Evolution of the Grain Dispersal System in Barley

Mohammad Pourkheirandish, Goetz Hensel, Benjamin Kilian, Natesan Senthil, Guoxiong Chen, Mohammad Sameri, Perumal Azhaguvel, Shun Sakuma, Sidram Dhanagond, Rajiv Sharma, Martin Mascher, Axel Himmelbach, Sven Gottwald, Sudha K. Nair, Akemi Tagiri, Fumiko Yukuhiro, Yoshiaki Nagamura, Hiroyuki Kanamori, Takashi Matsumoto, George WillcoxChristopher P. Middleton, Thomas Wicker, Alexander Walther, Robbie Waugh, Geoffrey B. Fincher, Nils Stein, Jochen Kumlehn, Kazuhiro Sato, Takao Komatsuda

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Abstract

About 12,000 years ago in the Near East, humans began the transition from hunter-gathering to agriculture-based societies. Barley was a founder crop in this process, and the most important steps in its domestication were mutations in two adjacent, dominant, and complementary genes, through which grains were retained on the inflorescence at maturity, enabling effective harvesting. Independent recessive mutations in each of these genes caused cell wall thickening in a highly specific grain "disarticulation zone," converting the brittle floral axis (the rachis) of the wild-type into a tough, non-brittle form that promoted grain retention. By tracing the evolutionary history of allelic variation in both genes, we conclude that spatially and temporally independent selections of germplasm with a non-brittle rachis were made during the domestication of barley by farmers in the southern and northern regions of the Levant, actions that made a major contribution to the emergence of early agrarian societies.

Original languageEnglish
Pages (from-to)527-539
Number of pages13
JournalCell
Volume162
Issue number3
DOIs
Publication statusPublished - Aug 1 2015

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ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)

Cite this

Pourkheirandish, M., Hensel, G., Kilian, B., Senthil, N., Chen, G., Sameri, M., Azhaguvel, P., Sakuma, S., Dhanagond, S., Sharma, R., Mascher, M., Himmelbach, A., Gottwald, S., Nair, S. K., Tagiri, A., Yukuhiro, F., Nagamura, Y., Kanamori, H., Matsumoto, T., ... Komatsuda, T. (2015). Evolution of the Grain Dispersal System in Barley. Cell, 162(3), 527-539. https://doi.org/10.1016/j.cell.2015.07.002