Genetic diversity, population structure, and conservation of Sophora moorcroftiana (Fabaceae), a shrub endemic to the Tibetan Plateau
文献类型：期刊论文
| 作者 | Liu, ZM ; Zhao, AM ; Kang, XY ; Zhou, SL ; Lopez-Pujol, J |
| 刊名 | PLANT BIOLOGY
 |
| 出版日期 | 2006 |
| 卷号 | 8期号:1页码:81-92 |
| 关键词 | Sophora moorcroftiana allozymes genetic diversity population structure elevation conservation genetics Tibet |
| ISSN号 | 1435-8603 |
| 通讯作者 | Zhao, AM, E China Normal Univ, Sch Life Sci, N Zhongshan Rd 3663, Shanghai 200062, Peoples R China |
| 中文摘要 | Sophora moorcroftiana is a perennial leguminous low shrub endemic to the middle reaches of Yarlung Zangbo River in Tibet. It is an important species to fix sand dunes and to avoid the formation of shifting sands; therefore, its progressive over-exploitation may enhance land desertification. The levels and distribution of genetic variability of this species were evaluated from 10 natural populations at 24 loci encoding 13 enzymes, using allozyme analysis by starch gel electrophoresis. Data obtained revealed moderate levels of genetic variation within populations (P-p = 27.5%, A(p) = 1.5, H-ep = 0.122) and a considerable divergence among populations (F-ST = 0.199). Significant positive correlations (r(2) = 0.49, p < 0.05; r(2) = 0.46, p < 0.05) were found between elevation and both mean number of alleles per locus (A) and gene diversity (H-e) in the studied populations of S. moorcroftiana. Lower genetic diversity in lower elevation populations might be due to the negative effects of human pressures and habitat fragmentation, to adaptation to high altitudes as a consequence of a peripatric speciation process, or to directional gene flow along the river basin from the source populations located in the west at higher altitudes. The evaluation of the degree of threat has led to the inclusion of this species in the category of EN ("endangered"), and conservation strategies for this endemic species are discussed on the basis of these findings. |
| 学科主题 | Plant Sciences |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000235078600009 |
| 公开日期 | 2011-09-23 |
| 源URL | [http://210.72.129.5/handle/321005/55013]  |
| 专题 | 沈阳应用生态研究所_沈阳应用生态研究所_期刊论文 |
| 推荐引用方式 GB/T 7714 | Liu, ZM,Zhao, AM,Kang, XY,et al. Genetic diversity, population structure, and conservation of Sophora moorcroftiana (Fabaceae), a shrub endemic to the Tibetan Plateau[J]. PLANT BIOLOGY,2006,8(1):81-92. |
| APA | Liu, ZM,Zhao, AM,Kang, XY,Zhou, SL,&Lopez-Pujol, J.(2006).Genetic diversity, population structure, and conservation of Sophora moorcroftiana (Fabaceae), a shrub endemic to the Tibetan Plateau.PLANT BIOLOGY,8(1),81-92. |
| MLA | Liu, ZM,et al."Genetic diversity, population structure, and conservation of Sophora moorcroftiana (Fabaceae), a shrub endemic to the Tibetan Plateau".PLANT BIOLOGY 8.1(2006):81-92. |
入库方式： OAI收割
来源：沈阳应用生态研究所
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