The complete chloroplast genome and phylogenetic analysis of Bauhinia glauca subsp. hupehana (Craib) T. C. Chen 1988

Bauhinia glauca subsp. hupehana (Craib) T. C. Chen 1988, a member of the Leguminosae family, Cercidoideae subfamily, and Bauhinia genus, has a rich history of traditional usage in Chinese medicine. Renowned for its analgesic properties, it is commonly employed for managing inflammation and pain. This study aimed to sequence the complete chloroplast genome of B. glauca subsp. hupehana using Illumina paired-end sequencing data. The chloroplast genome spans 156,967 bp and consists of four main regions: the large single-copy (LSC) region (89,185 bp), the small single-copy (SSC) region (19,146 bp), and a pair of inverted repeats (IRs) (24,318 bp). The overall GC content of the chloroplast genome is 36.19%, with specific values of 33.99%, 29.79%, and 42.76% for the LSC, SSC, and IR regions, respectively. A total of 128 genes were annotated in the chloroplast genome, including 83 protein-coding genes, 37 tRNA genes, and eight rRNA genes. Phylogenetic analysis revealed that B. glauca subsp. hupehana is closely related to Bauhinia racemose, indicating a sister taxon relationship between the two species. This study significantly contributes to the chloroplast genomic resource for Bauhinia, laying the groundwork for future phylogenetic investigations within the genus.

Bauhinia glauca subsp. hupehana (Craib) T. C. Chen 1988，隶属于豆科（Leguminosae）家族、刺槐亚科（Cercidoideae subfamily）及刺槐属（Bauhinia genus），在中医学中有着悠久的传统应用历史。以其镇痛特性著称，常用于治疗炎症和疼痛。本研究旨在利用Illumina配对末端测序数据对B. glauca subsp. hupehana的完整叶绿体基因组进行测序。叶绿体基因组全长156,967碱基对，包含四个主要区域：大型单拷贝（LSC）区域（89,185碱基对）、小型单拷贝（SSC）区域（19,146碱基对）以及一对反转重复序列（IRs）（24,318碱基对）。叶绿体基因组的整体GC含量为36.19%，其中LSC、SSC和IR区域的具体值分别为33.99%、29.79%和42.76%。叶绿体基因组中共注释了128个基因，包括83个蛋白质编码基因、37个tRNA基因和8个rRNA基因。系统发育分析显示，B. glauca subsp. hupehana与Bauhinia racemose密切相关，表明两者之间存在姐妹种关系。本研究对刺槐属的叶绿体基因组资源做出了重要贡献，为该属未来的系统发育研究奠定了基础。