Comparative analysis of rainforest-savanna biome shifts and spatio-temporal diversification patterns in Old- and New World savanna lineages in Ochnaceae (Malpighiales)

赭蕨科（Malpighiales）是全球热带雨林和稀树草原的重要组成部分，根据最近的研究，它有资格作为一个优秀的模型组，以（1）调查稀树草原谱系的演变，相关的驱动因素和多样化的时空模式，（2）研究雨林和稀树草原之间的生物群落变化，（3）在一个单系群内比较分析了新热带和古热带稀树草原谱系的多样性动态;深裂软木树皮）的进化和辐射稀树草原血统。使用一种新的基因组方法（靶向序列捕获），仍然存在的弱点，在系统发育重建将得到解决，以及在家庭解决开放的系统问题。由此获得的基于聚结的同源性重建是上述更广泛兴趣的比较分析的基础。广泛的前期工作、方法学方面的专业知识、完善的相关赭藓科研究人员全球网络、手头的良好采样以及成功应用的方法，以确保从植物标本馆收集的大量采样，是确保项目可行性的重要先决条件。

Ochnaceae s.l. (Malpighiales) are an important element of tropical rain forests and savannas worldwide and, based on recent studies, qualify as an excellent model group to (1) investigate the evolution of savanna lineages, the relevant drivers and the spatio-temporal patterns of diversification, (2) study biome shifts between rain forest and savanna, (3) comparatively analyse the diversification dynamics of savanna lineages in the Neotropics and Paleotropics within a monophyletic group, and (4) analyse the role of fire-adaptations (e.g. geoxyly; deeply fissured, corky bark) for the evolution and radiation of savanna lineages. Using a phylogenomic approach (targeted sequence capture), still existing weaknesses in the phylogenetic reconstruction will be solved as well as open systematic questions in the family settled. The thus obtained coalescence-based reconstructions of phylogeny are the basis for the above mentioned comparative analysis of broader interest. Extensive preliminary work, methodological expertise, a well established worldwide network of relevant Ochnaceae researchers, good sampling at hand and methods successfully applied to guarantee extensive sampling from herbarium collections are important prerequisites to ensure the feasibility of the project.