Genetic and epigenetic signatures associated with the rapid radiation of Aquilegia species
Genetic and epigenetic signatures associated with the rapid radiation of Aquilegia species
复制标题
与耧斗菜物种快速辐射相关的遗传和表观遗传特征
DOI：
10.1101/782821
复制
发表时间：
2019
期刊：
影响因子：
--
通讯作者：
Lin Feng Li
中科院分区：
文献类型：
--
作者：
Tianyuan Lu;Ming-Rui Li;Ning Ding;Zhen-Hui Wang;Li-Zhen Lan;Xiang Gao;Lin Feng Li
Elucidating the genetic and epigenetic bases underlying species diversification is crucial to understanding the evolution and persistence of biodiversity. As a well-known horticultural plant grown worldwide, the genus Aquilegia (columbine) is also a model system in adaptive radiation research. In this study, we surveyed the genomes and DNA methylomes of ten representative Aquilegia species from the Asian, European and North American lineages. Our inferences of the phylogenies and population structure revealed clearly high genetic and DNA methylomic divergence across the three lineages. By multi-levelled genome-wide scanning, we identified candidate genes exhibiting lineage-specific genetic or epigenetic variation patterns that are signatures of inter-specific divergence. We demonstrated that these species diversification-associated genetic variations and epigenetic variabilities were partially independent but were both functionally related to various biological processes vital to adaptation, including stress tolerance, cell reproduction and DNA repair. Our study provides an exploratory overview of how the established genetic and epigenetic signatures are associated with the rapid radiation of Aquilegia species.
