文献类型：期刊文献

英文题名：Phylogenomic analyses re-evaluate the backbone of Corylus and unravel extensive signals of reticulate evolution

作者：Yang, Zhen[1] Liang, Lisong[1] Xiang, Weibo[2,3] Wu, Qiong[1] Wang, Lujun[4] Ma, Qinghua[1]

第一作者：杨振

通信作者：Ma, QH[1]

机构：[1]Chinese Acad Forestry, Res Inst Forestry, Key Lab Tree Breeding & Cultivat, Natl Forestry & Grassland Adm, Beijing 100091, Peoples R China;[2]China Three Gorges Corp, Natl Engn Res Ctr Ecoenvironm Protect Yangtze Rive, Beijing 100083, Peoples R China;[3]China Three Gorges Corp, Rare Plants Res Inst Yangtze River, Yichang 443133, Peoples R China;[4]Anhui Acad Forestry, Res Inst Econ Forest Cultivat & Proc, Hefei 230031, Peoples R China

年份：2025

卷号：204

外文期刊名：MOLECULAR PHYLOGENETICS AND EVOLUTION

收录：;Scopus(收录号：2-s2.0-85216088910);WOS:【SCI-EXPANDED(收录号:WOS:001410655700001)】；

基金：This study was financially supported by the Fundamental Research Funds of CAF (Grant No. CAFYBB2023MB003) and the National Natural Science Foundation of China (Grant No. 32471886) . The authors sincerely thank Dr. Zhaoshan Wang of the Chinese Academy of Forestry, China for providing computational resources for the data analyses.

语种：英文

外文关键词：Corylus; Phylogenomics; Phylogenetic incongruence; Hybridization/introgression; Incomplete lineage sorting; Reticulate evolution

摘要：Phylogenomic analyses have shown that reticulate evolution greatly affects the accuracy of phylogenetic inferences, and thus may challenge the authority of bifurcating phylogenetic trees. In this study, we re-evaluated the phylogenetic backbone of the genus Corylus based on complete taxon sampling and genomic data. We assembled 581 single-copy nuclear genes and whole plastomes from 64 genome resequencing datasets to elucidate the reticulate relationships within Corylus. Nuclear coalescent and concatenation phylogenies revealed identical and fully supported backbone, clarifying the sisterhood between sect. Acanthochlamys and sect. Siphonochlamys as well as the phylogenetic position of C. fargesii and C. wangii, which have yet been addressed in previous phylogenetic studies. However, the monophyly of C. jacquemontii and C. kwechowensis and the distinction between C. ferox and C. ferox var. thibetica were not supported. Gene trees-species tree conflicts and cytonuclear discordance were identified, with multiple evidences supporting that hybridization/introgression, coupled with incomplete lineage sorting, have led to substantial phylogenetic incongruence in Corylus. Moreover, typical geographical clustering rather than strict monophyletic pattern in plastome phylogeny implies chloroplast capture within Corylus and offers evidence of cytoplasmic introgression. Overall, this study provides a robust phylogenomic backbone for Corylus and unravels that reticulate evolution can greatly shape taxonomic revision.