文献类型：期刊文献

英文题名：A genome variation map provides insights into the genetics of walnut adaptation and agronomic traits

作者：Ji, Feiyang[1] Ma, Qingguo[1] Zhang, Wenting[2] Liu, Jie[2] Feng, Yu[3] Zhao, Peng[4] Song, Xiaobo[1] Chen, Jiaxin[2] Zhang, Junpei[1] Wei, Xin[2] Zhou, Ye[1] Chang, Yingying[5] Zhang, Pu[1] Huang, Xuehui[2] Qiu, Jie[2] Pei, Dong[1]

第一作者：Ji, Feiyang

通信作者：Pei, D[1];Qiu, J[2]

机构：[1]Chinese Acad Forestry, Res Inst Forestry, State Key Lab Tree Genet & Breeding, Key Lab Tree Breeding & Cultivat,State Forestry &, Beijing 100091, Peoples R China;[2]Shanghai Normal Univ, Coll Life Sci, Shanghai Key Lab Plant Mol Sci, Shanghai 200234, Peoples R China;[3]Zhejiang Univ, Coll Life Sci, MOE Lab Biosyst Homeostasis & Protect, Systemat & Evolutionary Bot & Biodivers Grp, Hangzhou 310058, Zhejiang, Peoples R China;[4]Northwest Univ, Coll Life Sci, Key Lab Resource Biol & Biotechnol Western China, Minist Educ, Xian 710069, Shaanxi, Peoples R China;[5]Henan Normal Univ, Engn Technol Res Ctr Nursing & Utilizat Genuine C, Coll Life Sci, Engn Lab Biotechnol Green Med Plant Henan Prov, Xinxiang 453007, Henan, Peoples R China

年份：2021

卷号：22

期号：1

外文期刊名：GENOME BIOLOGY

收录：;Scopus(收录号：2-s2.0-85117905143);WOS:【SCI-EXPANDED(收录号:WOS:000712579400002)】；

基金：This work was funded by the State Key Laboratory of Tree Genetics and Breeding support program (Grant No. CAFYBB2019ZY001), the National Key Research and Development Program of China (Grant No. 2018YFD1000604), the Fundamental Research Funds for the Central Non-profit Research Institution of CAF (Grant No. CAFYBB2017ZA004-2), and the National Innovation Alliance of Walnut Industry (NAWI).

语种：英文

外文关键词：Walnut; Juglans regia; Improvement; Adaptation; GWAS

摘要：Background Common walnut (Juglans regia L.) is one of the top four most consumed nuts in the world due to its health benefits and pleasant taste. Despite its economic importance, the evolutionary history and genetic control of its adaptation and agronomic traits remain largely unexplored. Results We report a comprehensive walnut genomic variation map based on whole-genome resequencing of 815 walnut accessions. Evolutionary analyses suggest that Chinese J. regia diverged from J. sigillata with extensive hybridizations after the split of the two species. In contrast to annual crops, the genetic diversity and heterozygous deleterious mutations of Chinese common walnut trees have continued to increase during the improvement process. Selective sweep analyses identify 902 genes uniquely selected in the improved common walnut compared to its progenitor population. Five major-effect loci are identified to be involved in walnut adaptations to temperature, precipitation, and altitude. Genome-wide association studies reveal 27 genomic loci responsible for 18 important agronomic traits, among which JrFAD2 and JrANR are the potentially major-effect causative genes controlling linoleic acid content and color of the endopleura of the nut, respectively. Conclusions The largest genomic resource for walnuts to date has been generated and explored in this study, unveiling their evolutionary history and cracking the genetic code for agronomic traits and environmental adaptation of this economically crucial crop tree.