The chromosome-level genome of double-petal phenotype jasmine provides insights into the biosynthesis of floral scent
文献类型： 外文期刊
作者： Qi, Xiangyu 1 ; Wang, Huadi 1 ; Liu, Shuyun 4 ; Chen, Shuangshuang 1 ; Feng, Jing 1 ; Chen, Huijie 1 ; Qin, Ziyi 1 ; Chen, Quanming 4 ; Blilou, Ikram 5 ; Deng, Yanming 1 ;
作者机构： 1.Jiangsu Acad Agr Sci, Inst Leisure Agr, Jiangsu Key Lab Hort Crop Genet Improvement, Nanjing 210014, Jiangsu, Peoples R China
2.Jiangsu Univ, Sch Life Sci, Zhenjiang 212013, Jiangsu, Peoples R China
3.Nanjing Agr Univ, Coll Hort, Nanjing 210014, Jiangsu, Peoples R China
4.Shanghai Personal Biotechnol Co Ltd, Shanghai 200231, Peoples R China
5.King Abdullah Univ Sci & Technol, Biol & Environm Sci & Engn, Thuwal 239556900, Saudi Arabia
关键词： Jasminum sambac Aiton; Oleaceae; Genome evolution; Floral scent; Terpene synthase
期刊名称：HORTICULTURAL PLANT JOURNAL （ 影响因子：5.7； 五年影响因子：5.4 ）
ISSN： 2095-9885
年卷期： 2024 年 10 卷 1 期
页码：
收录情况： SCI
摘要： Jasmine (Jasminum sambac Aiton) is a well-known cultivated plant species for its fragrant flowers used in the perfume industry and cos-metics. However, the genetic basis of its floral scent is largely unknown. In this study, using PacBio, Illumina, 10x Genomics and high-throughput chromosome conformation capture (Hi-C) sequencing technologies, a high-quality chromosome-level reference genome for J. sambac was obtained, exploiting a double-petal phenotype cultivar 'Shuangbanmoli' (JSSB). The results showed that the final assembled genome of JSSB is 580.33 Mb in size (contig N50 = 1.05 Mb; scaffold N50 = 45.07 Mb) with a total of 39 618 predicted protein-coding genes. Our analyses revealed that the JSSB genome has undergone an ancient whole-genome duplication (WGD) event at 91.68 million years ago (Mya). It was estimated that J. sambac diverged from the lineage leading to Olea europaea and Osmanthus fragrans about 28.8 Mya. On the basis of a combination of genomic, transcriptomic and metabolomic analyses, a range of floral scent volatiles and genes were identified involved in the benzenoid/phenylpropanoid and terpenoid biosynthesis pathways. The results provide new insights into the molecular mechanism of its fragrance biosynthesis in jasmine.
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