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-Yun1
2011
发表期刊JOURNAL OF SYSTEMATICS AND EVOLUTION
ISSN1674-4918
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
资助信息National Natural Science Foundation of China[J0921030, 30870243]
学科领域Plant Sciences
DOI10.1111/j.1759-6831.2010.00108.x
收录类别SCI
语种英语
WOS研究方向Plant Sciences
WOS类目Plant Sciences
WOS记录号WOS:000287469100006
引用统计
被引频次:6[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
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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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