GrainGenes Reference Report: SCI-314-1298
Reference
SCI-314-1298
Title
A NAC Gene regulating senescence improves grain protein, zinc, and iron content in wheat.
Journal
Science
Year
2006
Volume
314
Pages
1298-1301
Author
Uauy C Distelfeld A Fahima T Blechl A Dubcovsky J
Abstract
Enhancing the nutritional value of food crops is a means of improving human nutrition and health. We report here the positional cloning of Gpc-B1, a wheat quantitative trait locus associated with increased grain protein, zinc, and iron content. The ancestral wild wheat allele encodes a NAC transcription factor (NAM-B1) that accelerates senescence and increases nutrient remobilization from leaves to developing grains, whereas modern wheat varieties carry a nonfunctional NAM-B1 allele. Reduction in RNA levels of the multiple NAM homologs by RNA interference delayed senescence by more than 3 weeks and reduced wheat grain protein, zinc, and iron content by more than 30%.
External Databases
http://doi.org/10.1126/science.1133649
Allele
Gpc-B1a (Triticum) Gpc-B1b (Triticum)
GrainGenes is a product of the Agricultural Research Service of the US Department of Agriculture.
GrainGenes Reference Report: SCI-314-1298
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GrainGenes is a product of the Agricultural Research Service of the US Department of Agriculture. | |||