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Genome-wide association studies for soybean epicotyl length in two environments using 3VmrMLM

文献类型： 外文期刊

作者： Hong, Huilong 1 ; Li, Mei 3 ; Chen, Yijie 4 ; Wang, Haorang 5 ; Wang, Jun 4 ; Guo, Bingfu 6 ; Gao, Huawei 2 ; Ren, Honglei 7 ; Yuan, Ming 8 ; Han, Yingpeng 1 ; Qiu, Lijuan 2 ;

作者机构： 1.Northeast Agr Univ, Key Lab Soybean Biol Chinese Minist Educ, key Lab Soybean Biol & Breeding Genet Chinese Agr, Harbin, Peoples R China

2.Natl Key Facil Crop Gene Resources & Genet Improve, Inst Crop Sci, Beijing, Peoples R China

3.Huazhong Agr Univ, Coll Plant Sci & Technol, Crop Informat Ctr, Wuhan, Peoples R China

4.Yangtze Univ, Coll Agr, Jingzhou, Peoples R China

5.Jiangsu Xuhuai Reg Inst Agr Sci, Xuzhou, Peoples R China

6.Jiangxi Acad Agr Sci, Natl Ctr Oil Crops Improvement, Jiangxi Prov Key Lab Oil Crops Biol, Crops Res Inst,Nanchang Branch, Nanchang, Peoples R China

7.Heilongjiang Acad Agr Sci, Soybean Res Inst, Harbin, Peoples R China

8.Heilongjiang Acad Agr Sci, Qiqihar Branch, Qiqihar, Peoples R China

关键词： genome-wide association analysis; single nucleotide polymorphism; candidate genes; 3VmrMLM; epicotyl length

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： 2022 年 13 卷

页码：

收录情况： SCI

摘要： Germination of soybean seed is the imminent vital process after sowing. The status of plumular axis and radicle determine whether soybean seed can emerge normally. Epicotyl, an organ between cotyledons and first functional leaves, is essential for soybean seed germination, seedling growth and early morphogenesis. Epicotyl length (EL) is a quantitative trait controlled by multiple genes/QTLs. Here, the present study analyzes the phenotypic diversity and genetic basis of EL using 951 soybean improved cultivars and landraces from Asia, America, Europe and Africa. 3VmrMLM was used to analyze the associations between EL in 2016 and 2020 and 1,639,846 SNPs for the identification of QTNs and QTN-by-environment interactions (QEIs)".A total of 180 QTNs and QEIs associated with EL were detected. Among them, 74 QTNs (ELS_Q) and 16 QEIs (ELS_QE) were identified to be associated with ELS (epicotyl length of single plant emergence), and 60 QTNs (ELT_Q) and 30 QEIs (ELT_QE) were identified to be associated with ELT (epicotyl length of three seedlings). Based on transcript abundance analysis, GO (Gene Ontology) enrichment and haplotype analysis, ten candidate genes were predicted within nine genic SNPs located in introns, upstream or downstream, which were supposed to be directly or indirectly involved in the process of seed germination and seedling development., Of 10 candidate genes, two of them (Glyma.04G122400 and Glyma.18G183600) could possibly affect epicotyl length elongation. These results indicate the genetic basis of EL and provides a valuable basis for specific functional studies of epicotyl traits.

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