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

Agronomy

Fabien Cormier²  Mickaël Throude²  Catherine Ravel¹  Jacques Le Gouis¹  Magalie Leveugle²  Stéphane Lafarge²  Florence Exbrayat¹  Nadine Duranton²  Sstien Praud² 

[1] Institut National de la Recherche Agronomique, UMR 1095 Génétique, Diversité et Ecophysiologie des Céréales, 5 chemin de Beaulieu, Clermont-Ferrand F-63 039, France; E-Mails:;Biogemma, Centre de recherche de Chappes, Route d’Ennezat CS90126, Chappes 63720, France; E-Mails:

关键词: GPC-A1;    NAC;    remobilization;    senescence;    Triticum aestivum L.;   

DOI  :  10.3390/agronomy5020143

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.