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Multi-Stage Transcriptome Analysis Identifies Key Molecular Pathways for Soybean Under Phosphorus-Limited Conditions.
Xiulin Liu1, Sobhi F Lamlom1,2, Xueyang Wang1
1Soybean Research Institute of Heilongjiang Academy of Agriculture Sciences, Harbin 150086, China.
International Journal of Molecular Sciences
|September 13, 2025
Summary
Soybean
Area of Science:
- Plant Molecular Biology
- Agricultural Science
- Genomics
Background:
- Phosphorus deficiency hinders soybean yields on 74% of China's farmland.
- Understanding soybean's molecular strategies for acquiring insoluble phosphorus is crucial.
Purpose of the Study:
- To investigate the molecular mechanisms of phosphorus acquisition in soybean.
- To identify key genes and pathways involved in soybean's response to phosphorus deficiency.
Main Methods:
- Transcriptome sequencing (RNA-Seq) was performed on the Heinong 48 soybean variety.
- Analysis covered four developmental stages: Trefoil, Flower, Podding, and Post-podding.
- Differential gene expression, functional enrichment (GO), and pathway analysis (KEGG) were conducted.
Main Results:
- 2755 differentially expressed genes (DEGs) were identified, with most occurring in early developmental stages.
- Key pathways like isoflavonoid biosynthesis and photosynthesis were significantly enriched.
- Transcription factor families including bHLH, bZIP, and WRKY were prominent among DEGs.
Conclusions:
- Early developmental stages exhibit significant transcriptional changes in response to phosphorus deficiency.
- Identified genes and pathways offer targets for breeding soybeans with enhanced phosphorus uptake.
- Findings support sustainable agriculture by potentially reducing fertilizer needs.
