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

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	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
刊名	JOURNAL OF SYSTEMATICS AND EVOLUTION
	2011
卷号	49 期号:1 页码:72-79
关键词	atpB-rbcL Hainan-Laos phylogeography Sphaeropteris brunoniana trnL-trnF Yunnan
ISSN号	1674-4918
通讯作者	Guan, KY (reprint author), Chinese Acad Sci, Kunming Inst Bot, Kunming 650204, Peoples R China
英文摘要	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.
学科主题	Plant Sciences
类目[WOS]	Plant Sciences
研究领域[WOS]	Plant Sciences
关键词[WOS]	CHLOROPLAST DNA ; POPULATION-GROWTH ; GEOGRAPHICAL-DISTRIBUTION ; ALSOPHILA-SPINULOSA ; STATISTICAL TESTS ; UNIVERSAL PRIMERS ; ICE AGES ; NEUTRALITY ; ATPB ; AMPLIFICATION
收录类别	SCI
资助信息	National Natural Science Foundation of China[J0921030, 30870243]
语种	英语
WOS记录号	WOS:000287469100006
公开日期	2012-04-10
内容类型	期刊论文
源URL	[http://ir.kib.ac.cn/handle/151853/5297]
专题	昆明植物研究所_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.