Genetic structure and phylogeography of a relict tree fern, Sphaeropteris brunoniana (Cyatheaceae) from China and Laos inferred from cpDNA sequence variations: Implications for conservation

doi:10.1111/j.1759-6831.2010.00108.x

	Genetic structure and phylogeography of a relict tree fern, Sphaeropteris brunoniana (Cyatheaceae) from China and Laos inferred from cpDNA sequence variations: Implications for conservation
	Wang, Zi-Juan1,2 ; Guan, Kai-Yun 1
通讯作者	Guan, KY (reprint author), Chinese Acad Sci, Kunming Inst Bot, Kunming 650204, Peoples R China
	2011
发表期刊	JOURNAL OF SYSTEMATICS AND EVOLUTION
ISSN	1674-4918
卷号	49 期号:1 页码:72-79
摘要	In this study, we analyzed the genetic structure and phylogeography of Sphaeropteris brunoniana from China and Laos. Combining cpDNA trnL-trnF and atpB-rbcL sequence variations, five haplotypes were identified from the 10 investigated populations. Moderate haplotype diversity (h = 0.66580) and low nucleotide diversity (pi = 0.23 x 10(-3)) were detected. The S. brunoniana in Yunnan region had much higher genetic diversity (h = 0.60195, pi = 0.35 x 10(-3)) than that of Hainan-Laos (h = 0.00000, pi = 0.00). A high level of genetic differentiation (94.74%) between the two regions was revealed by AMOVA. Nested clade analysis identified two major clusters of the five haplotypes, one clade in the Yunnan region and the other in Hainan-Laos. The analysis indicated that restricted gene flow with isolation by distance and allopatric fragmentation were likely the major processes that shaped the spatial distribution of the haplotypes. The isolated distribution of clades implied the emergence of independent refugia of this species in each region during Quaternary glaciations. The Yunnan populations frequently contained an ancestral haplotype, and most of them harbored other descendent haplotypes. Based on the distribution pattern of haplotypes and the nested clade analysis results, the Yunnan region potentially had several refugia of this species during glacial periods, whereas the Hainan populations were probable new colonizations.
关键词	Atpb-rbcl Hainan-laos Phylogeography Sphaeropteris Brunoniana Trnl-trnf Yunnan
学科领域	Plant Sciences
DOI	10.1111/j.1759-6831.2010.00108.x
收录类别	SCI
语种	英语
WOS记录号	WOS:000287469100006
引用统计	被引频次：13[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/5297
专题	资源植物与生物技术所级重点实验室
作者单位	1.Chinese Acad Sci, Kunming Inst Bot, Kunming 650204, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Wang, Zi-Juan,Guan, Kai-Yun. Genetic structure and phylogeography of a relict tree fern, Sphaeropteris brunoniana (Cyatheaceae) from China and Laos inferred from cpDNA sequence variations: Implications for conservation[J]. JOURNAL OF SYSTEMATICS AND EVOLUTION,2011,49(1):72-79.
APA	Wang, Zi-Juan,&Guan, Kai-Yun.(2011).Genetic structure and phylogeography of a relict tree fern, Sphaeropteris brunoniana (Cyatheaceae) from China and Laos inferred from cpDNA sequence variations: Implications for conservation.JOURNAL OF SYSTEMATICS AND EVOLUTION,49(1),72-79.
MLA	Wang, Zi-Juan,et al."Genetic structure and phylogeography of a relict tree fern, Sphaeropteris brunoniana (Cyatheaceae) from China and Laos inferred from cpDNA sequence variations: Implications for conservation".JOURNAL OF SYSTEMATICS AND EVOLUTION 49.1(2011):72-79.

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