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Inferring the biogeography of the Colchicaceae, the non-Neotropical sister clade to the mainly Neotropical Alstroemeriaceae

推断秋水仙科（主要是新热带六出花科的非新热带姐妹分支）的生物地理学

基本信息

批准号：
175646617
负责人：
Professorin Dr. Susanne Sabine Renner
金额：
--
依托单位：
Department of Biology
依托单位国家：
德国
项目类别：
Research Grants
财政年份：
2010
资助国家：
德国
起止时间：
2009-12-31 至 2017-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/175646617?language=en
关键词：
Inferring biogeography Colchicaceae non Neotropical

项目摘要

The Austral floristic realm comprises 16 families (and c. 60 genera) that are restricted to South America and Australasia. An important member of this realm is the Alstroemeriaceae, with 200 species in four genera, Alstroemeria and Bomarea in South America, and Drymaphila and Luzuriaga in Australia, Tasmania, New Zealand as well as South America, since Luzuriaga also has species in South America. Evolutionary studies on the Alstroemeriaceae have included few species and have suffered from a lack of phylogenetic resolution due to limited signal in the DNA regions sequenced so far. This proposal is seeking support for a phylogeny of the family that will sample c. 100 species for several nuclear and chloroplast DNA regions. We will test the hypothesis that the oldest divergence(s) in Alstroemeriaceae date(s) back to the break-up of East Gondwana and will answer two questions: (i) What is the evolutionary relationship between Alstroemeria and Bomarea, and how was their divergence affected by the uplift phases of the Andes? And (ii) What is the history of the Alstroemeria subclades that appear to be restricted to the ancient Brazilian shield region and the relatively young Chilean and Peruvian/Ecuadorian chains of the Andes? The project is part of a metaanalysis of the Austral floristic realm, and in a future follow-up project the phylogeny will also be used to study the evolution of pollination modes in Alstroemerieae.

南方植物区系包括16个科（和C。60属），仅限于南美洲和澳大拉西亚。这一领域的一个重要成员是Alstroemeriaceae，有四个属200种，Alstroemeria和Bomarea在南美洲，Drymaphila和Luzuriaga在澳大利亚，塔斯马尼亚，新西兰以及南美洲，因为Luzuriaga在南美洲也有物种。Alstroemeriaceae的进化研究包括几个物种，并遭受了缺乏系统发育分辨率，由于有限的信号在DNA区域测序到目前为止。这项提案正在寻求支持的家庭，将样本c。100个物种的几个核和叶绿体DNA区域。我们将检验这一假设，即Alstroemeriaceae最古老的分歧（S）日期（S）回东冈瓦纳大陆的解体，并将回答两个问题：（i）什么是Alstroemeria和Bomarea之间的进化关系，以及他们的分歧是如何受到安第斯山脉的隆升阶段？和（ii）Alstroemeria亚分支的历史是什么，似乎是局限于古代巴西盾地区和相对年轻的智利和秘鲁/厄瓜多尔链的安第斯山脉？该项目是南方植物区系荟萃分析的一部分，在未来的后续项目中，植物发生学也将用于研究Alstroemerieae授粉模式的演变。