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Transgenic mustard can reduce soil pollution
In a field planting trial conducted in California, the transgenic Indian mustard successfully absorbed excess selenium in the soil. The scientist responsible for the study said that this is the first field experiment showing that transgenic plants can reduce pollution, and it shows that the technology can work outside the laboratory. Selenium is a useful micronutrient for organisms, but too much can be toxic. Shale exists in certain areas of California, and farmland irrigation water will dissolve selenium in shale. The evaporation of water in the surface soil leads to the accumulation of selenium, which reaches a high level and is harmful to the plants. However, Brassica juncea naturally possesses the ability to resist selenium and absorb selenium through the process of root absorption. Norman Terry, a botanist and leader of the University of California, Berkeley, said: “Brassica juncea grows very fast and it can reach very high biomass even under conditions of high environmental stress.†Researchers to mustard Add a gene that produces selenium-enriched enzymes that increase the ability of transgenic mustard to selenium. The experiment found that the ability of this transgenic mustard to accumulate selenium was about 3.3 times higher than that of the traditional wild type Indian mustard. Relevant papers were published in the online edition of "Environmental Science & Technology".