Bioengineering will also play an important role in agriculture. By 2020, 60% of agricultural varieties will be genetically engineered. The start of agricultural bio-engineering was in 1985 when it was a very new technology. At present, there are five major categories of rice, wheat, corn, cotton and oil crops, vegetables, fruits, and timber. Agricultural bioengineering is progressing rapidly. The first thing to do is plant antiviral. For example, the degradation of the grass variety caused by the viral disease of plants, the degradation of the potato, the wheat yellow dwarf disease, etc., can be solved by genetic engineering. The virus has its own genetic material. When the virus enters the plant cells, it rapidly reproduces, and the number reaches 105. The plant cells die, and the virus then spreads to nearby plant cells. What bioengineering does in plants is to reorganize the genetic code of the virus into the plant's body. The plant has the genetic material of the virus. If the virus is used to infect this plant, the virus will think that its partner is already in the plant and will no longer infect the plant. This is a different point from the animal's immune form. According to this characteristic of the virus, some vegetable farmers sprayed some weak virus on the West Cotton Cotton, in exchange for a small loss in exchange for a large harvest. Followed by pest problems. Insect pests are the enemy of agriculture. Historically, pesticides have been used as a method of prevention and control, and pesticides have also caused pollution problems in agricultural products and the environment. A biological control method is now used - Bacillus thuringiensis spraying crops. This strain contains Bacillus thuringiensis toxin, which has been poisoned by pests that have not decomposed this toxic protein. At present, research is being conducted on the use of genetic engineering methods to remove the genetic material that encodes the toxic protein in the bacteria, and then grouping it into plants. The bacteria produce poisonous proteins in the plants, because the insects cannot digest the leaves of the plants. Instead of eating this kind of leaf, the purpose of protecting the plant is to eat a few larvae of this kind of leaf and soon die. Third, remove impurities. Bioengineering can make plants produce herbicide-resistance, which brings great benefits to agriculture. Wheat, rice, and tomatoes can all become herbicide-tolerant transgenic plants, which save labor and increase yield. Fourth, genetic engineering can also improve the freshness of fruits. The principle is mainly to destroy the cell wall cellulase. This can ensure that the kiwi, peach, and tomato are mature but not soft, and they are extremely powerful in transportation. When the fruit matures, it produces a lot of ethylene, and ethylene induces many gene expressions, one of which is the decomposition of the cell wall of the fruit, which causes the fruit to become soft. Now, through genetic engineering, genes that cause the breakdown of the cell wall will be destroyed and the fruit will not produce ethylene. After ripening, the tomato can be hung on the plant for 3 months without becoming soft. This greatly facilitates the transportation of fruit, and after adding a bit of ethylene to the market, the fruit will soon become soft. U.S. genetic fruits have entered the market, such as tomatoes. But with it, there are some social problems. In the United States, because people do not know what is going on with genetically modified fruits and vegetables and see that tomatoes are hard, they think that biologists have changed the genetic material of tomatoes.
More and more people raise ornamental fish,fish tank also developed from the past single appearance to a variety of tall and tall now,put a beautiful big fish tank in the living room,you can see every day as soon as you enter the door,the troubles of the day will go along with it. Whether fresh water tank or sea water tank,the process of fish farming will encounter such problems,such as poor water quality,turbidity, water plants withered yellow,fish and shrimp sick, and so on,this time it is necessary to take corresponding measures to save the aquarium ecosystem.
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