The complete chloroplast genome sequence of Hydrocotyle vulgaris L. (Araliaceae)

Hydrocotyle vulgaris is a perennial wetland clonal plant in the Araliaceae family, which was introduced to China as an ornamental plant in the 1990s. Although H. vulgaris is now considered a potential invasiveness species in China, it also plays a significant role in the remediation of water pollution. Here, we reported its complete chloroplast genome and analyzed the basic characteristics. The chloroplast genome was 153,165 bp in length, including a pair of inverted repeat (IR) regions of 25,072 bp separated by a large single-copy (LSC) region of 84,291 bp and a small single-copy (SSC) region of 18,730 bp. The H. vulgaris chloroplast genome contained 132 predicted genes, and its overall GC content was 37.60%. Phylogenetic analysis revealed that H. vulgaris was closely related to H. verticillata. The H. vulgaris chloroplast genome presented in this study will lay a foundation for further genetic and genomic studies of the genus Hydrocotyle.普通天胡荽（Hydrocotyle vulgaris）为五加科（Araliaceae）多年生湿地克隆植物，于20世纪90年代作为观赏植物引入中国。尽管目前普通天胡荽在中国被视为潜在入侵物种，但其在水污染修复领域亦发挥着重要作用。本研究报道了该物种的完整叶绿体基因组，并对其基本特征展开分析。该叶绿体基因组全长153165 bp，包含一对长25072 bp的反向重复（inverted repeat, IR）区域，两区域间由长84291 bp的大单拷贝（large single-copy, LSC）区域与长18730 bp的小单拷贝（small single-copy, SSC）区域分隔。普通天胡荽的叶绿体基因组共预测得到132个基因，其总GC含量为37.60%。系统发育分析结果显示，普通天胡荽与轮叶天胡荽（Hydrocotyle verticillata）亲缘关系紧密。本研究发布的普通天胡荽叶绿体基因组将为天胡荽属（Hydrocotyle）后续的遗传与基因组学研究奠定坚实基础。