The complete plastome of <i>Campsis radicans</i> (L.) Bureau 1864 and its phylogenetic analysis

<i>Campsis radicans</i> (L.) Bureau 1864, a species of Bignoniaceae, has a widespread paleotropical distribution and is utilized for horticultural and traditional Chinese medicinal purposes. Despite the plant’s significance, its genetic diversity must be better understood. In this study, we have successfully assembled and characterized the complete plastome of <i>C. radicans</i>, marking a significant advancement toward comprehending its genetic composition. The plastome is 153,630 bp long and harbors 130 genes, including 86 protein-coding genes, 36 tRNA genes, and eight rRNA genes. Our phylogenomic analysis of the representative species of Bignoniaceae indicated that <i>C. radicans</i> formed a monophyletic sister clade of <i>Campsis</i> with <i>C. grandiflora</i>. These findings are crucial for conserving and utilizing this important plant species. They also highlight the potential for future research into the evolution and preservation of <i>C</i>. <i>radicans</i>, which could be advantageous in pharmaceutical applications.厚萼凌霄（Campsis radicans (L.) Bureau 1864）隶属于紫葳科（Bignoniaceae），广布于古热带地区，兼具园艺观赏与传统中药应用价值。尽管该物种具有重要的研究与应用价值，当前对其遗传多样性的认知仍有待深化。本研究成功组装并注释了厚萼凌霄的完整质体基因组（plastome），为解析其遗传组成取得了重要进展。该质体基因组全长153,630 bp，共包含130个基因，其中蛋白编码基因86个、转运RNA（tRNA）基因36个、核糖体RNA（rRNA）基因8个。通过对紫葳科代表性物种的系统基因组学分析，结果显示厚萼凌霄与凌霄（Campsis grandiflora）共同构成凌霄属（Campsis）的单系姊妹支。本研究结果对于该重要植物物种的保育与利用具有关键指导意义，同时为厚萼凌霄的演化机制与保护研究提供了新的思路，其成果在药用开发领域亦具备潜在应用价值。