Resequencing 545 ginkgo genomes across the world reveals the evolutionary history of the living fossil
Resequencing 545 ginkgo genomes across the world reveals the evolutionary history of the living fossil
复制标题
对全球545个银杏基因组进行重新测序揭示了活化石的进化史
DOI：
10.1038/s41467-019-12133-5
复制
发表时间：
2019-09-13
影响因子：
16.6
通讯作者：
Ge, Song
中科院分区：
文献类型：
--
作者：
Zhao, Yun-Peng;Fan, Guangyi;Ge, Song
As Charles Darwin anticipated, living fossils provide excellent opportunities to study evolutionary questions related to extinction, competition, and adaptation. Ginkgo (Ginkgo bilobaL.) is one of the oldest living plants and a fascinating example of how people have saved a species from extinction and assisted its resurgence. By resequencing 545 genomes of ginkgo trees sampled from 51 populations across the world, we identify three refugia in China and detect multiple cycles of population expansion and reduction along with glacial admixture between relict populations in the southwestern and southern refugia. We demonstrate multiple anthropogenic introductions of ginkgo from eastern China into different continents. Further analyses reveal bioclimatic variables that have affected the geographic distribution of ginkgo and the role of natural selection in ginkgo’s adaptation and resilience. These investigations provide insights into the evolutionary history of ginkgo trees and valuable genomic resources for further addressing various questions involving living fossil species.
