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An updated tribal classification of Lamiaceae based on plastome phylogenomics
BMC Biology ( IF 5.4 ) Pub Date : 2021-01-08 , DOI: 10.1186/s12915-020-00931-z
Fei Zhao 1 , Ya-Ping Chen 1 , Yasaman Salmaki 2 , Bryan T Drew 3 , Trevor C Wilson 4 , Anne-Cathrine Scheen 5 , Ferhat Celep 6, 7 , Christian Bräuchler 8 , Mika Bendiksby 9, 10 , Qiang Wang 11 , Dao-Zhang Min 12 , Hua Peng 1 , Richard G Olmstead 13 , Bo Li 12 , Chun-Lei Xiang 1
Affiliation  

A robust molecular phylogeny is fundamental for developing a stable classification and providing a solid framework to understand patterns of diversification, historical biogeography, and character evolution. As the sixth largest angiosperm family, Lamiaceae, or the mint family, consitutes a major source of aromatic oil, wood, ornamentals, and culinary and medicinal herbs, making it an exceptionally important group ecologically, ethnobotanically, and floristically. The lack of a reliable phylogenetic framework for this family has thus far hindered broad-scale biogeographic studies and our comprehension of diversification. Although significant progress has been made towards clarifying Lamiaceae relationships during the past three decades, the resolution of a phylogenetic backbone at the tribal level has remained one of the greatest challenges due to limited availability of genetic data. We performed phylogenetic analyses of Lamiaceae to infer relationships at the tribal level using 79 protein-coding plastid genes from 175 accessions representing 170 taxa, 79 genera, and all 12 subfamilies. Both maximum likelihood and Bayesian analyses yielded a more robust phylogenetic hypothesis relative to previous studies and supported the monophyly of all 12 subfamilies, and a classification for 22 tribes, three of which are newly recognized in this study. As a consequence, we propose an updated phylogenetically informed tribal classification for Lamiaceae that is supplemented with a detailed summary of taxonomic history, generic and species diversity, morphology, synapomorphies, and distribution for each subfamily and tribe. Increased taxon sampling conjoined with phylogenetic analyses based on plastome sequences has provided robust support at both deep and shallow nodes and offers new insights into the phylogenetic relationships among tribes and subfamilies of Lamiaceae. This robust phylogenetic backbone of Lamiaceae will serve as a framework for future studies on mint classification, biogeography, character evolution, and diversification.

中文翻译:

基于塑性体系统基因组学的唇形科更新部落分类

强大的分子系统发育对于开发稳定的分类和提供坚实的框架来理解多样化、历史生物地理学和特征进化的模式至关重要。作为第六大被子植物科,唇形科或薄荷科是芳香油、木材、观赏植物、烹饪和药用草本的主要来源,使其在生态、民族植物学和植物区系方面成为一个极其重要的类群。迄今为止,该家族缺乏可靠的系统发育框架阻碍了大规模的生物地理学研究和我们对多样化的理解。尽管在过去 30 年间在阐明唇形科关系方面取得了重大进展,由于遗传数据的可用性有限,在部落一级解析系统发育骨架仍然是最大的挑战之一。我们使用来自代表 170 个分类群、79 个属和所有 12 个亚科的 175 个种质的 79 个蛋白质编码质体基因对唇形科进行了系统发育分析,以推断部落水平的关系。与以前的研究相比,最大似然分析和贝叶斯分析都产生了更强大的系统发育假设,并支持所有 12 个亚科的单一性,以及 22 个部落的分类,其中三个是本研究中新发现的。因此,我们提出了唇形科更新的系统发育通知部落分类,并补充了分类历史、属名和物种多样性、形态、突触、以及每个亚科和部落的分布。增加的分类单元采样与基于塑性体序列的系统发育分析相结合,为深层和浅层节点提供了强有力的支持,并为唇形科部落和亚科之间的系统发育关系提供了新的见解。这种唇形科强大的系统发育主干将作为未来薄荷分类、生物地理学、性状进化和多样化研究的框架。
更新日期:2021-01-08
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