Genomic insights into ecological adaptation of oaks revealed byphylogenomic analysis of multiple species  

作　　者：Tian-Rui Wang Xin Ning Si-Si Zheng Yu Li Zi-Jia Lu Hong-Hu Meng Bin-Jie Ge Gregor Kozlowski Meng-Xiao Yan Yi-Gang Song 

机构地区：[1]Eastern China Conservation Centre for Wild Endangered Plant Resources,Shanghai Chenshan Botanical Garden,Shanghai 201602,China [2]College of Forestry and Biotechnology,Zhejiang A&F University,Hangzhou 311300,China [3]College of Life Sciences,Shanghai Normal University,Shanghai 200234,China [4]Plant Phylogenetics and Conservation Group,Centre for Integrative Conservation,Xishuangbanna Tropical Botanical Garden,Chinese Academy of Sciences,Kunming 650223,China [5]Department of Biology and Botanic Garden,University of Fribourg,Fribourg,Switzerland [6]Natural History Museum Fribourg,Fribourg,Switzerland

出　　处：《Plant Diversity》2025年第1期53-67,共15页植物多样性(英文版)

基　　金：supported by the National Natural Science Foundation of China(No.31901217);the Special Fund for Scientific Research of Shanghai Landscaping and City Appearance Administrative Bureau(grant numbers G192422,G242414,and G242416).

摘　　要：Understanding the ecological adaptation of tree species can not only reveal the evolutionary potential but also benefit biodiversity conservation under global climate change.Quercus is a keystone genus in Northern Hemisphere forests,and its wide distribution in diverse ecosystems and long evolutionary history make it an ideal model for studying the genomic basis of ecological adaptations.Here we used a newly sequenced genome of Quercus gilva,an evergreen oak species from East Asia,with 18 published Fagales genomes to determine how Fagaceae genomes have evolved,identify genomic footprints of ecological adaptability in oaks in general,as well as between evergreen and deciduous oaks.We found that oak species exhibited a higher degree of genomic conservation and stability,as indicated by the absence of large-scale chromosomal structural variations or additional whole-genome duplication events.In addition,we identified expansion and tandem repetitions within gene families that contribute to plant physical and chemical defense(e.g.,cuticle biosynthesis and oxidosqualene cyclase genes),which may represent the foundation for the ecological adaptation of oak species.Circadian rhythm and hormone-related genes may regulate the habits of evergreen and deciduous oaks.This study provides a comprehensive perspective on the ecological adaptations of tree species based on phylogenetic,genome evolutionary,and functional genomic analyses.

关 键 词：QUERCUS Ecological adaptation PHYLOGENOMICS TRANSCRIPTOMES FAGACEAE 

分 类 号：Q943[生物学—植物学]