Molecular phylogeography of East Asian Kirengeshoma (Hydrangeaceae) in relation to quaternary climate change and landbridge configurations.
Molecular phylogeography of East Asian Kirengeshoma (Hydrangeaceae) in relation to quaternary climate change and landbridge configurations.
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DOI：
10.1111/j.1469-8137.2009.02876.x
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发表时间：
2009-07
期刊：
影响因子：
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通讯作者：
Y. Qiu;Yi Sun;Xiao-ping Zhang;Joongku Lee;C. Fu;H. Comes
中科院分区：
文献类型：
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作者：
Y. Qiu;Yi Sun;Xiao-ping Zhang;Joongku Lee;C. Fu;H. Comes
黄喉龙由两个种组成，分别栖息于中国东部/日本南部（黄喉龙palmata）和韩国（黄喉龙koreana）的暖温带落叶林。为探讨东海沿岸一个植物类群的种群历史，对中国东部沿海一个植物类群进行了叶绿体DNA（cp）和简单重复序列间（ISSRs）变异的研究。CpDNA和ISSRs结果显示，中国和日本之间的遗传差异较低，与属内分类一致。分子测年表明K. koreana在上新世-更新世边界与日本种群分离，而后者在早更新世至中更新世通过ECS盆地迁移到中国。中国人和日本人的替代分离可能发生在更新世中期。不匹配分布和中性检验表明，中国人口扩大了他们的范围在晚更新世，可能是在一个寒冷的时期，而来自日本的人口没有显着的增长。我们的结论是，目前的分布和分化的组件目前孤立的暖温带落叶林在中国，日本和韩国可能是由于相对古老的替代和移民事件的组合，和那些来自日本的特别敏感的范围碎片化和长期的避难所隔离整个晚更新世。
Kirengeshoma comprises two species inhabiting warm temperate-deciduous forests in East China/South Japan (Kirengeshoma palmata) and South Korea (Kirengeshoma koreana). A survey of chloroplast (cp) DNA and inter-simple sequence repeats (ISSRs) variation in Kirengeshoma was carried out to determine the population history of a plant taxon around the East China Sea (ECS). CpDNA and ISSRs revealed lower genetic divergence between China and Japan relative to the other contrasts, in line with intrageneric classification. Molecular dating suggests that K. koreana diverged at the Plio-Pleistocene boundary from the Japanese populations, whereas the latter migrated into China during the early-to-mid Pleistocene via the ECS basin. Vicariant segregation of Chinese and Japanese populations likely occurred during the mid-Pleistocene. Mismatch distributions and neutrality tests indicated that Chinese populations expanded their range during the Late Pleistocene, probably during a cold period, whereas those from Japan showed no significant population growth. We conclude that the current distribution and differentiation of components of presently isolated warm temperate-deciduous forests in China, Japan and Korea likely resulted from a combination of relatively ancient vicariant and immigration events, and those from Japan were particularly sensitive to range fragmentation and long-term refugial isolation throughout the Late Pleistocene.