酒瓶兰亚科是APG IV系统中的单子叶分支广义天门冬科的七个亚科之一，有着重要的经济和生态价值。该亚科是最近二十年来才被认可的一个类群，即使在不同版本的APG系统，其分类地位亦处在不断变化之中。酒瓶兰亚科内部的系统发育关系也一直是天门冬目中系统发育研究的难点，已有的该亚科系统学框架的研究主要依据少量基因片段构建，其内部主要分支之间关系不清晰，基部类群尚存争议，系统关系存在诸多疑问。本项目拟开展涵盖酒瓶兰亚科全部28属的叶绿体全基因组研究，以系统发育基因组学手段，对酒瓶兰亚科系统发育关系进行重建，以期澄清该亚科内部的关系，进而探讨系统发育基因组学在该困难类群系统发育重建中的运用。利用本研究和天门冬科其他类群的已测序的叶绿体基因组的特征，解析叶绿体基因组在天门冬科中的结构变异的模式以及其演化路线。研究为进一步探讨酒瓶兰亚科以及整个天门冬科类群的系统演化关系及多样化历史提供重要视角。

Nolinoideae is one of the seven subfamilies within Asparagaceae sensu Angiosperm Phylogeny Group (APG) IV, with considerable economic and ecological significance. This subfamily was newly recognized in recent two decades, and its classification status was constantly changing even in different versions of the APG system. To date, the Nolinoideae phylogeny remains poorly resolved and becomes a particularly recalcitrant area of the Asparagales phylogenetic tree. Despite a few progress based on multilocus, phylogenetic studies of the Nolinoideae, uncertainly remain in resolution/support among major clades and for the basal-most lineage. Here, phylogeny of Nolinoideae will be reconstructed using a complete genus-level sampling of whole plastid genomes to address these uncertainties above. The utility of plastid phylogenomics in resolving phylogenetic reconstruction of this recalcitrant clade will be further tested. Additionally, combining newly sequenced genomes here with previously reported ones, the structural variation and evolutionary pattern of Asparagaceae plastid genomes will be investigated. These results together will offer new and important insights into understanding deep phylogenetic relationship and the diversification history of Nolinoideae as well as the Asparagaceae as a whole.