Inferences of biogeographical histories within subfamily Hyacinthoideae using S-DIVA and Bayesian binary MCMC analysis implemented in RASP (Reconstruct Ancestral State in Phylogenies)
Inferences of biogeographical histories within subfamily Hyacinthoideae using S-DIVA and Bayesian binary MCMC analysis implemented in RASP (Reconstruct Ancestral State in Phylogenies)
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DOI：
10.1093/aob/mcr274
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发表时间：
2012-01-01
期刊：
影响因子：
4.2
通讯作者：
Wetschnig, Wolfgang
中科院分区：
文献类型：
--
作者：
Ali, Syed Shujait;Yu, Yan;Wetschnig, Wolfgang
背景和目标 Hyacinthoideae 亚科（Hyacinthaceae）包含 400 多个物种。成员分布在撒哈拉以南非洲、马达加斯加、印度、东亚、地中海地区和欧亚大陆。与许多其他植物谱系一样，风信子科也表现出不连续的分布模式。本研究的目的是基于系统发育分析重建风信子亚科的生物地理历史，寻找风信子亚科可能的祖先范围，并确定造成当前分离分布模式的因素。方法基于trnL-F区域的序列，应用简约法和贝叶斯方法获得系统发育树。通过应用 RASP（重建系统发育中的祖先状态）中实施的统计分散-方差分析 (S-DIVA) 和贝叶斯二元 MCMC (BBM) 分析来获得生物地理推论。关键结果 S-DIVA 和 BBM 分析表明风信子科分支似乎起源于撒哈拉以南非洲。分散和替代在创建离散分布模式中发挥了至关重要的作用。结果还表明，Hyacinthoideae 亚科的成员很早就扩散到地中海地区，因此向北的扩散路线（从撒哈拉以南非洲到地中海）似乎是合理的。结论 生物地理学分析表明，Hyacinthoideae 亚科起源于撒哈拉以南非洲。 S-DIVA 表明早期向地中海地区的扩散事件，随后发生了替代事件，从而产生了风信子族和马索尼亚族部落。相比之下，BBM 分析倾向于扩散到地中海地区、东亚和欧洲。生物地理学分析表明，撒哈拉以南非洲和地中海地区作为风信子亚科的多样化和辐射中心发挥着重要作用。在这种双峰分布模式中，撒哈拉以南非洲是多样性的主要中心，地中海地区是多样性的次要中心。撒哈拉以南非洲是马达加斯加、地中海地区和印度的辐射源区。辐射从地中海地区向东亚、欧洲、西亚和印度发生。
Background and Aims Subfamily Hyacinthoideae (Hyacinthaceae) comprises more than 400 species. Members are distributed in sub-Saharan Africa, Madagascar, India, eastern Asia, the Mediterranean region and Eurasia. Hyacinthoideae, like many other plant lineages, show disjunct distribution patterns. The aim of this study was to reconstruct the biogeographical history of Hyacinthoideae based on phylogenetic analyses, to find the possible ancestral range of Hyacinthoideae and to identify factors responsible for the current disjunct distribution pattern.Methods Parsimony and Bayesian approaches were applied to obtain phylogenetic trees, based on sequences of the trnL-F region. Biogeographical inferences were obtained by applying statistical dispersal-vicariance analysis (S-DIVA) and Bayesian binary MCMC (BBM) analysis implemented in RASP (Reconstruct Ancestral State in Phylogenies).Key Results S-DIVA and BBM analyses suggest that the Hyacinthoideae clade seem to have originated in sub-Saharan Africa. Dispersal and vicariance played vital roles in creating the disjunct distribution pattern. Results also suggest an early dispersal to the Mediterranean region, and thus the northward route (from sub-Saharan Africa to Mediterranean) of dispersal is plausible for members of subfamily Hyacinthoideae.Conclusions Biogeographical analyses reveal that subfamily Hyacinthoideae has originated in sub-Saharan Africa. S-DIVA indicates an early dispersal event to the Mediterranean region followed by a vicariance event, which resulted in Hyacintheae and Massonieae tribes. By contrast, BBM analysis favours dispersal to the Mediterranean region, eastern Asia and Europe. Biogeographical analysis suggests that sub-Saharan Africa and the Mediterranean region have played vital roles as centres of diversification and radiation within subfamily Hyacinthoideae. In this bimodal distribution pattern, sub-Saharan Africa is the primary centre of diversity and the Mediterranean region is the secondary centre of diversity. Sub-Saharan Africa was the source area for radiation toward Madagascar, the Mediterranean region and India. Radiations occurred from the Mediterranean region to eastern Asia, Europe, western Asia and India.