Draft genome of spinach and transcriptome diversity of 120 Spinacia accessions

文献类型： 外文期刊

第一作者： Xu, Chenxi

作者： Xu, Chenxi;Cai, Xiaofeng;Wang, Xiaoli;Ge, Chenhui;Dai, Shaojun;Wang, Quanxi;Fei, Zhangjun;Wang, Quanhua;Jiao, Chen;Sun, Honghe;Zheng, Yi;Liu, Wenli;Sun, Xuepeng;Xu, Yimin;Fei, Zhangjun;Deng, Jie;Zhang, Zhonghua;Huang, Sanwen;Mou, Beiquan;Fei, Zhangjun

作者机构：

期刊名称：NATURE COMMUNICATIONS （ 影响因子：14.919； 五年影响因子：15.805 ）

ISSN： 2041-1723

年卷期： 2017 年 8 卷

页码：

收录情况： SCI

摘要： Spinach is an important leafy vegetable enriched with multiple necessary nutrients. Here we report the draft genome sequence of spinach (Spinacia oleracea, 2n = 12), which contains 25,495 protein-coding genes. The spinach genome is highly repetitive with 74.4% of its content in the form of transposable elements. No recent whole genome duplication events are observed in spinach. Genome syntenic analysis between spinach and sugar beet suggests substantial inter-and intra-chromosome rearrangements during the Caryophyllales genome evolution. Transcriptome sequencing of 120 cultivated and wild spinach accessions reveals more than 420 K variants. Our data suggests that S. turkestanica is likely the direct progenitor of cultivated spinach and spinach domestication has a weak bottleneck. We identify 93 domestication sweeps in the spinach genome, some of which are associated with important agronomic traits including bolting, flowering and leaf numbers. This study offers insights into spinach evolution and domestication and provides resources for spinach research and improvement.

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