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Identification of Gene-Allele System Conferring Alkali-Tolerance at Seedling Stage in Northeast China Soybean Germplasm

文献类型： 外文期刊

作者： Zong, Chunmei 1 ; Zhao, Jinming 1 ; Wang, Yanping 6 ; Wang, Lei 1 ; Chen, Zaoye 1 ; Qi, Yuxin 6 ; Bai, Yanfeng 6 ; Li, Wen 6 ; Wang, Wubin 1 ; Ren, Haixiang 6 ; Du, Weiguang 6 ; Gai, Junyi 1 ;

作者机构： 1.Nanjing Agr Univ, Soybean Res Inst, Nanjing 210095, Peoples R China

2.Nanjing Agr Univ, MARA Natl Ctr Soybean Improvement, Nanjing 210095, Peoples R China

3.Nanjing Agr Univ, State Key Lab Crop Genet & Germplasm Enhancement, Nanjing 210095, Peoples R China

4.Nanjing Agr Univ, State Innovat Platform Integrated Prod & Educ Soyb, Nanjing 210095, Peoples R China

5.Nanjing Agr Univ, Jiangsu Collaborat Innovat Ctr Modern Crop Prod, Nanjing 210095, Peoples R China

6.Heilongjiang Acad Agr Sci, Mudanjiang Expt Stn, Mudanjiang Res & Dev Ctr Soybean, Natl Ctr Soybean Improvement,Mudanjiang Branch, Mudanjiang 157041, Heilongjiang, Peoples R China

关键词： alkali tolerance; gene-allele matrix; gene-allele sequence marker (GASM); gene function; Northeast China soybean germplasm population (NECSGP); optimal cross design; restricted two-stage multilocus genome-wide association study (RTM-GWAS); soybean (Glycine max (L.) Merr.)

期刊名称：INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES （ 影响因子：5.6； 五年影响因子：6.2 ）

ISSN： 1661-6596

年卷期： 2024 年 25 卷 5 期

页码：

收录情况： SCI

摘要： Salinization of cultivated soils may result in either high salt levels or alkaline conditions, both of which stress crops and reduce performance. We sampled genotypes included in the Northeast China soybean germplasm population (NECSGP) to identify possible genes that affect tolerance to alkaline soil conditions. In this study, 361 soybean accessions collected in Northeast China were tested under 220 mM NaHCO3:Na2CO3 = 9:1 (pH = 9.8) to evaluate the alkali-tolerance (ATI) at the seedling stage in Mudanjiang, Heilongjiang, China. The restricted two-stage multi-locus model genome-wide association study (RTM-GWAS) with gene-allele sequences as markers (6503 GASMs) based on simplified genome resequencing (RAD-sequencing) was accomplished. From this analysis, 132 main effect candidate genes with 359 alleles and 35 Gene x Environment genes with 103 alleles were identified, explaining 90.93% and 2.80% of the seedling alkali-tolerance phenotypic variation, respectively. Genetic variability of ATI in NECSGP was observed primarily within subpopulations, especially in ecoregion B, from which 80% of ATI-tolerant accessions were screened out. The biological functions of 132 candidate genes were classified into eight functional categories (defense response, substance transport, regulation, metabolism-related, substance synthesis, biological process, plant development, and unknown function). From the ATI gene-allele system, six key genes-alleles were identified as starting points for further study on understanding the ATI gene network.

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