摘要
对疏花地榆(Sanguisorba diandra)叶绿体基因组的研究发现,其基因组为环状结构,全长为154832 bp,GC含量37.3%;基因组呈典型的四分体结构,包括一个大单拷贝区(large single copy region,LSC)、一个小单拷贝区(small single copy region,SSC)和两个反向重复区(inverted repeats,IRs),长度分别为85013 bp、18703 bp和25558 bp,GC含量分别为35.3%、31.4%和42.8%。疏花地榆叶绿体基因组共编码129个基因,包括84个蛋白质编码基因(protein-coding genes,PCGs)、37个转运核糖核酸(tRNA)基因和8个核糖体核糖核酸(rRNA)基因,其中17个基因在IR区有2个拷贝。系统发育分析结果表明,地榆属为单系类群,疏花地榆与矮地榆(Sanguisorba filiformis)的亲缘关系最近。
Research reveals that the chloroplast genome of Sanguisorba diandra has a circular form with a length of 154832 bp and GC content of 37.3%.The genome presents a typical quadripartite structure composed of a large single copy region(LSC),a small single copy region(SSC),and two inverted repeats(IRs)with lengths of 85013 bp,18703 bp,and 25558 bp and GC content of 35.3%,31.4%,and 42.8%,respectively.The chloroplast genome of Sanguisorba sparsifolia encodes 129 genes in total,including 84 protein-coding genes(PCGs),37 tRNA genes,and 8 rRNA genes.Two copies of 17 genes exist in the IR regions.Phylogenetic analysis shows that Sanguisorba is monophyletic,and Sanguisorba diandra has the closest genetic relationship with Sanguisorba filiformis.
作者
红良
张国建
李琴琴
Hongliang;ZHANG Guojian;LI Qinqin(College of Life Science and Technology,Inner Mongolia Normal University,Hohhot 010022,China;Key Laboratory of Biodiversity Conservation and Sustainable Utilization in Mongolian Plateau for College and University of Inner Mongolia Autonomous Region,Hohhot 010022,China)
出处
《内蒙古师范大学学报(自然科学版)》
2025年第2期120-124,共5页
Journal of Inner Mongolia Normal University(Natural Science Edition)
基金
内蒙古自治区自然科学基金资助项目“中国地榆属比较叶绿体基因组学及DNA条形码研究”(2022LHQN03004)。
关键词
疏花地榆
叶绿体基因组
地榆属
蔷薇科
Sanguisorba diandra
chloroplast genome
Sanguisorba
Rosaceae
