Taxus mairei
Taxus media, also known as yew, latin name: taxus media, yew is a long green coniferous plants, is listed as the world's rare and endangered species, is a national first-class protected plants, known as "plant gold" said. Taxol extracted from it has high anticancer activity and can be used to treat various cancers. The American Institute for Cancer Research believes paclitaxel is the most effective cancer drug for humans in the years to come. Taxus media is a hybrid variety, which has the advantages of fast growth speed, high taxol content and strong adaptability to environment. It is an excellent tree species for improving ecological environment and constructing beautiful mountains in the new century. At the same time in horticultural engineering, landscaping also has a very broad development scene. The American Cancer Institute (NCI) believes that paclitaxel extracted from the inner bark, roots and branches of Taxus chinensis has high anticancer activity and is the most effective anticancer drug for humans in the next 20 years. Ecological value Taxus mandiensis has the characteristics of developed lateral roots, fast growth speed and strong adaptability to the environment. It can be widely used in the construction of soil and water conservation forests and water conservation forests. It is one of the preferred tree species for national key ecological construction projects. The beautiful tree shape and the red and green color matching of the ripe fruit add a beautiful scenery to the urban landscape art of China. Compared with Chinese Taxus, Taxol content of Taxus media is 4-6 times higher than that of Chinese Taxus, and survival rate of Taxus media is much higher than that of Chinese Taxus. And after collecting branches and leaves to extract paclitaxel, it can still grow vigorously and can be recycled, which is incomparable to domestic Taxus.
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Rapid propagation of Taxus mairei
Because it contains extractable anti-cancer drugs, Taxus mairei has become an important medicinal material in the country. The demand for seedlings is increasing. It is difficult to meet the needs of production by traditional cutting propagation alone. Generally, only one batch can be cultivated in a year, while at least 5-6 batches can be cultivated by using non-test-tube cloning technology, and the survival rate and the quality of seedlings are greatly improved. What is more important is that the fast-growing seedlings can be transplanted, planted and developed throughout the year. Generally, 3-5 cm long leafy branches are used as in vitro materials.
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Clone yew "squeeze" to produce anti-cancer king
Professor Sichuan University demonstrated the unique transgenic cloning technology of plants, and the next step is to focus on anti-cancer plants. "We have successfully cloned two plants with different genes using cloning transgenic technology, and the next step is to apply this technology to the cloning of the anticancer drug paclitaxel." A few days ago, Professor Wang Li of the Plant Research Office of the School of Life Sciences of Sichuan University demonstrated to reporters the cloning and transgenic technology that is rarely known to outsiders. A plant was cloned from the leaves. In the laboratory, Professor Wang pointed to a green plant about 20 centimeters high and said: "
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