Phylogenomics of Brosimum (Moraceae) and allied genera, including a revised subgeneric system
Phylogenomics of Brosimum (Moraceae) and allied genera, including a revised subgeneric system
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Brosimum（桑科）和相关属的系统发育学，包括修订的亚属系统
DOI：
10.1002/tax.12503
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发表时间：
2021
期刊：
影响因子：
3.4
通讯作者：
Zerega, Nyree J.C.
中科院分区：
文献类型：
--
作者：
Gardner, Elliot M.;Audi, Lauren;Zhang, Qian;Sauquet, Hervé;Monro, Alexandre K.;Zerega, Nyree J.C.
本文报道了雀麦属(桑科)及其近缘属毛雀麦属和向日葵属的系统基因组学研究，并提供了近完整的分类单元样本。该分支分布于墨西哥和大安的列斯群岛至亚马逊地区，包含未得到充分利用的作物Ramón(面包坚果)(Brosimum Alicastum)以及其他有价值的木材或药用物种。333个基因的靶浓缩产生了一个清晰的系统发育树，表明毛球菌属和向日葵花柱属嵌套在雀麦属中。本文对雀麦属(Brosimum)(19 spp.)基于系统发育和形态方面的考虑，包括毛球菌属和向日葵花柱亚属的减少。单系亚属可根据托叶、退化雌蕊和子叶的同源构型进行诊断。分歧年代估计表明，Brosimum起源于中新世，祖先区重建表明，所有四个亚属都起源于亚马逊地区，最初是多样化的，然后扩散到南美洲和中美洲的其他地区。
We present a phylogenomic study ofBrosimum(Moraceae) and the allied generaTrymatococcusandHelianthostylis, with near‐complete taxon sampling. Distributed from Mexico and the Greater Antilles to the Amazon, this clade contains the underutilized crop ramón (bread nut) (Brosimum alicastrum) as well as other species valued for timber or medicinal uses. Target enrichment for 333 genes produced a well‐resolved phylogenetic tree and showed thatTrymatococcusandHelianthostylisare nested withinBrosimum. We present a revised subgeneric classification ofBrosimum(19 spp.) based on phylogenetic and morphological considerations, including the reduction ofTrymatococcusandHelianthostylisto subgenera. The monophyletic subgenera can be diagnosed based on stipule, pistillode, and cotyledon synapomorphies. Divergence date estimates suggest a Miocene origin forBrosimum, and ancestral area reconstruction indicated that all four subgenera originated and initially diversified in Amazonia before dispersing into other parts of South and Central America.