Phylogeographic structure of Terminalia franchetii (Combretaceae) in southwest China and its implications for drainage geological history
Zhang, Ticao1,2; Sun, Hang1
2011
发表期刊JOURNAL OF PLANT RESEARCH
ISSN0918-9440
卷号124期号:1页码:63-73
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.
关键词Aflp Phylogeography River Capture Southwest China Terminalia Franchetii
资助信息National 973 Project [2007CB411601]; Natural Science Foundation of China [30625004, 40771073]; Yunnan Natural Science Foundation [2008CC013]
收录类别SCI
语种英语
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文献类型期刊论文
条目标识符http://ir.kib.ac.cn/handle/151853/3000
专题中国科学院东亚植物多样性与生物地理学重点实验室
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
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Zhang, Ticao,Sun, Hang. Phylogeographic structure of Terminalia franchetii (Combretaceae) in southwest China and its implications for drainage geological history[J]. JOURNAL OF PLANT RESEARCH,2011,124(1):63-73.
APA Zhang, Ticao,&Sun, Hang.(2011).Phylogeographic structure of Terminalia franchetii (Combretaceae) in southwest China and its implications for drainage geological history.JOURNAL OF PLANT RESEARCH,124(1),63-73.
MLA Zhang, Ticao,et al."Phylogeographic structure of Terminalia franchetii (Combretaceae) in southwest China and its implications for drainage geological history".JOURNAL OF PLANT RESEARCH 124.1(2011):63-73.
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