文献类型：期刊文献

英文题名：Population Structure, Genetic Diversity and Candidate Genes for the Adaptation to Environmental Stress in Picea koraiensis

作者：Wang, Ya[1] Jiang, Zeping[2] Qin, Aili[2] Wang, Fude[3] Chang, Ermei[1] Liu, Yifu[2] Nie, Wen[2] Tan, Cancan[2] Yuan, Yanchao[2] Dong, Yao[2] Huang, Ruizhi[2] Jia, Zirui[1] Wang, Junhui[1]

第一作者：王雁

通信作者：Jia, ZR[1];Wang, JH[1]

机构：[1]Chinese Acad Forestry, State Key Lab Tree Genet & Breeding, Res Inst Forestry, Beijing 100091, Peoples R China;[2]Chinese Acad Forestry, Ecol & Nat Conservat Inst, Key Lab Forest Ecol & Environm Natl Forestry & Gra, Beijing 100091, Peoples R China;[3]Forestry Res Inst Heilongjiang Prov, Harbin 150081, Peoples R China

年份：2023

卷号：12

期号：6

外文期刊名：PLANTS-BASEL

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000959916500001)】；

基金：This study was supported by the "Study of Phylogeography and Quaternary glacial refuge in Picea koraiensis (31500540)" and the "study on Phylogeny and Phylogeography in Keteleeria (32271694)" funding by the National Natural Science Foundation of China.

语种：英文

外文关键词：Picea koraiensis; genetic differentiation; geographic isolation; climatic factors; heavy metal stress; molecular mechanisms

摘要：Picea koraiensis is major silvicultural and timber species in northeast China, and its distribution area is an important transition zone for genus spruce migration. The degree of intraspecific differentiation of P. koraiensis is high, but population structure and differentiation mechanisms are not clear. In this study, 523,761 single nucleotide polymorphisms (SNPs) were identified in 113 individuals from 9 populations of P. koraiensis by genotyping-by-sequencing (GBS). Population genomic analysis showed that P. koraiensis was divided into three geoclimatic regions: Great Khingan Mountains climatic region, Lesser Khingan Mountains climatic region, and Changbai Mountain climatic region. Mengkeshan (MKS) population on the northern edge of the distribution area and Wuyiling (WYL) population located in the mining area are two highly differentiated groups. Selective sweep analysis showed that MKS and WYL populations had 645 and 1126 selected genes, respectively. Genes selected in the MKS population were associated with flowering and photomorphogenesis, cellular response to water deficit, and glycerophospholipid metabolism; genes selected in the WYL population were associated with metal ion transport, biosynthesis of macromolecules, and DNA repair. Climatic factors and heavy metal stress drives divergence in MKS and WYL populations, respectively. Our findings provide insights into adaptive divergence mechanisms in Picea and will contribute to molecular breeding studies.