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Type: Journal article
Title: Alanine aminotransferase controls seed dormancy in barley
Author: Sato, K.
Yamane, M.
Yamaji, N.
Kanamori, H.
Tagiri, A.
Schwerdt, J.
Fincher, G.
Matsumoto, T.
Takeda, K.
Komatsuda, T.
Citation: Nature Communications, 2016; 7:11625-1-11625-9
Publisher: Nature Publishing Group
Issue Date: 2016
ISSN: 2041-1723
Statement of
Kazuhiro Sato, Miki Yamane, Nami Yamaji, Hiroyuki Kanamori, Akemi Tagiri, Julian G. Schwerdt, Geoffrey B. Fincher, Takashi Matsumoto, Kazuyoshi Takeda, Takao Komatsuda
Abstract: Dormancy allows wild barley grains to survive dry summers in the Near East. After domestication, barley was selected for shorter dormancy periods. Here we isolate the major seed dormancy gene qsd1 from wild barley, which encodes an alanine aminotransferase (AlaAT). The seed dormancy gene is expressed specifically in the embryo. The AlaAT isoenzymes encoded by the long and short dormancy alleles differ in a single amino acid residue. The reduced dormancy allele Qsd1 evolved from barleys that were first domesticated in the southern Levant and had the long dormancy qsd1 allele that can be traced back to wild barleys. The reduced dormancy mutation likely contributed to the enhanced performance of barley in industrial applications such as beer and whisky production, which involve controlled germination. In contrast, the long dormancy allele might be used to control pre-harvest sprouting in higher rainfall areas to enhance global adaptation of barley.
Keywords: Plant dormancy
Rights: This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit
RMID: 0030048264
DOI: 10.1038/ncomms11625
Appears in Collections:Agriculture, Food and Wine publications

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