Genomic data and ecological niche modeling reveal an unusually slow rate of molecular evolution in the Cretaceous Eupteleaceae

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外文摘要：Living fossils are evidence of long-term sustained ecological success.However,whether living fossils have little molecular changes remains poorly known,particularly in plants.Here,we have introduced a novel method that integrates phylogenomic,comparative genomic,and ecological niche modeling analyses to investigate the rate of molecular evolution of Eupteleaceae,a Cretaceous relict angiosperm family endemic to East Asia.We assembled a high-quality chromosome-level nuclear genome,and the chloroplast and mitochondrial genomes of a member of Eupteleaceae(Euptelea pleiosperma).Our results show that Eupteleaceae is most basal in Ranunculales,the earliest-diverging order in eudicots,and shares an ancient whole-genome duplication event with the other Ranunculales.We document that Eupteleaceae has the slowest rate of molecular changes in the observed angiosperms.The unusually low rate of molecular evolution of Eupteleaceae across all three independent inherited genomes and genes within each of the three genomes is in association with its conserved genome architecture,ancestral woody habit,and conserved niche requirements.Our findings reveal the evolution and adaptation of living fossil plants through large-scale environmental change and also provide new insights into early eudicot diversification.

外文关键词：

conservation genomicseudicotsevolutionary ratesniche conservatismphylogenomics

作者：

Kun-Li Xiang、Sheng-Dan Wu、Lian Lian、Wen-Chuang He、Dan Peng、Huan-Wen Peng、Xiao-Ni Zhang、Hong-Lei Li、Jia-Yu Xue、Hong-Yan Shan、Gui-Xia Xu、Yang Liu、Zhi-Qiang Wu、Wei Wang

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作者单位：

State Key Laboratory of Plant Diversity and Specialty Crops,Institute of Botany,Chinese Academy of Sciences,Beijing 100093,China

Shenzhen Branch,Guangdong Laboratory of Lingnan Modem Agriculture,Key Laboratory of Synthetic Biology,Laboratory of the Ministry of Agriculture and Rural Affairs,Agricultural Genomics Institute at Shenzhen,Chinese Academy of Agricultural Sciences,Shenzhen 518120,China

China National Botanical Garden,Beijing 100093,China

State Key Laboratory of Grassland Agro-Ecosystems and College of Ecology,Lanzhou University,Lanzhou 730000,China

University of Chinese Academy of Sciences,Beijing 100049,China

College of Landscape Architecture and Life Science/Institute of Special Plants,Chongqing University of Arts and Sciences,Chongqing 402160,China

College of Horticulture,Academy for Advanced Interdisciplinary Studies,Nanjing Agricultural University,Nanjing 210095,China

Fairylake Botanical Garden,Shenzhen & Chinese Academy of Sciences,Shenzhen 518004,China

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基金：

中国科学院战略规划重点项目国家自然科学基金国家自然科学基金国家自然科学基金国家自然科学基金Science,Technology,and Innovation Commission of Shenzhen Municipality of China王宽诚教育基金Innovation Program of Chinese Academy of Agricultural Sciences

项目编号：

XDB3103000032170210321702383177023131770233RCYX20200714114538196GJTD-2020-05

出版年：

2024

DOI：

10.1007/s11427-023-2448-x

中国科学:生命科学(英文版)

中国科学院

中国科学:生命科学(英文版)

CSTPCD

影响因子：0.806

ISSN：1674-7305

年,卷(期)：2024.67(4)

参考文献量82