than 500 kinds of genetically modified plants have entered field trials around the world, but the scope of domestic genetically modified foods is still relatively small.
①Transferring herbicide-resistant genes into planted crops can effectively prevent weeds in the field and protect crops from pesticide damage. At present, many different types of herbicide resistance genes have been cloned from plants and microorganisms.
②Insects are extremely harmful to crop production, but the main method to deal with them is still chemical pesticides. Insect-resistant genes are transferred into crops and pesticides are synthesized from the crops themselves, making the crops themselves insect-resistant, thus reducing the use of chemical pesticides.
③Cloning some stress-resistant genes and transferring them into plants can improve the plant's resistance to drought, low temperature, salt-alkali and other stresses
Reference: Baidu Encyclopedia - Gene Recombination
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Reference: Baidu Encyclopedia - Insect-resistant Cotton
Reference: Baidu Encyclopedia - Transgenic