Biogeographic history of Pterocarya(Juglandaceae)inferred from phylogenomic and fossil data  

作　　者：Hua Yan Peng Zhou Wei Wang Jian-Fei Ye Shao-Lin Tan Chun-Ce Guo Wen-Gen Zhang Zi-Wei Zhu Yi-Zhen Liu Xiao-Guo Xiang 

机构地区：[1]Key Laboratory of Poyang Lake Environment and Resource Utilization Ministry of Education,School of Life Sciences,Nanchang University,Nanchang 330031,China [2]Forestry College,Jiangxi Agricultural University,Nanchang 330045,China [3]State Key Laboratory of Systematic and Evolutionary Botany,Chinese Academy of Sciences,Beijing 100093,China [4]School of Ecology,Sun Yat-Sen University,Guangzhou 510275,China [5]Jiangxi Academy of Forest,Nanchang 330013,China

出　　处：《Journal of Systematics and Evolution》2024年第6期1165-1176,共12页植物分类学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(31670212,32060056,and 31300181);the Thousand Talents Program of Jiangxi Province(jxsq2018106032);Jiangxi Provincial Natural Science Foundation,China(ZBG20230418029 and 20232ACB205010).

摘　　要：Pterocarya (Juglandaceae) is disjunctly distributed in East Asia and the Caucasus region today, but its fossils are widely distributed in the Northern Hemisphere. We first inferred phylogeny with time estimation of Pterocarya under node-dating (ND) based on plastomes of all eight extant species and tip-dating (TD) based on plastomes and 69 morphological characters of 19 extant and extinct species, respectively. We compared the biogeographical reconstructions on the timetrees from ND and TD, respectively, and then compiled 83 fossil records and 599 current occurrences for predicting the potential distributions for the past and the future. The most recent comment ancestor of Pterocarya is inferred in East Asia at 40.46 Ma (95% highest posterior density [HPD]: 28.04-54.86) under TD and 26.81 Ma (95% HPD: 23.03-33.12) under ND. The current distribution was attributed to one dispersal and one vicariant event without fossils, but as many as six dispersal, six vicariant, and 11 local extinction events when considering fossils. Pterocarya migrated between East Asia and North America via the Bering Land Bridge during the early Oligocene and the early Miocene periods. With the closure of Turgai Strait, Pterocarya dispersed between East Asia and Europe through the Miocene. The potential distribution analyses indicated that Pterocarya preferred warm temperate regions across the Northern Hemisphere since the Oligocene, but the drastic temperature decline caused its extinction in high latitudes. Except for Pterocarya fraxinifolia and Pterocarya stenoptera, suitable habitats for this genus are predicted to contract by 2070 due to climate change.

关 键 词：BIOGEOGRAPHY East Asian-Europe disjunction FOSSIL molecular clock PHYLOGENOMICS species distribution modeling 

分 类 号：Q94[生物学—植物学]