文献类型：期刊文献

英文题名：Interspecific Gene Flow and Selective Sweeps in Picea wilsonii, P. neoveitchii and P. likiangensis

作者：Liu, Yifu[1,2] Qin, Aili[1] Wang, Ya[2,3] Nie, Wen[1,2] Tan, Cancan[1,2] An, Sanping[4] Wang, Junhui[2,3] Chang, Ermei[2,3] Jiang, Zeping[1] Jia, Zirui[2,3]

第一作者：Liu, Yifu

通信作者：Jiang, ZP[1];Jia, ZR[2];Jia, ZR[3]

机构：[1]Chinese Acad Forestry, Ecol & Nat Conservat Inst, Key Lab Forest Ecol & Environm, Natl Forestry & Grassland Adm, Beijing 100091, Peoples R China;[2]Chinese Acad Forestry, State Key Lab Tree Genet & Breeding, Beijing 100091, Peoples R China;[3]Chinese Acad Forestry, Res Inst Forestry, Beijing 100091, Peoples R China;[4]Res Inst Forestry Xiaolong Mt, Gansu Prov Key Lab Secondary Forest Cultivat, Tianshui 741002, Peoples R China

年份：2022

卷号：11

期号：21

外文期刊名：PLANTS-BASEL

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000884051600001)】；

基金：This research was funded by "Study of Phylogeography and Quaternary glacial refuge in Picea koraiensis (31500540)" funding by the National Natural Science Foundation of China, and "Research on genetic structure evaluation of germplasm resources and breeding technology in Picea neoveitchii" funding by the Gansu provincial financial innovation project.

语种：英文

外文关键词：gene flow; selective sweeps; Picea wilsonii; Picea neoveitchii; Picea likiangensis

摘要：Genome-wide single nucleotide polymorphism (SNP) markers were obtained by genotyping-by-sequencing (GBS) technology to study the genetic relationships, population structure, gene flow and selective sweeps during species differentiation of Picea wilsonii, P. neoveitchii and P. likiangensis from a genome-wide perspective. We used P. jezoensis and P. pungens as outgroups, and three evolutionary branches were obtained: P. likiangensis was located on one branch, two P. wilsonii populations were grouped onto a second branch, and two P. neoveitchii populations were grouped onto a third branch. The relationship of P. wilsonii with P. likiangensis was closer than that with P. neoveitchii. ABBA-BABA analysis revealed that the gene flow between P. neoveitchii and P. wilsonii was greater than that between P. neoveitchii and P. likiangensis. Compared with the background population of P. neoveitchii, the genes that were selected in the P. wilsonii population were mainly related to plant stress resistance, stomatal regulation, plant morphology and flowering. The genes selected in the P. likiangensis population were mainly related to plant stress resistance, leaf morphology and flowering. Selective sweeps were beneficial for improving the adaptability of spruce species to different habitats as well as to accelerate species differentiation. The frequent gene flow between spruce species makes their evolutionary relationships complicated. Insight into gene flow and selection pressure in spruce species will help us further understand their phylogenetic relationships and provide a scientific basis for their introduction, domestication and genetic improvement.