Arizona State University, PO Box 875502, Tempe, AZ, 85287, USA.
Texas Tech University, Box 43131, Lubbock, TX, 79409, USA.
BMC Ecol Evol. 2023 Nov 17;23(1):66. doi: 10.1186/s12862-023-02151-9.
The evening primrose family (Onagraceae) includes 664 species (803 taxa) with a center of diversity in the Americas, especially western North America. Ongoing research in Onagraceae includes exploring striking variation in floral morphology, scent composition, and breeding system, as well as the role of these traits in driving diversity among plants and their interacting pollinators and herbivores. However, these efforts are limited by the lack of a comprehensive, well-resolved phylogeny. Previous phylogenetic studies based on a few loci strongly support the monophyly of the family and the sister relationship of the two largest tribes but fail to resolve several key relationships.
We used a target enrichment approach to reconstruct the phylogeny of Onagraceae using 303 highly conserved, low-copy nuclear loci. We present a phylogeny for Onagraceae with 169 individuals representing 152 taxa sampled across the family, including extensive sampling within the largest tribe, Onagreae. Deep splits within the family are strongly supported, whereas relationships among closely related genera and species are characterized by extensive conflict among individual gene trees.
This phylogenetic resource will augment current research projects focused throughout the family in genomics, ecology, coevolutionary dynamics, biogeography, and the evolution of characters driving diversification in the family.
月见草科（Onagraceae）包括 664 种（803 个分类单元），其多样性中心位于美洲，尤其是北美西部。月见草科的研究工作包括探索花形态、气味成分和繁殖系统的显著变化，以及这些特征在驱动植物及其相互作用的传粉者和食草动物多样性方面的作用。然而，这些努力受到缺乏全面、分辨率高的系统发育关系的限制。先前基于少数几个基因座的系统发育研究强烈支持该科的单系性和两个最大的族之间的姐妹关系，但未能解决几个关键关系。
我们使用靶向富集方法，利用 303 个高度保守、低拷贝的核基因座重建了月见草科的系统发育。我们提出了一个月见草科的系统发育，其中包括代表该科 152 个分类单元的 169 个个体，包括在最大的族 Onagreae 中进行了广泛的采样。科内的深部分支得到了强烈支持，而亲缘关系密切的属和种之间的关系则以各基因树之间广泛的冲突为特征。
该系统发育资源将增强目前在整个科范围内进行的基因组学、生态学、协同进化动态、生物地理学和驱动家族多样化的特征进化等方面的研究项目。
