The phylogeography of Fagus hayatae (Fagaceae): genetic isolation among   populations

doi:10.1002/ece3.2042

CORC > 北京大学 > 生命科学学院

	The phylogeography of Fagus hayatae (Fagaceae): genetic isolation among populations
	Ying, Ling-Xiao ; Zhang, Ting-Ting ; Chiu, Ching-An ; Chen, Tze-Ying ; Luo, Shu-Jin ; Chen, Xiao-Yong ; Shen, Ze-Hao
刊名	ECOLOGY AND EVOLUTION
	2016
关键词	cpDNA sequence fragments Fagus hayatae genetic isolation nDNA SSR loci phylogeography CHLOROPLAST DNA PHYLOGEOGRAPHY MICROSATELLITE NULL ALLELES HUMAN MITOCHONDRIAL-DNA CRENATA BLUME F-STATISTICS INTRASPECIFIC VARIATION NONCODING REGIONS PLANT-POPULATIONS SYLVATICA L. EAST-ASIA
DOI	10.1002/ece3.2042
英文摘要	The beech species Fagus hayatae is an important relict tree species in subtropical China, whose biogeographical patterns may reflect floral responses to climate change in this region during the Quaternary. Previous studies have revealed phylogeography for three of the four Fagus species in China, but study on F. hayatae, the most sparsely distributed of these species, is still lacking. Here, molecular methods based on eight simple sequence repeat (SSR) loci of nuclear DNA (nDNA) and three chloroplast DNA (cpDNA) sequences were applied for analyses of genetic diversity and structure in 375 samples from 14 F. hayatae populations across its whole range. Both nDNA and cpDNA indicated a high level of genetic diversity in this species. Significant fixation indexes and departures from the Hardy-Weinberg equilibrium, with a genetic differentiation parameter of R-st of 0.233, were detected in nDNA SSR loci among populations, especially those on Taiwan Island, indicating strong geographic partitioning. The populations were classified into two clusters, without a prominent signal of isolation-by-distance. For the 15 haplotypes detected in the cpDNA sequence fragments, there was a high genetic differentiation parameter (G(st) = 0.712) among populations. A high G(st) of 0.829 was also detected outside but not within the Sichuan Basin. Consistent with other Fagus species in China, no recent population expansion was detected from tests of neutrality and mismatch distribution analysis. Overall, genetic isolation with limited gene flow was prominent for this species and significant phylogeographic structures existed across its range except for those inside the Sichuan Basin. Our study suggested long-term geographic isolation in F. hayatae with limited population admixture and the existence of multiple refugia in the mountainous regions of the Sichuan Basin and southeast China during the Quaternary. These results may provide useful information critical for the conservation of F. hayatae and other Chinese beech species.; Natural Science Foundation of China [31170449, 31321061]; National Natural Science Foundation of China [31170449, 31321061]; SCI(E); PubMed; ARTICLE; shzh@pku.edu.cn; 9; 2805-2816; 6
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/434165]
专题	生命科学学院城市与环境学院
推荐引用方式 GB/T 7714	Ying, Ling-Xiao,Zhang, Ting-Ting,Chiu, Ching-An,et al. The phylogeography of Fagus hayatae (Fagaceae): genetic isolation among populations[J]. ECOLOGY AND EVOLUTION,2016.
APA	Ying, Ling-Xiao.,Zhang, Ting-Ting.,Chiu, Ching-An.,Chen, Tze-Ying.,Luo, Shu-Jin.,...&Shen, Ze-Hao.(2016).The phylogeography of Fagus hayatae (Fagaceae): genetic isolation among populations.ECOLOGY AND EVOLUTION.
MLA	Ying, Ling-Xiao,et al."The phylogeography of Fagus hayatae (Fagaceae): genetic isolation among populations".ECOLOGY AND EVOLUTION (2016).