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[report整理] SENEWS-2011-03-01

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[Homework]SENEWS-2011-03-01

White rice is the world's most popular form of rice. But it goes through a million process that removes many nutrients. As a result, people who eat a poor diet based on the white rice may not get enough vitamin A. Each year, an estimated two hundred fifty thousand to half a million children go blind from vitamin A deficiency. The World Health Organization says half of them die within a year of losing their sight.
Vitamin A deficiency is a problem especially in Africa and South-east Asia. So scientists thought of an answer. They combined white rice with plant compounds that the body can change into vitamin A. The rice contains beta-carotene and other carotenoids. These plant colorings give the rice a golden color.
The scientists also thought of a plan to give away this golden rice for free to poor farmers. But the rice is genetically engineered. They say it can not be made using traditional methods to breed plants. The scientists worked for ten years until nineteen ninety to develop the technology to add genes to rice. Then it took nine more years to get the genes they wanted into the seed. The first field tests took place in two thousand four at Louisiana State University in the United States.
Golden rice is currently being tested in the Philippines. It is still not available for jample uses. Co-inventor Ingle Patric says rice with two added genes will be available in twenty thirteen. One gene comes from maize or corn, and the other from a soil bacteria. Mr. Patric is retired from the Swiss Federal Institute of Technology. He blames the delays on too many rules about genetically modified crops. Opponents say such crops may cause environmental damage by breeding with conventional plants. Opponents also question the safety of bio-tech foods.
Mr. Patric says golden rice has never been shown to be unsafe for the environment or people. Many agricultural organizations support the project. But there are also critics, including researches for the environmental group Green Peace. Several months ago, they questioned whether golden rice could do much for vitamin A deficiency. They said releasing genetically modified rice in Asia could permanently change traditional rice pariaties and wild ancesters of rice.

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