]*>","")" /> Repeated Range Expansion and Glacial Endurance of <em>Potentilla glabra</em> (Rosaceae) in the Qinghai-Tibetan Plateau

J Integr Plant Biol ›› 2009, Vol. 51 ›› Issue (7): 698-706.DOI: 10.1111/j.1744-7909.2009.00818.x

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Repeated Range Expansion and Glacial Endurance of Potentilla glabra (Rosaceae) in the Qinghai-Tibetan Plateau

Liu-Yang Wang1,2,4, Hiroshi Ikeda3, Teng-Liang Liu2, Yu-Jin Wang1,2 and Jian-Quan Liu2* *   

  • 收稿日期:2008-10-03 接受日期:2008-12-29 出版日期:2009-05-21 发布日期:2009-05-21

Repeated Range Expansion and Glacial Endurance of Potentilla glabra (Rosaceae) in the Qinghai-Tibetan Plateau

Liu-Yang Wang1,2,4, Hiroshi Ikeda3, Teng-Liang Liu2, Yu-Jin Wang1,2 and Jian-Quan Liu2* *   

  1. 1 Key Laboratory of Adaptation and Evolution of Plateau Biota, Northwest Institute of Plateau Biology, the Chinese Academy of Sciences, Xining 810001, China
    2 Institute of Molecular Ecology, MOE Key Laboratory of Arid and Grassland Ecology, School of Life Science, Lanzhou University, Lanzhou 730000, China
    3 Department of Botany, the University Museum, the University of Tokyo, Tokyo 113-0033, Japan
    4 Graduate University of the Chinese Academy of Sciences, Beijing 100049, China
  • Received:2008-10-03 Accepted:2008-12-29 Online:2009-05-21 Published:2009-05-21
  • About author:
    * *Author for correspondence. Tel: +86 931 891 4305; Fax: +86 931 891 4288; E-mail: liujq@nwipb.ac.cn or ljqdxy@public.xn.qh.cn

被引次数

119

Abstract:

To date, little is still known about how alpine species occurring in the Qinghai-Tibetan Plateau (QTP) responded to past climatic oscillations. Here, by using variations of the chloroplast trnT-L, we examined the genetic distribution pattern of 101 individuals of Potentilla glabra, comprising both the interior QTP and the plateau edge. Phylogenetic and network analyses of 31 recovered haplotypes identified three tentative clades (A, B and C). Analysis of molecular variance (AMOVA) revealed that most of the genetic variability was found within populations (0.693), while differentiations between populations were obviously distinct (Fst = 0.307). Two independent range expansions within clades A and B occurring at approximately 316 and 201 thousand years ago (kya) were recovered from the hierarchical mismatch analysis, and these two expansions were also confirmed by Fu’s FS values and ‘g’ tests. However, distant distributions of clade C and private haplotypes from clades A and B suggest that they had survived the Last Glacial Maximum (LGM) and previous glaciers in situ since their origins. Our findings based on available limited samples support that multiple refugia of a few cold-enduring species had been maintained in the QTP platform during LGM and/or previous glacial stages.

Wang LY, Ikeda H, Liu TL, Wang YJ, Liu JQ (2009). Repeated range expansion and glacial endurance of Potentilla glabra (Rosaceae) in the Qinghai-Tibetan Plateau. J. Integr. Plant Biol. 51(7), 698-706.

Key words: Potentilla glabra, trnT-L, Phylogeography, Qinghai-Tibetan Plateau, range expansion, glacial refugia.

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