Shufang Yan, Yichao Liu, Shuxiang Feng, Xiaoxu Huang, Yinran Huang
Hebei Academic of Forestry and Grassland, Shijiazhuang, China.
Hebei Engineering Research Center for Trees Varieties, Shijiazhuang, China.
Mitochondrial DNA B Resour. 2020 May 27;5(3):2186-2187. doi: 10.1080/23802359.2020.1768958. eCollection 2020.
is a species of Sect.Ulmus and Ser.Nitentes in Ulmaceae, and it is an endangered wild plant in China. The complete chloroplast genome (cp) of was reported in this study. The result showed that the cp genome was 159,703 bp in length including a large single-copy (LSC) 88,039 bp and a small single-copy (SSC) 19,072 bp, which were separated by two inverted repeats (IRs) of 26,296 bp with the typical quadripartite structure, respectively. The genome encoded 131 genes, including 86 protein-coding genes, 37 tRNA genes, and 8 rRNA genes. The GC content was 35.53%. Chloroplast sequences were used for constructing phylogenetic tree to determine the evolutionary status of . The maximum-likelihood phylogenetic analysis showed that displayed a closer kinship to five other Ulmus species. This study provides important information for identification and conservation of species, germplasm resources utilization, and genetic engineering of Ulmus. The cp will provide a reference for future studies on species evolution of Ulmus.
它是榆科榆属春榆组和有翅榆系的一个物种，是中国一种濒危野生植物。本研究报道了该物种的完整叶绿体基因组（cp）。结果表明，cp基因组长度为159,703 bp，包括一个88,039 bp的大单拷贝区（LSC）和一个19,072 bp的小单拷贝区（SSC），它们分别被两个26,296 bp的反向重复序列（IR）隔开，具有典型的四分体结构。该基因组编码131个基因，包括86个蛋白质编码基因、37个tRNA基因和8个rRNA基因。GC含量为35.53%。利用叶绿体序列构建系统发育树以确定该物种的进化地位。最大似然法系统发育分析表明，该物种与其他五种榆属物种亲缘关系更近。本研究为榆属物种的鉴定与保护、种质资源利用及基因工程提供了重要信息。该cp基因组将为榆属物种进化的未来研究提供参考。
