摘要
木犀科11属19个种叶绿体基因组的一般特征和变异特征的比较分析显示,结果表明,该科叶绿体基因组大小为154–165kb,其差异主要是大单拷贝(LSC)长度的差异所致。Jasminum属3个物种的叶绿体基因组长度与其余物种有较大差异,该属clpP基因内含子和accD基因丢失。共线性分析表明, Jasminum属3个物种多个基因出现基因重排现象,倒位可能是重排的主要原因。Jasminum属在IRb/SSC和SSC/IRa边界的基因均与其它物种不同;重复序列与SSR数量检测结果表明,Jasminum属与其余物种在数量及重复长度上差异较大。基于CDS数据构建的系统发育树表明, Abeliophyllum distichum和Forsythia suspensa为木犀科中较早分化的类群。
In this study,the chloroplast genomes from 19 species(11 genera)in Oleaceae were compared to reveal the general characteristics and structural variations.The chloroplast genome sizes in Oleaceae were 154-165 kb,and the differences were mainly caused by the length of large single-copy regions.The chloroplast genome sizes of 3 species from the genus Jasminum differed greatly from that for other species;in addition,the introns from the clp P and accD genes were lost in Jasminum.Synteny analyses showed several gene rearrangements in 3 Jasminum species that were probably caused by inversions.The boundary genes between IRb/small single copy(SSC)and SSC/IRa regions in 3 Jasminum species differed from others.Repeat sequences and simple sequence repeat detection demonstrated that Jasminum had significant differences in repeat number and repeat length as compared with other genera.On the basis of shared protein-coding genes among 19 species,Abeliophyllum distichum and Forsythia suspensa were the early-diverging clades in Oleaceae.
作者
赵月梅
杨振艳
赵永平
李筱玲
赵志新
赵桂仿
Yuemei Zhao;Zhenyan Yang;Yongping Zhao;Xiaoling Li;Zhixin Zhao;Guifang Zhao(College of Biopharmaceutical and Food Engineering,Shangluo University,Shangluo 726000,China;Key Laboratory for Plant Diversity and Biogeography of East Asia,Kunming Institute of Botany,Chinese Academy of Sciences,Kunming 650201,China;Key Laboratory of Resource Biology and Biotechnology in Western China,Ministry of Education,College of Life Sciences,Northwest University,Xi’an 710069,China)
出处
《植物学报》
CAS
CSCD
北大核心
2019年第4期441-454,共14页
Chinese Bulletin of Botany
基金
商洛市博士科技创新团队(No.SK2017-45)
商洛学院高层次人才引进项目(No.17SKY029)
关键词
木犀科
叶绿体基因组
结构特征
系统发育
Oleaceae
chloroplast genomes
structural characteristics
phylogeny
作者简介
通讯作者:赵桂仿,E-mail:gfzhao@nwu.edu.cn
