The pan-plastome reveals the genetic diversity and genetic divergence of Forsythia suspensa (Oleaceae) from the maternal inheritance perspective
文献类型： 外文期刊
作者： Cao, Linlin 1 ; Sun, Jiahui 2 ; Guo, Chang 1 ; Yan, Pengpeng 1 ; Wu, Nan 3 ; Liu, Lingdi 3 ; Wang, Yiheng 2 ; Liu, Kangjia 1 ; Li, Yuhan 1 ; Dong, Wenpan 1 ; Wang, Sheng 2 ;
作者机构： 1.Beijing Forestry Univ, Sch Ecol & Nat Conservat, Beijing 100083, Peoples R China
2.China Acad Chinese Med Sci, Natl Resource Ctr Chinese Mat Med, State Key Lab Qual Ensurance & Sustainable Use Dao, Beijing 100700, Peoples R China
3.Hebei Acad Agr & Forestry Sci, Inst Cash Crops, Hebei Med Plant Technol Innovat Ctr, Shijiazhuang 050051, Peoples R China
4.Chinese Med Sci, Dexing Res & Training Ctr, Dexing 334220, Peoples R China
关键词： Genetic divergence; Geographic isolation; Weeping forsythia; Pan-plastomes
期刊名称：INDUSTRIAL CROPS AND PRODUCTS （ 影响因子：6.2； 五年影响因子：6.2 ）
ISSN： 0926-6690
年卷期： 2025 年 234 卷
页码：
收录情况： SCI
摘要： Weeping forsythia (Forsythia suspensa (Thunb.) Vahl) is one of the 50 essential herbs in Chinese traditional medicine and is valued for its beautiful early spring flowers. The plastome exhibits high genetic variation within species and can be used to reveal species diversity from a maternal perspective. The plastome serves as an effective complement to the nuclear genomic data. In this study, we sequenced and assembled the plastomes of 88 samples covering all of the main distribution regions of F. suspensa to generate a pan-plastomes map and investigate the population structure and genetic diversity of this species. The F. suspensa plastomes exhibited a typical quadripartite structure and 132 annotated genes, with a length of 156,322-156,479 bp. Abundant nucleotide variations were detected among the plastomes, including 734 single nucleotide variations, 211 indels, and 11 small inversions. The three types of indels had significant variations in length. A 1 bp length was the most common for normal-indels and microsatellite-related indels, while 4-6 bp was the most common length of the repeat-related indels. Five well-supported groups were resolved using population structure analysis, the phylogenetic method, and principal component analysis, revealing significant genetic differentiation among the five groups. Genetic divergence was consistent with the geographical pattern, indicating that geographic isolation is one of the factors contributing to the genetic diversity and genetic divergence of F. suspensa. This study evaluated the maternal genetic diversity pattern, generated a pan-plastome map of weeping forsythia, and provided important data for future breeding projects and germplasm preservation.
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