文献类型： 外文期刊

作者： Zhang, Bin ¹ ; Wang, Zhiwei ¹ ; Han, Xiangyang ¹ ; Liu, Xue ¹ ; Wang, Qi ⁴ ; Zhang, Jiao ¹ ; Zhao, Hong ¹ ; Tang, Jinfu ⁵ ; Luo, Kangsheng ¹ ; Zhai, Zhaodong ¹ ; Zhou, Jun ⁶ ; Liu, Pangyuan ¹ ; He, Weiming ¹ ; Luo, Hong ⁷ ; Yu, Shuancang ¹ ; Gao, Qiang ⁴ ; Zhang, Liangsheng ⁴ ; Li, Dayong ¹ ;

作者机构： 1.Beijing Acad Agr & Forestry Sci, Natl Engn Res Ctr Vegetables, Beijing Vegetable Res Ctr, Beijing 100097, Peoples R China

2.Beijing Key Lab Vegetable Germplasm Improvement, Beijing 100097, Peoples R China

3.Minist Agr & Rural Affairs PR China, Key Lab Biol & Genet Improvement Hort Crops North, Beijing 100097, Peoples R China

4.Zhejiang Univ, Coll Agr & Biotechnol, Genom & Genet Engn Lab Ornamental Plants, Hangzhou 310058, Peoples R China

5.China Acad Chinese Med Sci, Natl Resource Ctr Chinese Mat Med, State Key Lab Dao Di Herbs, Beijing 100700, Peoples R China

6.Shandong Normal Univ, Coll Life Sci, Jinan 250014, Peoples R China

7.Clemson Univ, Dept Genet & Biochem, Clemson, SC 29634 USA

关键词： Cichorium endivia; Endive; Genome; Sesquiterpene lactone (STL); Terpene synthase (TPS); Asteraceae

期刊名称：GENOMICS （ 影响因子：4.31； 五年影响因子：4.38 ）

ISSN： 0888-7543

年卷期： 2022 年 114 卷 4 期

页码：

收录情况： SCI

摘要： Endive (Cichorium endivia L.) is a leafy vegetable in the Asteraceae family. Sesquiterpene lactones (STLs) in endive leaves bring a bitter taste that varies between varieties. Despite their importance in breeding varieties with unique flavours, sesquiterpenoid biosynthesis pathways in endive are poorly understood. We assembled a chromosome-scale endive genome of 641 Mb with a contig N50 of 5.16 Mb and annotated 46,711 protein-coding genes. Several gene families, especially terpene syntheses (TPS) genes, expanded significantly in the C. endivia genome. STLs biosynthesis-related genes and TPS genes in more bitter varieties have shown a higher level of expression, which could be attributed to genomic variations. Our results penetrate the origin and diversity of bitter taste and facilitate the molecular breeding of endive varieties with unique bitter tastes. The high-quality endive assembly would provide a reference genome for studying the evolution and diversity of Asteraceae.