America's citrus fruits are being decimated by an incurable disease—we need GM science to save them

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America's citrus fruits are being decimated by an incurable disease—we need GM science to save them
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We might be able to avoid the $50 glass of O.J. after all.

Farmers in the major U.S. citrus-producing regions—Florida, California, Texas and Arizona, in particular—are facing a plague of epic proportions.

Citrus greening is insidious. It blocks the flow of nutrients through the tree, a silent killer. In the final stages, an infected tree shows yellowed, mottled leaves and green, bitter, unusable fruit. Left alone, the tree will die within five to seven years. The “cure” developed by the plant biologists is ingenious. They inserted a gene isolated from the Arabidopsis plant—a member of the mustard family—to create enhanced resistance to greening and reduced disease severity. Several trees remained disease-free after 36 months in a field with a high number of diseased trees.

Citrus growers are also concerned that the public might be resistant to the concept of genetically engineered fruit, even though virtually all of the foods in the North American and European diets have been modified in some way.

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