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Journal article
Telomere-to-telomere genome assemblies and population resequencing of diploid and allotetraploid peanut varieties
Nature genetics
2026
PMID: 42032297
Abstract
Peanut (Arachis hypogaea L.) is a globally significant leguminous oil crop. Here we present telomere-to-telomere genome assemblies for two diploid and four tetraploid peanut varieties, resulting in high-quality reference genomes, showing that the complex activities of transposable elements, chromosomal rearrangements and centromere expansions within subgenomes collectively contribute to the asymmetrical evolution of the tetraploid genome, and unique structural variants in the four tetraploid peanut varieties provide clear evidence of domestication. Population analyses of 521 peanut accessions revealed asymmetric selection events between subgenomes during breeding, and genome-wide association studies identified candidate genes linked to oil content, seed size and weight, kernel dehydration rate, and arachidic acid content. In addition, transcriptomic and metabolomic analyses revealed enhanced activity in lipidomic and anthocyanin biosynthetic pathways during seed development. These comprehensive findings provide insights into genome organization, evolutionary dynamics and phenotypic differentiation across peanut varieties that could inform future peanut breeding and improvement strategies.
Details
- Title
- Telomere-to-telomere genome assemblies and population resequencing of diploid and allotetraploid peanut varieties
- Authors/Creators
- Jianxin Bian - Peking UniversityYilin Zhang - Center for Life SciencesShuai Ding - Peking UniversityHaosong Guo - Murdoch UniversityKui Li - Peking UniversityYu Guan - Peking UniversityGuoliang Zhou - Peking UniversityJihua Li - Peking UniversityVanika Garg - Murdoch University, Centre for Crop and Food InnovationYuanyuan Cui - Peking UniversityYuan Lv - Peking UniversityAnnapurna Chitikineni - Murdoch UniversityQingjing Meng - Peking UniversityTianyu Li - Peking UniversityLiangqiong He - Guangxi Academy of Agricultural ScienceChuanzhi Zhao - Shandong Academy of Agricultural SciencesXingjun Wang - Shandong Academy of Agricultural SciencesRonghua Tang - Guangxi Academy of Agricultural ScienceLiangsheng Zhang - Yangtze River Delta Physics Research Center (China)Rajeev K Varshney - Murdoch University, Food Futures InstituteXing Wang Deng - Center for Life SciencesHang He - Center for Life SciencesXiaoqin Liu - Weifang University
- Publication Details
- Nature genetics
- Publisher
- Springer Nature
- Number of pages
- 21
- Identifiers
- 991005879653607891
- Murdoch Affiliation
- Centre for Crop and Food Innovation; State Agricultural Biotechnology Centre; Food Futures Institute
- Language
- English
- Resource Type
- Journal article
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