摘要
为了解北京丁香的质体基因组特征,本研究分析了北京丁香的质体基因组结构和基因构成,并联合其它35个木犀科物种和2个泡桐科物种进行了系统发育分析。结果表明:(1)北京丁香的质体基因组共编码131个基因,包含36个tRNA基因、8个rRNA基因和87个mRNA基因,分别占所有注释基因的27.48%、6.11%和66.41%;(2)在该质体基因组的密码子组成中,RSCU值大于1的密码子有30个,31个密码子的RSCU值小于1,且密码子有以G和C结尾的使用偏好性;(3)北京丁香质体基因组中共识别出178个正向重复序列和177个回文重复序列;(4)NJ系统发育树表明北京丁香与丁香属植物暴马丁香亲缘关系较为密切,丁香属植物与女贞属植物亲缘关系密切。
In order to analyze the chloroplast genome characteristics of Syringa pekinensis,this study analyzed the chloroplast genome structure and gene composition characteristics,and combined with 35 other Oleaceae species and 2 Paulownia species for phylogenetic analysis.The results are as follows.(1)The plastid genome of S.pekinensis encodes 131 genes,including 36 tRNA genes,8 rRNA genes and 87 mRNA genes,accounting for 27.48%,6.11%and 66.41%of all annotated genes,respectively.(2)In the codon composition of the chloroplast genome,there were 30 codons with RSCU value>1 and 31 codons with RSCU value<1,and the codons had the preference of ending with G and C.(3)A total of 178 forward repeats and 177 palindromic repeats were identified in the plastid genome of S.pekinensis.(4)The NJ phylogenetic tree showed that the genetic relationship between S.pekinensis and S.reticulata was close,and the genetic relationship between Syringa and Ligustrum was close.
作者
鲍海娟
徐春柳
王燕燕
谷小龙
刘晶
BAO Haijuan;XU Chunliu;WANG Yanyan;GU Xiaolong;LIU Jing(College of Ecological Environment and Resources,Qinghai Minzu University,Xining 810007,China;Qinghai Provincial Key Laboratory of Highvalue Utilization of Characteristic Economic Plants,Qinghai Minzu University,Xining 810007,China;Kairui Graduate Workstation of Medicinal Plant Resources,Qinghai Minzu University,Xining 810007,China;Northwest Key Laboratory of Cultivated Land Conservation and Marginal Land Improvement,Ministry of Agriculture and Rural Affairs,Qinghai Bensheng Grass Industry Co.,Ltd.,Delingha 817000,China)
出处
《鲁东大学学报（自然科学版）》
2024年第4期360-369,共10页
Journal of Ludong University:Natural Science Edition
基金
青海省重大科技专项(2023-NK-A3)。
关键词
北京丁香
木犀科
质体
系统发育树
Syringa pekinensis
Oleaceae
plastid
phylogenetic tree
