文献类型： 外文期刊
第一作者： Zhang, Yan
作者： Zhang, Yan;Wang, Li;Abudurezike, Abudukeyoumu;Yan, Qingqing;Lu, Zifeng;Wang, Yonggang;Xu, Lin;Ren, Hailong;Zhang, Xuechao;Gao, Qiang;Nie, Qiuhai;Zhang, Zhibin
作者机构：
关键词： adaptation; population genetic diversity; population structure; rubber dandelion; SNP
期刊名称：ECOLOGY AND EVOLUTION （ 影响因子：2.392； 五年影响因子：2.749 ）
ISSN： 2045-7758
年卷期：
页码：
收录情况： SCI
摘要： Taraxacum kok-saghyz Rodin (TKS) is an important potential alternative source of natural inulin and rubber production, which has great significance for the production of industrial products. In this study, we sequenced 58 wild TKS individuals collected from four different geography regions worldwide to elucidate the population structure, genetic diversity, and the patterns of evolution. Also, the first flowering time, crown diameter, morphological characteristics of leaf, and scape of all TKS individuals were measured and evaluated statistically. Phylogenetic analysis based on SNPs and cluster analysis based on agronomic traits showed that all 58 TKS individuals could be roughly divided into three distinct groups: (a) Zhaosu County in Xinjiang (population AB, including a few individuals from population C and D); (b) Tekes County in Xinjiang (population C); and (c) Tuzkol lake in Kazakhstan (population D). Population D exhibited a closer genetic relationship with population C compared with population AB. Genetic diversity analysis further revealed that population expansion from C and D to AB occurred, as well as gene flow between them. Additionally, some natural selection regions were identified in AB population. Function annotation of candidate genes identified in these regions revealed that they mainly participated in biological regulation processes, such as transporter activity, structural molecule activity, and molecular function regulator. We speculated that the genes identified in selective sweep regions may contribute to TKS adaptation to the Yili River Valley of Xinjiang. In general, this study provides new insights in clarifying population structure and genetic diversity analysis of TKS using SNP molecular markers and agronomic traits.
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