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Agronomy 2015, 5(2), 143-151; doi:10.3390/agronomy5020143

Detection of NAM-A1 Natural Variants in Bread Wheat Reveals Differences in Haplotype Distribution between a Worldwide Core Collection and European Elite Germplasm

1
Biogemma, Centre de recherche de Chappes, Route d'Ennezat CS90126, Chappes 63720, France
2
Institut National de la Recherche Agronomique, UMR 1095 Génétique, Diversité et Ecophysiologie des Céréales, 5 chemin de Beaulieu, Clermont-Ferrand F-63 039, France
3
Université Blaise Pascal, UMR1095 Génétique, Diversité et Ecophysiologie des Céréales, Aubière F-63177, France
*
Author to whom correspondence should be addressed.
Academic Editor: Bertrand Hirel
Received: 20 February 2015 / Accepted: 23 April 2015 / Published: 29 April 2015
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Abstract

In wheat, remobilization of nitrogen absorbed before anthesis and regulation of monocarpic senescence is a major issue in breeding for nutrient use efficiency. We identified natural variants of NAM-A1, a gene having the same role as its well-characterized homoeolog NAM-B1, a NAC transcription factor associated with senescence kinetics and nutrient remobilization to the grain. Differences in haplotype frequencies between a worldwide core collection and a panel of European elite varieties were assessed and discussed. Moreover, hypotheses for the loss of function of the most common haplotype in elite European germplasm are discussed. View Full-Text
Keywords: GPC-A1; NAC; remobilization; senescence; Triticum aestivum L. GPC-A1; NAC; remobilization; senescence; Triticum aestivum L.
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Cormier, F.; Throude, M.; Ravel, C.; Gouis, J.L.; Leveugle, M.; Lafarge, S.; Exbrayat, F.; Duranton, N.; Praud, S. Detection of NAM-A1 Natural Variants in Bread Wheat Reveals Differences in Haplotype Distribution between a Worldwide Core Collection and European Elite Germplasm. Agronomy 2015, 5, 143-151.

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