文献类型：期刊文献

英文题名：Species divergence and environmental adaptation of Picea asperata complex at the whole genome level

作者：Liu, Yifu[1,2] Xiao, Wenfa[1] Wang, Fude[3] Wang, Ya[4] Dong, Yao[1] Nie, Wen[1] Tan, Cancan[1] An, Sanping[5] Chang, Ermei[4] Jiang, Zeping[1] Wang, Junhui[2,4] Jia, Zirui[2,4]

第一作者：Liu, Yifu

通信作者：Wang, JH[1];Jia, ZR[1]

机构：[1]Chinese Acad Forestry, Ecol & Nat Conservat Inst, Key Lab Forest Ecol & Environm, Natl Forestry & Grassland Adm, Beijing, Peoples R China;[2]Chinese Acad Forestry, State Key Lab Tree Genet & Breeding, Beijing, Peoples R China;[3]Heilongjiang Forestry Res Inst, Harbin, Peoples R China;[4]Chinese Acad Forestry, Res Inst Forestry, Key Lab Tree Breeding & Cultivat, Natl Forestry & Grassland Adm, Beijing, Peoples R China;[5]Res Inst Forestry Xiaolong Mt, Gansu Prov Key Lab Secondary Forest Cultivat, Tianshui, Peoples R China

年份：2024

卷号：14

期号：8

外文期刊名：ECOLOGY AND EVOLUTION

收录：;Scopus(收录号：2-s2.0-85200742748);WOS:【SCI-EXPANDED(收录号:WOS:001285119900001)】；

基金：National Key Research and Development Program of China, Grant/Award Number: 2023YFD2200605-02; National Natural Science Foundation of China, Grant/Award Number: 31500540The work was financially supported by the National Key Research and Development Program of China (2023YFD2200605-02) and the National Natural Science Foundation of China (31500540)

语种：英文

外文关键词：adaptive evolution; gene flow; genetic divergence; Picea; selective sweep

摘要：To study the interspecific differentiation characteristics of species originating from recent radiation, the genotyping-by-sequencing (GBS) technique was used to explore the kinship, population structure, gene flow, genetic variability, genotype-environment association and selective sweeps of Picea asperata complex with similar phenotypes from a genome-wide perspective. The following results were obtained: 14 populations of P. asperata complex could be divided into 5 clades; P. wilsonii and P. neoveitchii diverged earlier and were more distantly related to the remaining 6 spruce species. Various geological events have promoted the species differentiation of P. asperata complex. There were four instances of gene flow among P. koraiensis, P. meyeri, P. asperata, P. crassifolia and P. mongolica. The population of P. mongolica had the highest level of nucleotide diversity, and P. neoveitchii may have experienced a bottleneck recently. Genotype-environment association found that a total of 20,808 genes were related to the environmental variables, which enhanced the adaptability of spruce in different environments. Genes that were selectively swept in the P. asperata complex were primarily associated with plant stress resistance. Among them were some genes involved in plant growth and development, heat stress, circadian rhythms and flowering. In addition to the commonly selected genes, different spruce species also displayed unique genes subjected to selective sweeps that improved their adaptability to different habitats. Understanding the interspecific gene flow and adaptive evolution of Picea species is beneficial to further understanding the species relationships of spruce and can provide a basis for studying spruce introgression and functional genomics.