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New way to produce high-vitamin corn could improve nutrition in developing countries
Date:1/17/2008

Scientists have developed a potentially powerful new tool in the fight against deficiencies in dietary vitamin A, which cause eye diseases, including blindness, in 40 million children annually, and increased health risks for about 250 million people, mostly in developing countries.

This tool consists of "a new method of analyzing the genetic makeup of corn that will enable developing countries to identify and increase cultivation of corn that has naturally high levels of vitamin A precursors," says Ed Buckler, a co-leader of the research team from the U.S. Department of Agriculture, Agricultural Research Service and Cornell University

Corn is an essential part of the diets of hundreds of millions of people around the world, many of whom live in developing countries. Regular consumption by adults and children of adequate quantities of corn high in vitamin A precursors, which are converted in the human body into vitamin A, would reduce their chances of developing vitamin A deficiencies and associated health problems.

This new method of increasing cultivation of high-vitamin corn is designed to tap the natural genetic diversity of corn. It was developed by a team led by Buckler and Torbert Rocheford of the University of Illinois, and was partially funded by The National Science Foundation (NSF). It will be described in the January 18, 2007 edition of Science.

"In a field of thousands of ears of corn, each ear has a slightly different genetic makeup and resulting differences in physical characteristics, including levels of vitamin A precursors -- just like every person in a crowd has a slightly different genetic makeup and associated physiological differences," explains James Collins, assistant director for the Biological Sciences Directorate at NSF. But only a very small percentage of corn crops are genetically programmed to have naturally high levels of vitamin A precursors, and these high-vitamin ears cannot be identified me
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Contact: Ed Buckler
esb33@cornell.edu
607-255-4620
National Science Foundation
Source:Eurekalert

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