Scientists working at Syngenta and Myria Genetics Inc. reported they successfully decoded the genome of a variety of rice known as Nippon-Bare. A government-funded effort to decode the rice genome is also under way, but is at least two years behind the private effort.
Rice is, of course, one of the most important foods in the world. Almost 3 billion people worldwide eat rice, with 91 percent of all rice being grown in Asia.
The rice genome consists of 12 chromosomes with an estimated 50,000 total genes. The rice genome is the second largest genome decoded to date, with only the human genome being larger.
The biggest surprise in the decoding, according to researchers, was the similarity that the rice genome has to cereal crops.
“The biggest surprise,” Dr. Steve Briggs told the BBC, “is that the overall gene architecture and sequences is nearly identical to that of cereals. This means we truly have a planet genetic blueprint.”
This will make it easier to transfer findings in the rice genome to corn, wheat and other cereal crops. Briggs said that the functions of 80 percent of the genes are currently understood, while 20 percent of the genome remains a mystery.
The decoding of the rice genome is the latest in a series of genetic discoveries hailed by everyone except extreme environmentalists. Von Hernandez, campaign director of Greenpeace in South East Asia, told Reuters that the decoding of the rice genome is “a disturbing development.”
According to Hernandez, the rice genome is pointless because,
It’s not a shortage of food, which is a problem because there is food. It’s a problem of poor people having access that cannot be addressed by technological breakthrough.
This claim is inaccurate on a number of levels. First, although it is technically true that there is more than enough food grown to feed the world’s population, a significant amount of that food is grown to be used as animal feed.
In addition genetic modification of the rice genome promises to cut the cost of food in much the same way that the Green Revolution caused food prices to decline or stay stable over time thanks to increased supplies. Anything that leads to cheaper food worldwide is a very good thing for the world’s poor.
Finally, genetically modified food allows for diseases to be addressed which cannot be cured by simple access to food alone. For example, even in parts of Asia where people have more than enough calories to sustain themselves, millions suffer from vitamin A deficiency because rice lacks any vitamin A. Recently, however, a genetically modified rice variant has been introduced which contains beta-carotene and if widely planted could largely solve Vitamin A-related health problems.
All in all, the decoding of the rice genome is amazing and likely to dramatically increase world food supplies over the long term.
Source:
Rice genome falls to science. January 26, 2001.
Greenpeace says rice genome mapping “disturbing.” Reuters, January 29, 2001.