Unearthing modes of climatic adaptation in underground storage organs across Liliales

Testing adaptive hypotheses about how continuous traits evolve in association with developmentally-structured discrete traits, while accounting for the confounding influence of other, hidden, evolutionary forces, remains a challenge in evolutionary biology. In one example of this, geophytes are herbaceous plants capable of retreating underground and use underground storage organs (USOs) to survive extended periods of unfavorable conditions. Such plants have evolved multiple times independently across all major vascular plant lineages. Even within closely related lineages, however, geophytes show impressive variation in the morphological modifications and structures (i.e., “types” of USOs) that allow them to survive underground. Despite the developmental and structural complexity of USOs, the prevailing hypothesis is that they represent convergent evolutionary “solutions” to a common ecological problem, though some recent research has drawn this into question. We extend existing phylogen..., , All data files can be opened with an open source text editor such as Sublime Text. For alignment files (.nexus) we recommend an open source alignment viewer such as AliView. CSV files may be opened using the R programming language or visualised using a spreadsheet program such as google sheets.Â

在进化生物学领域，验证关于连续性状如何与发育结构化离散性状协同演化，并同时厘清其他隐性进化力量所带来的混杂影响的适应性假说，仍是一项颇具挑战性的工作。其中一个典型案例便是地下芽植物（geophytes）：这类草本植物能够将植株回缩至地下，并借助地下储存器官（underground storage organs, USOs）度过长期的不利生长环境。此类植物在所有主要维管植物类群中均经历过多次独立起源。即便在亲缘关系较近的类群中，地下芽植物在适应地下生存的形态特化与结构（即地下储存器官的“类型”）上仍展现出显著的多样性。尽管地下储存器官的发育与结构均极为复杂，但主流假说认为它们是针对一类共性生态问题的趋同演化“解决方案”，不过近期的部分研究对此提出了质疑。我们拓展了现有系统发育... 所有数据文件均可通过开源文本编辑器（如Sublime Text）打开。对于序列比对文件（.nexus），我们推荐使用AliView等开源比对查看器。CSV文件可通过R编程语言打开，或借助Google Sheets等电子表格程序进行可视化。