New insight into the phylogenetic and biogeographic history of genus Ficus: Vicariance played a relatively minor role compared with ecological opportunity and dispersal
New insight into the phylogenetic and biogeographic history of genus Ficus: Vicariance played a relatively minor role compared with ecological opportunity and dispersal
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对榕属系统发育和生物地理学历史的新见解：与生态机会和扩散相比，替代性发挥的作用相对较小
DOI：
10.1111/j.1759-6831.2011.00155.x
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发表时间：
2011-11
影响因子：
3.7
通讯作者：
Rhett D. Harrison
中科院分区：
文献类型：
--
作者：
Rhett D. Harrison
对热带分类群演化的研究强调了地理迁移和冈瓦纳大陆的分裂在解释现代分布中的作用。无花果（Ficus spp.）支持这一观点。在目前的研究中，我们使用了一个扩大的样本（208种）。并改进了分子测年技术，重建了榕属的系统发育和地理历史。与以往的研究一致，我们的地理分析表明，榕树的祖先是在冈瓦纳。然而，一个依赖于BEAST中不相关速率的宽松的时钟分析表明，新热带区Pharmacosycea在南美洲86.67 Mya分裂，其他榕树谱系祖先起源于印度。大部分的基底谱系似乎已经分化后KT灭绝，然后迅速多样化后，印度与亚洲大陆碰撞。非洲热带物种很可能最初在印度次大陆进化，然后在马达加斯加白垩纪晚期甚至更晚的始新世印度与亚洲碰撞之后散布到非洲。美洲新热带区，在始新世末全球变冷事件之前，要么是岛屿跳跃到南美洲，要么是通过欧洲向北方路线到达美洲。榕属植物可能是在印度与亚洲碰撞后到达马来西亚东部的，然后广泛分布。鉴于我们的日期估计范围很广，其他几种情况也是可能的。然而，与以前的报道相反，我们的分析表明，与生态机会和扩散相比，在榕树属的多样化中，替代作用相对较小。
Studies on the evolution of tropical taxa emphasize the role of vicariance and the break‐up of Gondwana in explaining modern distributions. Earlier studies on figs (Ficus spp.) support this view. In the current study, we used an expanded sample (208 spp.) and improved molecular dating techniques to reconstruct the phylogenetic and biogeographic history of Ficus. Consistent with previous studies, our biogeographic analysis indicated that the ancestor of Ficus was present in Gondwana. However, a relaxed clock analysis relying on uncorrelated rates in BEAST suggested that the Neotropical section Pharmacosycea split‐off in South America 86.67 Mya, and that other Ficus lineage ancestors originated in India. Most of the basal lineages appeared to have diverged following KT extinction, then rapidly diversified after India collided with continental Asia. The Afrotropical species most likely evolved initially in the Indian subcontinent then dispersed to Africa, either in the late Cretaceous of Madagascar or even later, following the Eocene collision of India with Asia. The Neotropical section Americana, either island‐hopped to South America or took a northern route to the Americas through Europe prior to the terminal Eocene global cooling event. Ficus may have arrived in eastern Malesia following the collision of India with Asia, then widely dispersed thereafter. Given the wide ranges in our date estimates, several other scenarios are possible. However, contrary to earlier reports, our analyses suggest that vicariance played a relatively minor role compared with ecological opportunity and dispersal in the diversification of genus Ficus.
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影响因子：
1.9
作者：
M. Murray
通讯作者：
M. Murray
影响因子：
5.8
作者：
Posada, D;Crandall, KA
通讯作者：
Crandall, KA
影响因子：
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作者：
A. Strand;J. Leebens-Mack;B. Milligan
通讯作者：
A. Strand;J. Leebens-Mack;B. Milligan
影响因子：
6.3
作者：
M. Jamin;M. Lautenbacher
通讯作者：
M. Jamin;M. Lautenbacher
影响因子：
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作者：
E. Corner
通讯作者：
E. Corner