Gene flow and genetic structure of a mountain riparian tree species, Euptelea pleiospermum (Eupteleaceae): how important is the stream dendritic network?
文献类型：期刊论文
| 作者 | Bao, Dachuan2; Wei, Xinzeng2; Meng, Hongjie1,2; Jiang, Mingxi2 |
| 刊名 | TREE GENETICS & GENOMES
 |
| 出版日期 | 2015-08-01 |
| 卷号 | 11期号:4页码:11 |
| 关键词 | Connectivity Genetic diversity Gene flow Landscape genetics Stream dendritic network Stream hierarchy model |
| ISSN号 | 1614-2942 |
| DOI | 10.1007/s11295-015-0886-6 |
| 英文摘要 | Riparian landscapes are dendritic in nature. However, much attention on genetic structure of riparian plants has been paid to linear models of connectivity while studies that investigate the influence of dendritic landscape are scarce. In this study, we used nuclear microsatellite markers to investigate genetic diversity, gene flow, and genetic structure of a streamside tree species (Euptelea pleiospermum) in a natural stream dendritic network in the Shennongjia Mountains, central China. We tested the following hypotheses: (1) genetic diversity is higher at confluence than that at headwater populations and (2) genetic structure within the stream dendritic network was determined by in-stream dispersal or out-of-stream dispersal. Contrary to our prediction, we found that both genetic diversity and effective population size are congruent at headwater and confluence populations. We found symmetrical gene flow in most (four out of six) headwater-confluence pairs and asymmetrically downstream gene flow in the other two headwater-confluence pairs. Analysis of molecular variance (AMOVA) detected significant differentiation at two scales (among streams within catchments, among populations within stream) and did not reveal significant structure among catchments. STRU CTURE analysis clustered individuals from different catchments into the same genetically homogeneous group. There was no significant isolation by distance (IBD) with Euclidean, stream, or overland distance. Our results suggest that E. pleiospermum populations within the stream dendritic network did not present a hierarchical genetic structure probably because of extensive out-of-stream dispersal. |
| 资助项目 | National Natural Science Foundation of China[31100344] ; National Natural Science Foundation of China[31270562] ; Key Laboratory of Aquatic Botany and Watershed Ecology, CAS[Y455432J02] ; Youth Innovation Promotion Association, CAS[2014314] |
| WOS研究方向 | Forestry ; Genetics & Heredity ; Agriculture |
| 语种 | 英语 |
| WOS记录号 | WOS:000359417100001 |
| 出版者 | SPRINGER HEIDELBERG |
| 源URL | [http://202.127.146.157/handle/2RYDP1HH/228]  |
| 专题 | 中国科学院武汉植物园 |
| 通讯作者 | Jiang, Mingxi |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Wuhan Bot Garden, Key Lab Aquat Bot & Watershed Ecol, Wuhan 430074, Hubei, Peoples R China |
| 推荐引用方式 GB/T 7714 | Bao, Dachuan,Wei, Xinzeng,Meng, Hongjie,et al. Gene flow and genetic structure of a mountain riparian tree species, Euptelea pleiospermum (Eupteleaceae): how important is the stream dendritic network?[J]. TREE GENETICS & GENOMES,2015,11(4):11. |
| APA | Bao, Dachuan,Wei, Xinzeng,Meng, Hongjie,&Jiang, Mingxi.(2015).Gene flow and genetic structure of a mountain riparian tree species, Euptelea pleiospermum (Eupteleaceae): how important is the stream dendritic network?.TREE GENETICS & GENOMES,11(4),11. |
| MLA | Bao, Dachuan,et al."Gene flow and genetic structure of a mountain riparian tree species, Euptelea pleiospermum (Eupteleaceae): how important is the stream dendritic network?".TREE GENETICS & GENOMES 11.4(2015):11. |
入库方式： OAI收割
来源：武汉植物园
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