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Phylogeography of Camellia taliensis (Theaceae) inferred from chloroplast and nuclear DNA: insights into evolutionary history and conservation
Liu,Yang1; Yang,Shi-xiong2; Ji,Peng-zhang3; Gao,Li-zhi1
2012-06-21
发表期刊BMC Evolutionary Biology
ISSN1471-2148
卷号12期号:1
摘要AbstractBackgroundAs one of the most important but seriously endangered wild relatives of the cultivated tea, Camellia taliensis harbors valuable gene resources for tea tree improvement in the future. The knowledge of genetic variation and population structure may provide insights into evolutionary history and germplasm conservation of the species.ResultsHere, we sampled 21 natural populations from the species' range in China and performed the phylogeography of C. taliensis by using the nuclear PAL gene fragment and chloroplast rpl32-trnL intergenic spacer. Levels of haplotype diversity and nucleotide diversity detected at rpl32-trnL (h?=?0.841; π?=?0.00314) were almost as high as at PAL (h?=?0.836; π?=?0.00417). Significant chloroplast DNA population subdivision was detected (GST?=?0.988; NST?=?0.989), suggesting fairly high genetic differentiation and low levels of recurrent gene flow through seeds among populations. Nested clade phylogeographic analysis of chlorotypes suggests that population genetic structure in C. taliensis has been affected by habitat fragmentation in the past. However, the detection of a moderate nrDNA population subdivision (GST?=?0.222; NST?=?0.301) provided the evidence of efficient pollen-mediated gene flow among populations and significant phylogeographical structure (NST?>?GST; P?
DOI10.1186/1471-2148-12-92
语种英语
WOS记录号BMC:10.1186/1471-2148-12-92
出版者BioMed Central
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文献类型期刊论文
条目标识符http://ir.kib.ac.cn/handle/151853/61731
专题中国科学院昆明植物研究所
通讯作者Gao,Li-zhi
作者单位1.Kunming Institute of Botany, Chinese Academy of Sciences; Plant Germplasm and Genomics Center, Germplasm Bank of Wild Species
2.Kunming Institute of Botany, Chinese Academy of Sciences; Key Laboratory of Biodiversity and Biogeography
3.Yunnan Academy of Agricultural Sciences; Tea Research Institute
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Liu,Yang,Yang,Shi-xiong,Ji,Peng-zhang,et al. Phylogeography of Camellia taliensis (Theaceae) inferred from chloroplast and nuclear DNA: insights into evolutionary history and conservation[J]. BMC Evolutionary Biology,2012,12(1).
APA Liu,Yang,Yang,Shi-xiong,Ji,Peng-zhang,&Gao,Li-zhi.(2012).Phylogeography of Camellia taliensis (Theaceae) inferred from chloroplast and nuclear DNA: insights into evolutionary history and conservation.BMC Evolutionary Biology,12(1).
MLA Liu,Yang,et al."Phylogeography of Camellia taliensis (Theaceae) inferred from chloroplast and nuclear DNA: insights into evolutionary history and conservation".BMC Evolutionary Biology 12.1(2012).
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