Chrysotila dentata is an ecologically important marine alga contributing to the coccolith formation. In this study, a complete chloroplast (cp DNA) genome of Chrysotila dentata was sequenced by using Illumina Hiseq and was analyzed with the help of a bioinformatics tool CPGAVAS2. The circular chloroplast genome of Chrysotila dentata has a size of 109,017 bp with two inverted repeats (IRs) regions (4513 bp each) which is a common feature in most land plants and algal species. The Chrysotila dentata cp genome consists of 61 identified protein-coding genes, 30 tRNA genes and 6 rRNAs with 21 microsatellites. The phylogenetic relationship with other select algal species revealed a close phylogeny of Chrysotila dentata with Phaeocystis antarctica. This is the first report of the cp genome analysis of genus Chrysotila and the results from this study will be helpful for understanding the genetic structure and function of chloroplast in other species of Chrysotila.

Chrysotila dentata是一种具有重要生态意义的海藻，有助于形成球石。在这项研究中，使用 Illumina Hiseq对Chrysotila dentata的完整叶绿体 (cp DNA) 基因组进行了测序，并在生物信息学工具 CPGAVAS2 的帮助下进行了分析。Chrysotila dentata的环状叶绿体基因组大小为 109,017 bp，具有两个反向重复 (IR) 区域（每个 4513 bp），这是大多数陆地植物和藻类物种的共同特征。所述Chrysotila齿叶CP基因组由61标识的蛋白质编码基因，30个tRNA基因和6个rRNA与21个微卫星。与其他选择的藻类物种的系统发育关系揭示了Chrysotila dentata的密切系统发育与南极褐藻。这是金黄属cp基因组分析的首次报道，本研究结果将有助于了解金黄属其他物种叶绿体的遗传结构和功能。