The updated weeping forsythia genome reveals the genomic basis for the evolution and the forsythin and forsythoside A biosynthesis  

作　　者：Yong Li Fan Wang Nancai Pei Qian Li Hongli Liu Wangjun Yuan Hechen Zhang 

机构地区：[1]Innovation Platform of Molecular Biology,College of Landscape and Art,Henan Agricultural University,Zhengzhou 450002,China [2]Research Institute of Tropical Forestry,Chinese Academy of Forestry,Guangzhou 510520,China [3]School of Pharmacy,Henan University,Kaifeng,Henan 475000,China [4]Horticultural Research Institute,Henan Academy of Agricultural Sciences,Zhengzhou 450002,China

出　　处：《Horticultural Plant Journal》2023年第6期1149-1161,共13页园艺学报（英文版）

基　　金：supported by the Open Fund of State Key Laboratory of Tree Genetics and Breeding (Chinese Academy of Forestry)(Grant No.TGB2021004);National Natural Science Foundation of China (Grant Nos.31770225,31570594);Program of Guangzhou Municipal Science and Technology Bureau(Grant No.202102021257)。

摘　　要：Weeping forsythia (Forsythia suspensa,Oleaceae) is a deciduous broad-leaved tree species distributed in the warm temperate zone of China.However,the species still lacks a chromosome-level genome.In this study,the former draft genome (Accession No.WIPI00000000) of weeping forsythia was assembled into 14 chromosomes with a 712.9 Mb genome size.Weeping forsythia underwent a and b whole-genome duplication events.After the divergence between weeping forsythia and Olea europaea,1 453 gene families had a significant expansion,and 1 146 gene families had a significant contraction.The enrichment pathways and ontologies of expanded genes suggested that the tillering,photosynthesis and growth capacity of weeping forsythia were enhanced after the divergence of weeping forsythia and O.europaea.The contracted genes suggested that the resistance of weeping forsythia to cold and drought was weakened.The last glacial period led to a significant decline in the effective population size of weeping forsythia.Forty-six candidate genes were identified for the synthesis of the forsythin and forsythoside A by genomic and transcriptomic data.In this study,we improved the previous draft genome of weeping forsythia.Our genome will provide genomic resources for the subsequent evolution and breeding research of weeping forsythia.

关 键 词：Forsythia suspensa Chromosome-level genome Comparative genomics Forsythoside A FORSYTHIN Whole-genome duplication 

分 类 号：S685.24[农业科学—观赏园艺]