Journal article

On the Origin of the Non-brittle Rachis Trait of Domesticated Einkorn Wheat

Mohammad Pourkheirandish, Fei Dai, Shun Sakuma, Hiroyuki Kanamori, Assaf Distelfeld, George Willcox, Taihachi Kawahara, Takashi Matsumoto, Benjamin Kilian, Takao Komatsuda

FRONTIERS IN PLANT SCIENCE | FRONTIERS MEDIA SA | Published : 2018

Abstract

Einkorn and emmer wheat together with barley were among the first cereals domesticated by humans more than 10,000 years ago, long before durum or bread wheat originated. Domesticated einkorn wheat differs from its wild progenitor in basic morphological characters such as the grain dispersal system. This study identified the Non-brittle rachis 1 (btr1) and Non-brittle rachis 2 (btr2) in einkorn as homologous to barley. Re-sequencing of the Btr1 and Btr2 in a collection of 53 lines showed that a single non-synonymous amino acid substitution (alanine to threonine) at position 119 at btr1, is responsible for the non-brittle rachis trait in domesticated einkorn. Tracing this haplotype variation b..

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Grants

Funding Acknowledgements

We thank Dr. A. M. Alqudah (IPK, Germany) for help with QTL analysis. We are very grateful to Dr. A. Bogaard (Oxford, United Kingdom) and Dr. H. Ozkan (Adana, Turkey) for valuable comments on an earlier version of this MS. This work was partially supported by Japanese Society for Promotion of Science to FD, MP, and TKo.