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

文献类型： 外文期刊

第一作者： Xiang, Kun-Li

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

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关键词： conservation genomics; eudicots; evolutionary rates; niche conservatism; phylogenomics

期刊名称：SCIENCE CHINA-LIFE SCIENCES （ 影响因子：9.1； 五年影响因子：7.1 ）

ISSN： 1674-7305

年卷期： 2023 年

页码：

收录情况： SCI

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.

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