The Jasmine (Jasminum sambac) Genome Provides Insight into the Biosynthesis of Flower Fragrances and Jasmonates

文献类型： 外文期刊

第一作者： Chen, Gang

作者： Chen, Gang;Mostafa, Salma;Lu, Zhaogeng;Cui, Jiawen;Wang, Yun;Lu, Jinkai;Mao, Xinyu;Chang, Bang;Gan, Quan;Wang, Li;Jia, Zhichao;Jin, Biao;Chen, Gang;Mostafa, Salma;Lu, Zhaogeng;Jin, Biao;Du, Ran;Liao, Qinggang;Yan, Jianbin;Yang, Xiulian;Zhu, Yingfang

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关键词： Jasmine flower; Jasminum sambac; Genome; Jasmonate; Flower fragrance

期刊名称：GENOMICS PROTEOMICS & BIOINFORMATICS （ 影响因子：9.5； 五年影响因子：10.1 ）

ISSN： 1672-0229

年卷期： 2023 年 21 卷 1 期

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收录情况： SCI

摘要： Jasminum sambac (jasmine flower), a world-renowned plant appreciated for its excep-tional flower fragrance, is of cultural and economic importance. However, the genetic basis of its fragrance is largely unknown. Here, we present the first de novo genome assembly of J. sambac with 550.12 Mb (scaffold N50 = 40.10 Mb) assembled into 13 pseudochromosomes. Terpene synthase (TPS) genes associated with flower fragrance are considerably amplified in the form of gene clusters through tandem duplications in the genome. Gene clusters within the salicylic acid/benzoic acid/theobromine (SABATH) and benzylalcohol O-acetyltransferase/anthocyanin O-hydroxycinnamoyltransferases/anthranilate N-hydroxycinnamoyl/benzoyltransferase/deacetyl-vindoline 4-O-acetyltransferase (BAHD) superfamilies were identified to be related to the biosyn-thesis of phenylpropanoid/benzenoid compounds. Several key genes involved in jasmonate biosyn-thesis were duplicated, causing an increase in copy numbers. In addition, multi-omics analyses identified various aromatic compounds and many genes involved in fragrance biosynthesis path-ways. Furthermore, the roles of JsTPS3 in b-ocimene biosynthesis, as well as JsAOC1 and JsAOS in jasmonic acid biosynthesis, were functionally validated. The genome assembled in this study for J. sambac offers a basic genetic resource for studying floral scent and jasmonate biosynthesis, and provides a foundation for functional genomic research and variety improvements in Jasminum.

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