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Combined genomic, transcriptomic, and metabolomic analyses provide insights into chayote (Sechium edule) evolution and fruit development

文献类型： 外文期刊

作者： Fu, Anzhen 1 ; Wang, Qing 1 ; Mu, Jianlou 2 ; Ma, Lili 1 ; Wen, Changlong 1 ; Zhao, Xiaoyan 1 ; Gao, Lipu 1 ; Li, Jian 3 ; S 1 ;

作者机构： 1.Beijing Acad Agr & Forestry Sci, Key Lab Biol & Genet Improvement Hort Crops North, Minist Agr,Beijing Key Lab Fruits & Vegetable Sto, Collaborat Innovat Ctr Cucurbits Crops,Beijing Ve, Beijing 100097, Peoples R China

2.Hebei Agr Univ, Coll Food Sci & Technol, Baoding 071001, Peoples R China

3.Beijing Technol & Business Univ, Beijing Adv Innovat Ctr Food Nutr & Human Hlth, Beijing 100048, Peoples R China

4.Zhejiang Univ, Dept Hort, Hangzhou 310058, Peoples R China

5.Beijing Acad Agr & Forestry Sci, Beijing Acad Forestry & Pomol Sci, Beijing 100093, Peoples R China

6.Biomarker Technol Corp, Beijing 101300, Peoples R China

7.Univ Nottingham, Sch Biosci, Sutton Bonington Campus, Loughborough LE12 5RD, Leics, England

期刊名称：HORTICULTURE RESEARCH （ 影响因子：6.793； 五年影响因子：6.589 ）

ISSN： 2662-6810

年卷期： 2021 年 8 卷 1 期

页码：

收录情况： SCI

摘要： Chayote (Sechium edule) is an agricultural crop in the Cucurbitaceae family that is rich in bioactive components. To enhance genetic research on chayote, we used Nanopore third-generation sequencing combined with Hi-C data to assemble a draft chayote genome. A chromosome-level assembly anchored on 14 chromosomes (N50 contig and scaffold sizes of 8.40 and 46.56 Mb, respectively) estimated the genome size as 606.42 Mb, which is large for the Cucurbitaceae, with 65.94% (401.08 Mb) of the genome comprising repetitive sequences; 28,237 protein-coding genes were predicted. Comparative genome analysis indicated that chayote and snake gourd diverged from sponge gourd and that a whole-genome duplication (WGD) event occurred in chayote at 25 +/- 4 Mya. Transcriptional and metabolic analysis revealed genes involved in fruit texture, pigment, flavor, flavonoids, antioxidants, and plant hormones during chayote fruit development. The analysis of the genome, transcriptome, and metabolome provides insights into chayote evolution and lays the groundwork for future research on fruit and tuber development and genetic improvements in chayote.

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