Zha Xi, Wang Xiaoyang, Li Jinrong, Gao Fei, Zhou Yijun
College of Life and Environmental Sciences, Minzu University of China, #27, Zhongguancun South Street, Haidian, Beijing 100081, People's Republic of China.
J Genet. 2020;99.
belongs to the genus of the family Papilionoideae. It is mainly distributed in the desert and semidesert areas of northern China, and has high medicinal value and ecological function. Previous studies have reported the chemical composition and ecological functions of . However, only a few reports are available on the genomic information of , especially the chloroplast genome, which greatly limits the study of the evolutionary relationship between other species of Papilionoideae. Here, we report the complete chloroplast genome of . The size of the chloroplast genome is 155,207 bp, and the GC content is 36.44%. The chloroplast genome consists of 132 genes, including 83 protein-coding genes, 41 transfer RNA (tRNA) genes,and eight ribosomal RNA (rRNA) genes. Phylogenetic analysis revealed the taxonomic position of in Papilionoideae, and the genus and the genus were highly related. Comparative genomics analysis revealed the gene rearrangement in the evolution of . The comparison between and the species of the Papilionoideae identified a novel 23 kb inversion between the and which occurred before the divergence of and of Thermopsideae. This study provided an essential data for the understanding of phylogenetic status of .
属于蝶形花亚科的 属。它主要分布于中国北方的沙漠和半沙漠地区，具有较高的药用价值和生态功能。先前的研究报道了 的化学成分和生态功能。然而，关于 的基因组信息，尤其是叶绿体基因组的报道较少，这极大地限制了对蝶形花亚科其他物种进化关系的研究。在此，我们报道了 的完整叶绿体基因组。叶绿体基因组大小为155,207 bp，GC含量为36.44%。 叶绿体基因组由132个基因组成，包括83个蛋白质编码基因、41个转运RNA（tRNA）基因和8个核糖体RNA（rRNA）基因。系统发育分析揭示了 在蝶形花亚科中的分类地位，且 属与 属高度相关。比较基因组学分析揭示了 在进化过程中的基因重排。通过 将 与蝶形花亚科的物种进行比较，发现在 和 之间存在一个新的23 kb倒位，该倒位发生在热扁蓿豆族的 和 分化之前。本研究为了解 的系统发育地位提供了重要数据。
