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题名: Genetic diversity within and among populations of the endangered species Taxus fuana (Taxaceae) from Pakistan and implications for its conservation
作者: Shah, Amin1, 2; null(李德铢)1; null(高连明)1; Li, Hong-Tao1, 2; Moeller, Michael3
刊名: BIOCHEMICAL SYSTEMATICS AND ECOLOGY
关键词: gene flow ; genetic diversity ; Pakistan ; population structure ; RAPD ; Taxus fuana
英文摘要: The West Himalayan yew, Taxus fuana Nan Li & R.R. Mill (Taxaceae), is an endangered species endemic to the Western Himalayas. An investigation of the genetic diversity of wild populations of T.fuana in Pakistan was undertaken. The genetic diversity and genetic structure was quantified using random amplified polymorphic DNA (RAPD) variation in 219 individuals of the 10 populations. Of the 32 universal primers screened 16 produced highly reproducible, clear RAPD bands. Using these primers, 193 discernible DNA fragments were generated, of which 164 (84.97%) were polymorphic. The statistical results indicated that there was a relatively low genetic diversity within populations (with percentages of polymorphic bands, PPB, ranging from 29.53 to 50.26%, with an average of 38.34% and a Nei's genetic diversity index (H-E) of 0.1165), and a high genetic differentiation among populations (G(ST) = 0.5842, Phi(ST) = 0.5685) within these populations. The gene flow (N-m) was low with only 0.3558. The distribution of genetic diversity revealed among the wild populations of T.fuana in Pakistan may result from their evolutionary history including habitat fragmentation, genetic drift combined with limited gene flow. The results are unexpected for an outcrossing, wind-pollinated and long-lived woody species. Based on these findings, conservation concerns are discussed together with possible strategies for implementing in situ and ex situ conservation. (c) 2007 Elsevier Ltd. All rights reserved.
出版日期: 2008-03-01
卷号: 36, 期号:3, 页码:183-193
DOI标识: 10.1016/j.bse.2007.09.012
语种: 英语
ISSN号: 0305-1978
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内容类型: 期刊论文
URI标识: http://ir.kib.ac.cn/handle/151853/2785
Appears in Collections:中国科学院东亚植物多样性与生物地理学重点实验室_期刊论文

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作者单位: 1.Chinese Acad Sci, Kunming Inst Bot, Key Lab Biodivers & Biogeog, Kunming 650204, Yunnan, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
3.Royal Bot Gardens, Edinburgh EH3 5LR, Midlothian, Scotland

Recommended Citation:
Shah, A; Li, DZ; Gao, LM; Li, HT; Moller, M.Genetic diversity within and among populations of the endangered species Taxus fuana (Taxaceae) from Pakistan and implications for its conservation,BIOCHEMICAL SYSTEMATICS AND ECOLOGY,2008,36(3):183-193
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