A high frequency of allopolyploid speciation in the gymnospermous genus Ephedra and its possible association with some biological and ecological features
文献类型：期刊论文
| 作者 | Wu, Hui1; Ma, Zhen; Wang, Ming-Ming; Qin, Ai-Li; Ran, Jin-Hua; Wang, Xiao-Quan
|
| 刊名 | MOLECULAR ECOLOGY
 |
| 出版日期 | 2016 |
| 卷号 | 25期号:5页码:1192-1210 |
| 关键词 | ecological divergence Ephedra gymnosperm hybridization molecular phylogeny polyploid speciation |
| ISSN号 | 0962-1083 |
| DOI | 10.1111/mec.13538 |
| 文献子类 | Article |
| 英文摘要 | The origin and evolution of polyploids have been studied extensively in angiosperms and ferns but very rarely in gymnosperms. With the exception of three species of conifers, all natural polyploid species of gymnosperms belong to Ephedra, in which more than half of the species show polyploid cytotypes. Here, we investigated the origin and evolution of polyploids of Ephedra distributed in the Qinghai-Tibetan Plateau (QTP) and neighbouring areas. Flow cytometry (FCM) was used to measure the ploidy levels of the sampled species that are represented by multiple individuals from different populations, and then, two single-copy nuclear genes (LFY and DDB2) and two chloroplast DNA fragments were used to unravel the possible origins and maternal donors of the polyploids. The results indicate that the studied polyploid species are allopolyploids, and suggest that allotetraploidy is a dominant mode of speciation in Ephedra. The high percentage of polyploids in the genus could be related to some of its biological attributes such as vegetative propagation, a relatively high rate of unreduced gamete formation, and a small genome size relative to most other gymnosperms. Significant ecological divergences between allotetraploids and their putative progenitors were detected by PCAs and anova and Tukey's tests, with the exception of E.saxatilis. The overlap of geographical distributions and ecological niches of some diploid species could have provided opportunities for interspecific hybridization and allopolyploid speciation. |
| 学科主题 | Biochemistry & Molecular Biology ; Ecology ; Evolutionary Biology |
| 出版地 | HOBOKEN |
| 电子版国际标准刊号 | 1365-294X |
| WOS关键词 | QINGHAI-TIBET PLATEAU ; PHYLOGENETIC-RELATIONSHIPS ; EVOLUTIONARY CONSEQUENCES ; ASTERACEAE GNAPHALIEAE ; CLIMATIC NICHES ; FLOW-CYTOMETRY ; POLYPLOIDY ; GENOME ; PLANTS ; DNA |
| WOS研究方向 | Science Citation Index Expanded (SCI-EXPANDED) |
| 语种 | 英语 |
| WOS记录号 | WOS:000371433400012 |
| 出版者 | WILEY |
| 资助机构 | National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31330008, 31170197, 30730010] ; Chinese Academy of SciencesChinese Academy of Sciences [KJZD-EW-L07] ; Chinese Academy of Sciences (CAS/SAFEA International Partnership Program for Creative Research Teams) |
| 源URL | [http://ir.ibcas.ac.cn/handle/2S10CLM1/25014]  |
| 专题 | 植物研究所_系统与进化植物学研究中心_系统与进化植物学研究中心_学位论文 |
| 作者单位 | 1.Chinese Acad Sci, Inst Bot, State Key Lab Systemat & Evolutionary Bot, Beijing 100093, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu, Hui,Ma, Zhen,Wang, Ming-Ming,et al. A high frequency of allopolyploid speciation in the gymnospermous genus Ephedra and its possible association with some biological and ecological features[J]. MOLECULAR ECOLOGY,2016,25(5):1192-1210. |
| APA | Wu, Hui,Ma, Zhen,Wang, Ming-Ming,Qin, Ai-Li,Ran, Jin-Hua,&Wang, Xiao-Quan.(2016).A high frequency of allopolyploid speciation in the gymnospermous genus Ephedra and its possible association with some biological and ecological features.MOLECULAR ECOLOGY,25(5),1192-1210. |
| MLA | Wu, Hui,et al."A high frequency of allopolyploid speciation in the gymnospermous genus Ephedra and its possible association with some biological and ecological features".MOLECULAR ECOLOGY 25.5(2016):1192-1210. |
入库方式： OAI收割
来源：植物研究所
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