Identification of Finely Mapped Quantitative Trait Locus and Candidate Gene Mining for the Three-Seeded Pod Trait in Soybean
文献类型： 外文期刊
作者： Li, Candong 1 ; Jiang, Hongwei 4 ; Li, Yingying 5 ; Liu, Chunyan 3 ; Qi, Zhaoming 3 ; Wu, Xiaoxia 3 ; Zhang, Zhanguo 3 ; Hu, Zhenbang 3 ; Zhu, Rongsheng 3 ; Guo, Tai 1 ; Wang, Zhixin 1 ; Zheng, Wei 1 ; Zhang, Zhenyu 1 ; Zhao, Haihong 1 ; Wang, Nannan 1 ; Shan, Dapeng 3 ; Xin, Dawei 3 ; Luan, Feishi 2 ; Chen, Qingshan 3 ;
作者机构： 1.Heilongjiang Acad Agr Sci, Jiamusi Branch Inst, Jiamusi, Peoples R China
2.Northeast Agr Univ, Coll Life Sci, Harbin, Peoples R China
3.Northeast Agr Univ, Country Coll Agr, Harbin, Peoples R China
4.Jilin Acad Agr Sci, Soybean Res Inst, Changchun, Peoples R China
5.Northeast Normal Univ, Inst Cytol & Genet, Key Lab Mol Epigenet MOE, Changchun, Peoples R China
关键词： soybean; three seeded pods; QTL fine mapping; candidate genes analysis; gene function identification
期刊名称：FRONTIERS IN PLANT SCIENCE （ 影响因子：6.627； 五年影响因子：7.255 ）
ISSN： 1664-462X
年卷期： 2021 年 12 卷
页码：
收录情况： SCI
摘要： The three-seeded pod number is an important trait that positively influences soybean yield. Soybean variety with increased three-seeded pod number contributes to the seed number/plant and higher yield. The candidate genes of the three-seeded pod may be the key for improving soybean yield. In this study, identification and validation of candidate genes for three-seeded pod has been carried out. First, a total of 36 quantitative trait locus (QTL) were detected from the investigation of recombinant inbred lines including 147 individuals derived from a cross between Charleston and Dongning 594 cultivars. Five consensus QTLs were integrated. Second, an introgressed line CSSL-182 carrying the target segment for the trait from the donor parent was selected to verify the consensus QTL based on its phenotype. Third, a secondary group was constructed by backcrossing with CSSL-182, and two QTLs were confirmed. There were a total of 162 genes in the two QTLs. The mining of candidate genes resulted in the annotation of eight genes with functions related to pod and seed sets. Finally, haplotype analysis and quantitative reverse transcriptase real-time PCR were carried to verify the candidate genes. Four of these genes had different haplotypes in the resource group, and the differences in the phenotype were highly significant. Moreover, the differences in the expression of the four genes during pod and seed development were also significant. These four genes were probably related to the development process underlying the three-seeded pod in soybean. Herein, we discuss the past and present studies related to the three-seeded pod trait in soybean.
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