Identification of loci and candidate genes related to nodulation in soybean

文献类型： 外文期刊

第一作者： Fan, Renzhong

作者： Fan, Renzhong;Wang, Jiao;Yu, Deyue;Cheng, Hao;Chao, Shengqian

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关键词： Soybean; Root nodule; Genome-wide association studies; PCA; Transcriptome analysis

期刊名称：EUPHYTICA （ 影响因子：1.7； 五年影响因子：1.8 ）

ISSN： 0014-2336

年卷期： 2025 年 221 卷 1 期

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收录情况： SCI

摘要： Root nodules provide nitrogen-based nutrition for soybean. A better understanding of the genetic architecture and molecular mechanisms of nodulation is important for soybean breeding. In this study, principal component analysis (PCA) was performed for root nodule-related traits, and the PC scores of each material were calculated. Nodulation ability was evaluated on the basis of principal component scores. A genome-wide association study (GWAS) was performed to identify single nucleotide polymorphisms (SNPs) associated with root nodule-related traits and PC scores across four environments. Five SNPs were repeatedly identified in the two environments. The supernodulation material NJAU_C156 and the difficult-nodulation material NJAU_C130 were used for transcriptomic analysis. There were 224 common differentially expressed genes (DEGs) for the root system and 167 common DEGs for the root nodules. Enrichment analysis revealed that these DEGs were enriched mainly in oxidoreductase activity, glutathione peroxidase activity, arachidonic acid metabolism, and isoflavone metabolism etc. These genes play important role in the formation and development of root nodules and nitrogen fixation processes. By combining the DEGs obtained from the transcriptomic analysis with the GWAS results, fifteen candidate genes were identified, which were annotated mainly as serine-rich protein-related genes, UDP-glucosyl transferase genes, and genes encoding WRKY family transcription factors. Overall, the loci and candidate genes identified in this study will be helpful to further understand symbiotic nodulation.

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