Draft genome of spinach and transcriptome diversity of 120 Spinacia accessions

• DOI: 10.1038/ncomms15275
• Publication Date: 2017-05-24T11:37:59Z
• Authors: Chenxi Xu; Chen Jiao; Honghe Sun; Xiaofeng Cai; Xiaoli Wang; Chenhui Ge; Yi Zheng; Wenli Liu; Xuepeng Sun; Yimin Xu; Jie Deng; Zhonghua Zhang; Sanwen Huang; Shaojun Dai; Beiquan Mou; Quanxi Wang; Zhangjun Fei; Quanhua Wang
• Keywords: Spinacia; Retrotransposon; Leafy

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 highly repetitive 74.4% its content in form transposable elements. No recent whole duplication events are observed spinach. Genome syntenic analysis between and sugar beet suggests substantial inter- intra-chromosome rearrangements during Caryophyllales evolution. Transcriptome sequencing 120 cultivated wild accessions reveals more than 420 K variants. Our data that S. turkestanica likely direct progenitor domestication has a weak bottleneck. We identify 93 sweeps genome, some associated agronomic traits including bolting, flowering leaf numbers. This study offers insights into evolution provides resources for research improvement.