Genetic diversity in fragmented populations of Berchemiella wilsonii var. pubipetiolata (Rhamnaceae)
文献类型：期刊论文
| 作者 | Kang, M; Jiang, MX; Huang, HW |
| 刊名 | ANNALS OF BOTANY
 |
| 出版日期 | 2005-06-01 |
| 卷号 | 95期号:7页码:1145-1151 |
| 关键词 | Berchemiella wilsonii var. pubipetiolata allozyme habitat fragmentation genetic diversity heterozygote excess conservation genetics |
| ISSN号 | 0305-7364 |
| DOI | 10.1093/aob/mci125 |
| 英文摘要 | Backgroud and Aims Berchemiella wilsonii var. pubipetiolata (Rhamnaceae) is distributed in fragmented habitat patches in eastern China. It is highly endangered because of severe disturbance by anthropogenic activities. Information on genetic variation and structure is critical for developing successful conservation strategies for this species. Methods Allozyme variation of population genetic diversity and structure was investigated for a total of 98 individuals sampled from four extant populations using isoelectric focusing in thin-layer polyacrylamide slab gels. Key Results Based on 20 loci scored from the nine enzymes examined, a high genetic diversity was detected at both the species and population level, while there was a loss of low frequency alleles (< 0.1) in all populations. Most loci showed deviation from Hardy-Weinberg equilibrium due to excess of heterozygotes in all populations, suggesting that selection for heterozygmes has occurred in this species. The genetic diversity was mainly found within populations with a moderate genetic differentiation (F-ST = 0.13), but the two geographically discontinuous population groups showed significant differences, with F-statistic values of 0.078 for the Zhejiang populations and 0.014 for the Anhui populations, respectively. Conclusions It appears most likely that this species has experienced a recent decrease in population size, and genetic drift in small populations has resulted in a loss of alleles occurring at low frequency. The differentiation into two population groups reflects a population genetic consequence that has been influenced by the different land-use in the two regions. Some conservation concerns are discussed together with possible strategies for implementing in situ and ex situ conservation. |
| WOS研究方向 | Plant Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000229583500007 |
| 出版者 | OXFORD UNIV PRESS |
| 源URL | [http://202.127.146.157/handle/2RYDP1HH/1195]  |
| 专题 | 中国科学院武汉植物园 |
| 通讯作者 | Huang, HW |
| 作者单位 | Chinese Acad Sci, Wuhan Bot Garden, Wuhan Inst Bot, Wuhan 430074, Hubei, Peoples R China |
| 推荐引用方式 GB/T 7714 | Kang, M,Jiang, MX,Huang, HW. Genetic diversity in fragmented populations of Berchemiella wilsonii var. pubipetiolata (Rhamnaceae)[J]. ANNALS OF BOTANY,2005,95(7):1145-1151. |
| APA | Kang, M,Jiang, MX,&Huang, HW.(2005).Genetic diversity in fragmented populations of Berchemiella wilsonii var. pubipetiolata (Rhamnaceae).ANNALS OF BOTANY,95(7),1145-1151. |
| MLA | Kang, M,et al."Genetic diversity in fragmented populations of Berchemiella wilsonii var. pubipetiolata (Rhamnaceae)".ANNALS OF BOTANY 95.7(2005):1145-1151. |
入库方式： OAI收割
来源：武汉植物园
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