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Telomere-to-telomere genome assembly of bitter melon (Momordica charantia L. var. abbreviata Ser.) reveals fruit development, composition and ripening genetic characteristics

文献类型： 外文期刊

作者： Fu, Anzhen 1 ; Zheng, Yanyan 1 ; Guo, Jing 3 ; Grierson, Donald 4 ; Zhao, Xiaoyan 1 ; Wen, Changlong 5 ; Liu, Ye 2 ; Li, Jian 2 ; Zhang, Xuewen 6 ; Yu, Ying 6 ; Ma, Hong 7 ; Wang, Qing 1 ; Zuo, Jinhua 1 ;

作者机构： 1.Beijing Acad Agr & Forestry Sci, Inst Agrifood Proc & Nutr, Beijing Key Lab Fruits & Vegetable Storage andProc, Key Lab Vegetable Postharvest Proc Minist Agr & Ru, Beijing 100097, Peoples R China

2.Beijing Technol & Business Univ BTBU, Beijing Engn & Technol Res Ctr Food Addit, Beijing Adv Innovat Ctr Food Nutr & Human Hlth, Sch Foodand Hlth, Beijing 100048, Peoples R China

3.Fudan Univ, Inst Biodivers Sci, Inst Plant Biol, Sch Life Sci, 2005 Songhu Rd, Shanghai 200438, Peoples R China

4.Univ Nottingham, Sch Biosci, Sutton Bonington Campus, Loughborough LE125RD, Leics, England

5.Beijing Acad Agr & Forestry Sci, Beijing Vegetable Res Ctr BVRC, Natl Engn Res Ctr Vegetables, BeijingKey Lab Vegetable Germplasms Improvement, Beijing 100097, Peoples R China

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

7.Penn State Univ, Huck Inst Life Sci, Dept Biol, University Pk, PA 16802 USA

期刊名称：HORTICULTURE RESEARCH （ 影响因子：8.7； 五年影响因子：9.0 ）

ISSN： 2662-6810

年卷期： 2023 年 10 卷 1 期

页码：

收录情况： SCI

摘要： Momordica charantia L. var. abbreviata Ser. (Mca), known as bitter gourd or bitter melon, is a Momordica variety with medicinal value and belongs to the Cucurbitaceae family. In view of the lack of genomic information on bitter gourd and other Momordica species and to promote Mca genomic research, we assembled a 295.6-Mb telomere-to-telomere (T2T) high-quality Mca genome with six gap-free chromosomes after Hi-C correction. This genome is anchored to 11 chromosomes, which is consistent with the karyotype information, and comprises 98 contigs (N50 of 25.4 Mb) and 95 scaffolds (N50 of 25.4 Mb). The Mca genome harbors 19 895 protein-coding genes, of which 45.59% constitute predicted repeat sequences. Synteny analysis revealed variations involved in fruit quality during the divergence of bitter gourd. In addition, assay for transposase-accessible chromatin by high-throughput sequencing and metabolic analysis showed that momordicosides and other substances are characteristic of Mca fruit pulp. A combined transcriptomic and metabolomic analysis revealed the mechanisms of pigment accumulation and cucurbitacin biosynthesis in Mca fruit peels, providing fundamental molecular information for further research on Mca fruit ripening. This report provides a new genetic resource for Momordica genomic studies and contributes additional insights into Cucurbitaceae phylogeny.

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