A NAC Gene Regulating Senescence Improves Grain Protein, Zinc, and Iron Content in Wheat
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- 24 November 2006
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 314 (5803), 1298-1301
- https://doi.org/10.1126/science.1133649
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%.Keywords
This publication has 14 references indexed in Scilit:
- The high grain protein content gene Gpc-B1 accelerates senescence and has pleiotropic effects on protein content in wheatJournal of Experimental Botany, 2006
- AtNAP, a NAC family transcription factor, has an important role in leaf senescenceThe Plant Journal, 2006
- Physical map of the wheat high‐grain protein content gene Gpc‐B1 and development of a high‐throughput molecular markerNew Phytologist, 2005
- NAC transcription factors: structurally distinct, functionally diverseTrends in Plant Science, 2005
- Microcolinearity between a 2-cM region encompassing the grain protein content locus Gpc-6B1 on wheat chromosome 6B and a 350-kb region on rice chromosome 2Functional & Integrative Genomics, 2004
- Triticum dicoccoides: An important genetic resource for increasing zinc and iron concentration in modern cultivated wheatSoil Science and Plant Nutrition, 2004
- Evaluation of a High Grain Protein QTL from Triticum turgidum L. var. dicoccoides in an Adapted Durum Wheat BackgroundCrop Science, 2001
- RFLP Markers Associated with High Grain Protein from Triticum turgidum L. var. dicoccoides Introgressed into Hard Red Spring WheatCrop Science, 1999
- Mapping Gene(s) for Grain Protein in Tetraploid Wheat (Triticum turgidum L.) Using a Population of Recombinant Inbred Chromosome LinesCrop Science, 1997
- The relation between yield and protein in cereal grainJournal of the Science of Food and Agriculture, 1995