Identification of a Major QTL for Seed Protein Content in Cultivated Peanut (Arachis hypogaea L.) Using QTL-Seq
文献类型： 外文期刊
作者： Chen, Hao 1 ; Liu, Nian 2 ; Huang, Li 2 ; Huai, Dongxin 2 ; Xu, Rirong 1 ; Chen, Xiangyu 1 ; Guo, Shengyao 3 ; Chen, Jianhong 3 ; Jiang, Huifang 2 ;
作者机构： 1.Fujian Acad Agr Sci, Minist Agr & Rural Affairs Peoples Republ China, Fujian Engn Res Ctr Characterist Upland Crops Bree, Inst Crop Sci,Fujian Engn Lab Crop Mol Breeding,Fu, Fuzhou 350013, Peoples R China
2.Chinese Acad Agr Sci, Oil Crops Res Inst, Minist Agr & Rural Affairs Peoples Republ China, Key Lab Biol & Genet Improvement Oil Crops, Wuhan 430062, Peoples R China
3.Quanzhou Inst Agr Sci, Jinjiang 362212, Peoples R China
关键词： QTL-seq; BSA mapping; seed protein content; peanut
期刊名称：PLANTS-BASEL （ 影响因子：4.1； 五年影响因子：4.5 ）
ISSN： 2223-7747
年卷期： 2024 年 13 卷 17 期
页码：
收录情况： SCI
摘要： Peanut (Arachis hypogaea L.) is a great plant protein source for human diet since it has high protein content in the kernel. Therefore, seed protein content (SPC) is considered a major agronomic and quality trait in peanut breeding. However, few genetic loci underlying SPC have been identified in peanuts, and the underlying regulatory mechanisms remain unknown, limiting the effectiveness of breeding for high-SPC peanut varieties. In this study, a major QTL (qSPCB10.1) controlling peanut SPC was identified within a 2.3 Mb interval in chromosome B10 by QTL-seq using a recombinant inbred line population derived from parental lines with high and low SPCs, respectively. Sequence comparison, transcriptomic analysis, and annotation analysis of the qSPCB10.1 locus were performed. Six differentially expressed genes with sequence variations between two parents were identified as candidate genes underlying qSPCB10.1. Further locus interaction analysis revealed that qSPCB10.1 could not affect the seed oil accumulation unless qOCA08.1XH13 was present, a high seed oil content (SOC) allele for a major QTL underlying SOC. In summary, our study provides a basis for future investigation of the genetic basis of seed protein accumulation and facilitates marker-assisted selection for developing high-SPC peanut genotypes.
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