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题名: Phylogeographic structure of Terminalia franchetii (Combretaceae) in southwest China and its implications for drainage geological history
作者: Zhang, Ticao1, 2; Sun Hang(孙航)1
刊名: JOURNAL OF PLANT RESEARCH
关键词: AFLP ; Phylogeography ; River capture ; Southwest China ; Terminalia franchetii
英文摘要: Following the rapid uplift of the Qinghai-Tibetan Plateau, the reorganization of the major river drainages in southwest China was primarily caused by river capture events. However, the impact of these past changes in drainage patterns on the current distribution and genetic structure of the endemic flora of this region remains largely unknown. Here we report a survey of amplified fragment length polymorphism (AFLP) in Terminalia franchetii, an endemic shrub or small tree of the deep and dry-hot river valleys of this region. We surveyed AFLP variation within and among 21 populations (251 individuals) of T. franchetii, distributed disjunctively between northern and southern drainage systems. Using STRUCTURE, principal coordinates analysis, and genetic distance methods, we identified two main population genetic groups (I and II) and four subgroups within the species, as follows: (I) the Upper Jinshajiang Valley (subgroup I-(north)) and the Honghe drainage area (subgroup I-(south)); (II) the Middle and Lower Jinshajiang and Yalongjiang Valleys (subgroup II(north)) and the Nanpanjiang drainage area (subgroup II(south)). Genetic diversity was lower in group I than in group II. According to the genetic diversity and genetic structure results, we suggest that the modern disjunctive distribution and associated patterns of genetic structure of T. franchetii result from vicariance caused by several historical drainage capture events, involving the separation of the Upper Jinshajiang, Yalongjiang and Daduhe from the Honghe or Nanpanjiang in southwest China.
出版日期: 2011
卷号: 124, 期号:1, 页码:63-73
DOI标识: 10.1007/s10265-010-0360-3
语种: 英语
ISSN号: 0918-9440
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.kib.ac.cn/handle/151853/3000
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 100039, Peoples R China

Recommended Citation:
Zhang, TC; Sun, H.Phylogeographic structure of Terminalia franchetii (Combretaceae) in southwest China and its implications for drainage geological history,JOURNAL OF PLANT RESEARCH,2011,124(1):63-73
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