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Molecular Phylogeography Analysis Reveals Population Dynamics and Genetic Divergence of a Widespread Tree Pterocarya stenoptera in China.
Qian, Zhi-Hao; Li, Yong; Li, Ming-Wan; He, Yan-Xia; Li, Jia-Xin; Ye, Xiao-Fan.
Afiliação
  • Qian ZH; Innovation Platform of Molecular Biology, College of Forestry, Henan Agricultural University, Zhengzhou, China.
  • Li Y; Innovation Platform of Molecular Biology, College of Forestry, Henan Agricultural University, Zhengzhou, China.
  • Li MW; Innovation Platform of Molecular Biology, College of Forestry, Henan Agricultural University, Zhengzhou, China.
  • He YX; School of Life Sciences, Henan University, Kaifeng, China.
  • Li JX; Innovation Platform of Molecular Biology, College of Forestry, Henan Agricultural University, Zhengzhou, China.
  • Ye XF; Innovation Platform of Molecular Biology, College of Forestry, Henan Agricultural University, Zhengzhou, China.
Front Genet ; 10: 1089, 2019.
Article em En | MEDLINE | ID: mdl-31737056
ABSTRACT
The geological events, past climatic fluctuations, and river systems played key roles in the spatial distribution, population dynamics, and genetic differentiation of species. In this work, we selected Pterocarya stenoptera, a widespread tree species in China, to test the roles of these factors. Four noncoding spacers, eight microsatellite (simple sequence repeat) markers, and species distribution modeling were used to examine the phylogeographical pattern of P. stenoptera. Based on chloroplast DNA data, populations of P. stenoptera were clearly clustered into three groups. The divergence time of these groups fell into the stage of the Qinghai-Tibet Movement, 1.7-2.6 Ma. For simple sequence repeat data, only one western marginal population YNYB could be separated from other populations, whereas other populations were mixed together. Our results indicated that the environmental heterogeneity resulting from the Qinghai-Tibet movement might be response for this genetic divergence. The climatic fluctuations in the Pleistocene did not cause the substantial range shift of P. stenoptera, while the fluctuations affected its population size. Moreover, we also confirmed the river systems did not act as channels or barrier of dispersal for P. stenoptera.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Tipo de estudo: Prognostic_studies Idioma: En Revista: Front Genet Ano de publicação: 2019 Tipo de documento: Article País de afiliação: China

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Tipo de estudo: Prognostic_studies Idioma: En Revista: Front Genet Ano de publicação: 2019 Tipo de documento: Article País de afiliação: China