文献类型： 外文期刊

作者： Liu, Yiyang ¹ ; Shao, Libin ² ; Zhou, Jing ² ; Li, Rongchong ¹ ; Pandey, Manish K. ³ ; Han, Yan ⁴ ; Cui, Feng ¹ ; Zhang, Jialei ¹ ; Guo, Feng ¹ ; Chen, Jing ¹ ; Shan, Shihua ⁵ ; Fan, Guangyi ² ; Zhang, He ⁶ ; Seim, Inge ⁷ ; Liu, Xin ¹ ; Li, Xinguo ¹ ; Varshney, Rajeev K. ³ ; Li, Guowei ¹ ; Wan, Shubo ¹ ;

作者机构： 1.Shandong Acad Agr Sci, Inst Crop Germplasm Resources, Prov Key Lab Crop Genet Improvement Ecol & Physiol, Jinan 250100, Shandong, Peoples R China

2.BGI Shenzhen, BGI Qingdao, Qingdao, Shandong, Peoples R China

3.Int Crops Res Inst Semi Arid Trop, Ctr Excellence Genom & Syst Biol, Hyderabad 502324, India

4.Shandong Normal Univ, Coll Life Sci, Jinan 250014, Shandong, Peoples R China

5.Shandong Peanut Res Inst, Qingdao 266000, Peoples R China

6.BGI Shenzhen, State Key Lab Agr Genom, Shenzhen 518083, Peoples R China

7.Nanjing Normal Univ, Coll Life Sci, Integrat Biol Lab, Wenyuan Rd, Nanjing 210023, Peoples R China

8.Queensland Univ Technol, Sch Biol & Environm Sci, Brisbane 4000, Australia

9.Univ Western Australia, UWA Inst Agr, Perth, WA 6001, Australia

10.Murdoch Univ, State Agr Biotechnol Ctr, Ctr Crop & Food Innovat, Murdoch, WA, Australia

关键词： Peanut; Genomic diversity; Evolution; GWAS; Seed traits

期刊名称：JOURNAL OF ADVANCED RESEARCH （ 影响因子：10.7； 五年影响因子：11.4 ）

ISSN： 2090-1232

年卷期： 2022 年 42 卷

页码：

收录情况： SCI

摘要： Introduction: Cultivated peanut (Arachis hypogaea L.) is an important oil crop for human nutrition and is cultivated in >100 countries. However, the present knowledge of its genomic diversity, evolution, and loci related to the seed traits is limited. Objectives: Our study intended to (1) uncover the population structure and the demographic history of peanuts, (2) identify signatures of selection that occurred during peanut improvement breeding, and (3) detect and verify the functions of candidate genes associated with seed traits. Methods: We explored the population relationship and the evolution of peanuts using a largescale single nucleotide polymorphism dataset generated from the genome-wide resequencing of 203 cultivated peanuts. Genetic diversity and genomic scan analyses were applied to identify selective loci for genomicselection breeding. Genome-wide association studies, transgenic experiments, and RNA-seq were employed to identify the candidate genes associated with seed traits. Results: Our study revealed that the 203 resequenced accessions were divided into four genetic groups, consistent with their botanical classification. Moreover, the var. peruviana and var. fastigiata subpopulations have diverged to a greater extent than the others, and var. peruviana may be the earliest variant in the evolution from tetraploid ancestors. A recent dramatic expansion in the effective population size of the cultivated peanuts ca. 300-500 years ago was also noted. Selective sweeps underlying quantitative trait loci and genes of seed size, plant architecture, and disease resistance coincide with the major goals of improved peanut breeding compared with the landrace and cultivar populations. Genome-wide association testing with functional analysis led to the identification of two genes involved in seed weight and seed length regulation. Conclusion: Our study provides valuable information for understanding the genomic diversity and the evolution of peanuts and serves as a genomic basis for improving peanut cultivars. (c) 2022 The Authors. Published by Elsevier B.V. on behalf of Cairo University. This is an open access article