Sequence divergence between spelt and common wheat

文献类型： 外文期刊

第一作者： Stiller, Jiri

作者： Stiller, Jiri;Manners, John M.;Liu, Chunji;Liu, Miao;Liu, Miao;Liu, Dengcai;Zhao, Qiang;Qi, Feng;Tang, Shican;Miao, Jiashun;Han, Bin;Vrana, Jan;Holusova, Katerina;Dolezel, Jaroslav

作者机构：

期刊名称：THEORETICAL AND APPLIED GENETICS （ 影响因子：5.699； 五年影响因子：5.565 ）

ISSN： 0040-5752

年卷期： 2018 年 131 卷 5 期

页码：

收录情况： SCI

摘要： Sequence comparison between spelt and common wheat reveals that the former has huge potential in enriching the genetic variation of the latter. Genetic variation is the foundation of crop improvement. By comparing genome sequences of a Triticum spelta accession and one of its derived hexaploid lines with the sequences of the international reference genotype Chinese Spring, we detected variants more than tenfold higher than those present among common wheat (T. aestivum L) genotypes. Furthermore, different from the typical 'V-shaped' pattern of variant distribution often observed along wheat chromosomes, the sequence variation detected in this study was more evenly distributed along the 3B chromosome. This was also the case between T. spelta and the wild emmer genome. Genetic analysis showed that T. spelta and common wheat formed discrete groups. These results showed that, although it is believed that the spelt and common wheat are evolutionarily closely related and belong to the same species, a significant sequence divergence exists between them. Thus, the values of T. spelta in enriching the genetic variation of common wheat can be huge.

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