文献类型：期刊文献

英文题名：Genomic analyses reveal natural selection on reproduction related genes between two closely related Populus (Salicaceae) species

作者：Tian, Yang[1,2] Liu, Shu-Yu[1] Ingvarsson, Par K.[3] Zhao, Dan-Dan[1] Wang, Li[1] Abuduhamiti, Baoerjiang[4] Cai, Jin-Feng[2] Wu, Zhi-Qiang[5] Zhang, Jian-Guo[1,2] Wang, Zhao-Shan[1,2]

第一作者：Tian, Yang

通信作者：Zhang, JG[1];Wang, ZS[1];Zhang, JG[2];Wang, ZS[2]

机构：[1]Chinese Acad Forestry, State Key Lab Tree Genet & Breeding, Key Lab Silviculture, State Forestry Adm,Res Inst Forestry, Beijing 100091, Peoples R China;[2]Nanjing Forestry Univ, Collaborat Innovat Ctr Sustainable, Forestry Southern China, Nanjing 210037, Peoples R China;[3]Swedish Univ Agr Sci, Linnean Ctr Plant Biol, Dept Plant Biol, S-75007 Uppsala, Sweden;[4]Forestry Res Inst Altay Reg, Altay 836500, Xinjiang, Peoples R China;[5]Chinese Acad Agr Sci, Guangdong Lab Lingnan Modern Agr, Agr Genom Inst Shenzhen, Shenzhen Branch,Genome Anal Lab,Minist Agr, Shenzhen 518120, Peoples R China

年份：0

外文期刊名：JOURNAL OF SYSTEMATICS AND EVOLUTION

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000877924700001)】；

基金：We thank Dong Wang, Aiguo Duan, Wenhao Shao, Sirong Yi, Zhonghui Shi, Bin Zhang for some sample collection. We thank Professor Jing Wang in Sichuan University, Professor Song Ge, Associate Professor Fumin Zhang, Dr. Zhe Cai, and Chunyan Jing in the State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, Beijing, China, for their valuable suggestions on data analysis. This work was supported by China National GeneBank (CNGB). Financial support for this research was provided by the National Natural Science Foundation of China (No. 31770702).

语种：英文

外文关键词：demographic histories; natural selection; P. adenopoda; P. tomentosa; P. alba; whole genome re-sequencing

摘要：Identifying the factors that cause reproductive isolation and their relative importance in species divergence is crucial to our understanding of speciation processes. In most species, natural selection is commonly considered to play a large role in driving speciation. Based on whole genome re-sequencing data from 27 Populus alba and 28 Populus adenopoda individuals, we explored the factors related to reproductive isolation of these two closely related species. The results showed that the two species diverged similar to 5-10 million years ago (Ma), when the Qinghai-Tibet Plateau reached a certain height and the inland climate of the Asian continent became arid. In highly differentiated genomic regions, the relative divergence (F-ST) and absolute divergence (d(xy)) were significantly higher than the genomic background, theta pi and shared polymorphisms decreased whereas fixed differences increased, which indicated that natural selection played a key role in the reproductive isolation of the two species. In addition, we found several genes that were related to reproduction that may be involved in explaining the reproductive isolation. Using phylogenetic trees resolved from haplotype data of Populus tomentosa and P. adenopoda, the maternal origin of P. tomentosa from P. adenopoda was likely to be located in Hubei and Chongqing Provinces.