The chromosome-level genome of double-petal phenotype jasmine provides insights into the biosynthesis of floral scent  

作　　者：Xiangyu Qi Huadi Wang Shuyun Liu Shuangshuang Chen Jing Feng Huijie Chen Ziyi Qin Quanming Chen Ikram Blilou Yanming Deng 

机构地区：[1]Jiangsu Key Laboratory for Horticultural Crop Genetic Improvement,Institute of Leisure Agriculture,Jiangsu Academy of Agricultural Sciences,Nanjing,Jiangsu 210014,China [2]School of Life Sciences,Jiangsu University,Zhenjiang,Jiangsu 212013,China [3]College of Horticulture,Nanjing Agricultural University,Nanjing,Jiangsu 210014,China [4]Shanghai Personal Biotechnology Company Limited,Shanghai 200231,China [5]Biological and Environmental Sciences and Engineering,King Abdullah University of Science and Technology,Thuwal 23955-6900,Saudi Arabia

出　　处：《Horticultural Plant Journal》2024年第1期259-272,共14页园艺学报（英文版）

基　　金：financially supported by the National Natural Science Foundation of China(Grant No.31772338);the Basic Scientific Research Business Special Project of Jiangsu Academy of Agricultural Sciences(Grant No.0090756100ZX)。

摘　　要：Jasmine(Jasminum sambac Aiton)is a well-known cultivated plant species for its fragrant flowers used in the perfume industry and cosmetics.However,the genetic basis of its floral scent is largely unknown.In this study,using PacBio,Illumina,10×Genomics and highthroughput 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 39618 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.

关 键 词：Jasminum sambac Aiton OLEACEAE Genome evolution Floral scent Terpene synthase 

分 类 号：S685.16[农业科学—观赏园艺]