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Phylogeography of Prunus armeniaca L. revealed by chloroplast DNA and nuclear ribosomal sequences

文献类型： 外文期刊

作者： Li, Wen-Wen 1 ; Liu, Li-Qiang 1 ; Zhang, Qiu-Ping 2 ; Zhou, Wei-Quan 1 ; Fan, Guo-Quan 3 ; Liao, Kang 1 ;

作者机构： 1.Xinjiang Agr Univ, Coll Hort & Forestry, Urumqi, Xinjiang, Peoples R China

2.Liaoning Inst Pomol, Xiongyue Natl Germplasm Resources Garden, Shenyang, Peoples R China

3.Xinjiang Acad Agr Sci, Luntai Natl Fruit Germplasm Resources Garden, Luntai, Xinjiang, Peoples R China

期刊名称：SCIENTIFIC REPORTS （ 影响因子：4.38； 五年影响因子：5.134 ）

ISSN： 2045-2322

年卷期： 2021 年 11 卷 1 期

页码：

收录情况： SCI

摘要： To clarify the phytogeography of Prunus armeniaca L., two chloroplast DNA fragments (trnL-trnF and ycf1) and the nuclear ribosomal DNA internal transcribed spacer (ITS) were employed to assess genetic variation across 12 P. armeniaca populations. The results of cpDNA and ITS sequence data analysis showed a high the level of genetic diversity (cpDNA: H-T = 0.499; ITS: H-T = 0.876) and a low level of genetic differentiation (cpDNA: F-ST = 0.1628; ITS: F-ST = 0.0297) in P. armeniaca. Analysis of molecular variance (AMOVA) revealed that most of the genetic variation in P. armeniaca occurred among individuals within populations. The value of interpopulation differentiation (N-ST) was significantly higher than the number of substitution types (G(ST)), indicating genealogical structure in P. armeniaca. P. armeniaca shared genotypes with related species and may be associated with them through continuous and extensive gene flow. The haplotypes/genotypes of cultivated apricot populations in Xinjiang, North China, and foreign apricot populations were mixed with large numbers of haplotypes/genotypes of wild apricot populations from the Ili River Valley. The wild apricot populations in the Ili River Valley contained the ancestral haplotypes/genotypes with the highest genetic diversity and were located in an area considered a potential glacial refugium for P. armeniaca. Since population expansion occurred 16.53 kyr ago, the area has provided a suitable climate for the population and protected the genetic diversity of P. armeniaca.

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