A strong 'filter' effect of the East China Sea land bridge for East Asia's temperate plant species: inferences from molecular phylogeography and ecological niche modelling of Platycrater arguta (Hydrangeaceae).
A strong 'filter' effect of the East China Sea land bridge for East Asia's temperate plant species: inferences from molecular phylogeography and ecological niche modelling of Platycrater arguta (Hydrangeaceae).
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东海陆桥对东亚温带植物物种的强大“过滤”效应：来自分子系统发育地理学和软球藻（绣球科）生态位模型的推论
DOI：
10.1186/1471-2148-14-41
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发表时间：
2014-03-04
影响因子：
3.4
通讯作者：
Qiu YX
中科院分区：
文献类型：
--
作者：
Qi XS;Yuan N;Comes HP;Sakaguchi S;Qiu YX
在东亚，越来越多的温带森林树种研究发现，直到末次盛冰期（LGM），跨越东海陆桥的迁移和基因交换的证据。然而，这是不太清楚的时候，以及如何在这个地区的血统分歧，无论是在完全隔离或在面对后分歧基因流。在这里，我们调查了第四纪气候和海平面变化对Platycrater的进化和人口统计历史的影响，Platycrater是一种罕见的温带林下灌木，在中国东部间断分布（var. sinensis）和南日本（var. Escherichia coli）。从14个P. acutta种群获得的分子数据推断当前模式的分子结构和多样性与过去（末次间冰期和末次冰期最大）和现在的分布的基础上生态位模型（ENM）。一个基于聚结的隔离与迁移（IM）模型被用来估计谱系分歧时间和人口统计参数。结合核/叶绿体序列数据与核微卫星的信息，我们的IM分析确定了两个品种的遗传不同的单位，严格的异地自中更新世以来，c。0.89（0.51-1.2）Ma。再加上贝叶斯天际线图，我们的数据进一步表明，这两个谱系经历了后分歧人口增长，其次是避难所隔离，分歧，并在var的情况下。冰后期混合物。然而，过去的物种分布模型表明，物种的总体分布在末次冰期循环中没有发生太大变化。我们的研究结果强调了古代海平面变化对东亚温带植物群多样性的重要影响。隐含地，他们挑战了一般温带森林在ECS陆桥上扩张的概念，相反，他们证明了由于某些物种及其生物（例如，招聘）属性。
In East Asia, an increasing number of studies on temperate forest tree species find evidence for migration and gene exchange across the East China Sea (ECS) land bridge up until the last glacial maximum (LGM). However, it is less clear when and how lineages diverged in this region, whether in full isolation or in the face of post-divergence gene flow. Here, we investigate the effects of Quaternary changes in climate and sea level on the evolutionary and demographic history of Platycrater arguta, a rare temperate understorey shrub with disjunct distributions in East China (var. sinensis) and South Japan (var. arguta). Molecular data were obtained from 14 P. arguta populations to infer current patterns of molecular structure and diversity in relation to past (Last Interglacial and Last Glacial Maximum) and present distributions based on ecological niche modelling (ENM). A coalescent-based isolation-with-migration (IM) model was used to estimate lineage divergence times and population demographic parameters. Combining information from nuclear/chloroplast sequence data with nuclear microsatellites, our IM analyses identify the two varieties as genetically distinct units that evolved in strict allopatry since the mid-Pleistocene, c. 0.89 (0.51–1.2) Ma. Together with Bayesian Skyeline Plots, our data further suggest that both lineages experienced post-divergence demographic growth, followed by refugial isolation, divergence, and in the case of var. arguta post-glacial admixture. However, past species distribution modelling indicates that the species’ overall distribution has not greatly changed over the last glacial cycles. Our findings highlight the important influence of ancient sea-level changes on the diversification of East Asia’s temperate flora. Implicitly, they challenge the notion of general temperate forest expansion across the ECS land bridge, demonstrating instead its ‘filter’ effect owing to an unsuitable environment for certain species and their biological (e.g., recruitment) properties.
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影响因子：
4.9
作者：
Clement, M;Posada, D;Crandall, KA
通讯作者：
Crandall, KA
影响因子：
1.2
作者：
Chung, Chull-Hwan
通讯作者：
Chung, Chull-Hwan
影响因子：
3.4
作者：
Aoki K;Kato M;Murakami N
通讯作者：
Murakami N
中国南方中更新世黄土矿床物源的地球化学证据
影响因子：
4
作者：
Hao, Qingzhen;Guo, Zhengtang;Oldfield, Frank
通讯作者：
Oldfield, Frank
影响因子：
2.3
作者：
Han, Wenxia;Fang, Xiaomin;Berger, Andre
通讯作者：
Berger, Andre