Detection of NAM-A1 natural variants in bread wheat reveals differences in haplotype distribution between a worldwide core collection and european elite germplasm

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.

Bibliographic Details

Main Authors:	Cormier, Fabien, Throude, Mickaël, Ravel, Catherine, Le Gouis, Jacques, Leveugle, Magalie, Lafarge, Stéphane, Exbrayat, Florence, Duranton, Nadine, Praud, Sébastien
Format:	article biblioteca
Language:	eng
Subjects:	F30 - Génétique et amélioration des plantes, Triticum turgidum, Triticum aestivum, Triticum, Transcription génique, germoplasme, http://aims.fao.org/aos/agrovoc/c_7958, http://aims.fao.org/aos/agrovoc/c_7951, http://aims.fao.org/aos/agrovoc/c_7950, http://aims.fao.org/aos/agrovoc/c_35128, http://aims.fao.org/aos/agrovoc/c_3249,
Online Access:	http://agritrop.cirad.fr/587090/ http://agritrop.cirad.fr/587090/1/NAM-A1.pdf
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