A range wide geographic pattern of genetic diversity and population structure of Hexinia polydichotoma (Asteraceae) in Tarim Basin and adjacent areas
文献类型：期刊论文
| 作者 | Su Zhihao; Zhang Mingli1 |
| 刊名 | BIOCHEMICAL SYSTEMATICS AND ECOLOGY
 |
| 出版日期 | 2014 |
| 卷号 | 56页码:49-59 |
| 关键词 | Hexinia polydichotoma Genetic diversity Evolutional process Geographic pattern |
| ISSN号 | 0305-1978 |
| DOI | 10.1016/j.bse.2014.04.005 |
| 文献子类 | Article |
| 英文摘要 | In order to investigate the genetic diversity and influence of climate oscillations on evolutionary processes of organisms in northwest China, we selected Hexinia polydichotoma, a species endemic to China, and examined the geographic pattern of genetic variation in its entire cover range, Tarim Basin and adjacent areas. In the study, 22 chloroplast (cp) haplotypes were identified based on two cpDNA sequences (trnH psbA and ycf6-psbM), and five ITS sequence variations were found. Shown in the cp haplotype network, the two common cp haplotypes mainly distributed along the northern and southern rims of the basin respectively and intersected in the center of the basin, whereas in the ITS network, ITS genotype 1 was widespread across the whole distribution area, and rare genotypes were concentrated in the western rim of the basin. Genetic variation primarily occurred among populations and SAMOVA groups. Fragmented desert habitat may have caused gene flow barrier among populations or groups far from each other, leading to significant genetic differentiation at these levels. It appears that expansion and contraction cycles of river systems and oases during the middle Pleistocene was the source of the observed fragmentation. Geographic range expansion in H. polydichotoma was supported by the significant value for Tajima's D, Fu's F-S, and by a unimodal mismatch distribution. It was possible that the enlargement of the Taklimakan Desert during the middle Pleistocene may have provided appropriate conditions for the range dispersal. We identified western rim of the basin as the center of genetic diversity of H. polydichotoma based on the present dataset. (C) 2014 Elsevier Ltd. All rights reserved. |
| 学科主题 | Biochemistry & Molecular Biology ; Ecology ; Evolutionary Biology |
| 出版地 | OXFORD |
| 电子版国际标准刊号 | 1873-2925 |
| WOS关键词 | CHLOROPLAST DNA VARIATION ; NORTH-WESTERN CHINA ; MICROSATELLITE MARKERS ; CLIMATIC CHANGES ; DESERT SHRUB ; EVOLUTION ; MITOCHONDRIAL ; NUCLEAR ; PHYLOGEOGRAPHY ; POLYMORPHISM |
| WOS研究方向 | Biochemistry & Molecular Biology ; Environmental Sciences & Ecology ; Evolutionary Biology |
| 语种 | 英语 |
| WOS记录号 | WOS:000343385000007 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 资助机构 | China National Key Basic Research Program of Xinjiang Institute of Ecology and Geography, Chinese Academy of Science [2014CB954201] |
| 源URL | [http://ir.ibcas.ac.cn/handle/2S10CLM1/27235]  |
| 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, Xinjiang Inst Ecol & Geog, Key Lab Biogeog & Bioresource Arid Land, Urumqi 830011, Peoples R China 2.Chinese Acad Sci, Inst Bot, Beijing 100093, Peoples R China |
| 推荐引用方式 GB/T 7714 | Su Zhihao,Zhang Mingli. A range wide geographic pattern of genetic diversity and population structure of Hexinia polydichotoma (Asteraceae) in Tarim Basin and adjacent areas[J]. BIOCHEMICAL SYSTEMATICS AND ECOLOGY,2014,56:49-59. |
| APA | Su Zhihao,&Zhang Mingli.(2014).A range wide geographic pattern of genetic diversity and population structure of Hexinia polydichotoma (Asteraceae) in Tarim Basin and adjacent areas.BIOCHEMICAL SYSTEMATICS AND ECOLOGY,56,49-59. |
| MLA | Su Zhihao,et al."A range wide geographic pattern of genetic diversity and population structure of Hexinia polydichotoma (Asteraceae) in Tarim Basin and adjacent areas".BIOCHEMICAL SYSTEMATICS AND ECOLOGY 56(2014):49-59. |
入库方式： OAI收割
来源：植物研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。