Jasmine [Jasminum sambac (L.) Aiton] is an important cultivated plant species that is valued for its ornamental, medicinal and edible values. However, the genomic information available for jasmine is limited. In this study, the complete chloroplast (cp) genomes of single-petal (SP) and double-petal (DP) cultivars of jasmine were investigated. An entire cp genome comparison, inverted repeat contraction and expansion were analyzed among several species, including the two jasmine cultivars, and phylogenetic analysis was performed. The results showed that the complete cp genomes were 163,315 bp (SP) and 163,281 bp (DP) long, respectively. Both genomes exhibited a single circular molecule with quadripartite structure consisting of a pair of inverted repeats separated by the large and small single-copy regions. Both SP and DP cultivars contained 114 unique genes. Sequence analysis identified 31 tandem repeats, 15 forward repeats, 14 palindrome repeats and five complement repeats in both cp genomes. A total of 118 and 117 simple sequence repeats (SSRs) were detected in the cp genomes of SP and DP cultivars, respectively. Phylogenetic analysis strongly supported that the SP cultivar was close to DP, and J. sambac belonged to the family Oleaceae, order Contortae. The complete cp genome sequences presented in this report may contribute to genetic and phylogenetic studies of this species.

中文翻译：

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Jasminum sambac L.（木犀科）的完整叶绿体基因组

茉莉花 [Jasminum sambac (L.) Aiton] 是一种重要的栽培植物，具有观赏、药用和食用价值。然而，茉莉花可用的基因组信息是有限的。在这项研究中，研究了茉莉花单瓣 (SP) 和双瓣 (DP) 栽培品种的完整叶绿体 (cp) 基因组。对包括两个茉莉花品种在内的几个物种进行了完整的 cp 基因组比较、反向重复收缩和扩增，并进行了系统发育分析。结果表明，完整的cp基因组长度分别为163,315 bp (SP)和163,281 bp (DP)。两个基因组都表现出具有四分结构的单个圆形分子，该分子由一对由大和小的单拷贝区域分隔的反向重复组成。SP 和 DP 品种都包含 114 个独特的基因。序列分析在两个 cp 基因组中确定了 31 个串联重复、15 个正向重复、14 个回文重复和 5 个互补重复。在 SP 和 DP 品种的 cp 基因组中分别检测到 118 和 117 个简单序列重复 (SSR)。系统发育分析强烈支持SP 栽培品种接近DP，并且J. sambac 属于木犀科Contortae。本报告中提供的完整 cp 基因组序列可能有助于该物种的遗传和系统发育研究。系统发育分析强烈支持SP 栽培品种接近DP，并且J. sambac 属于木犀科Contortae。本报告中提供的完整 cp 基因组序列可能有助于该物种的遗传和系统发育研究。系统发育分析强烈支持SP 栽培品种接近DP，并且J. sambac 属于木犀科Contortae。本报告中提供的完整 cp 基因组序列可能有助于该物种的遗传和系统发育研究。