Single-Cell Omics in Legumes: Research Trends and Applications

Area of Science:

• Plant Biology
• Genomics
• Sustainable Agriculture

Background:

• Legumes are vital food crops and crucial for sustainable agriculture due to nitrogen-fixing symbiosis with rhizobia.
• Advances in single-cell transcriptomics and epigenomics offer high-resolution insights into gene expression and regulatory networks.

Purpose of the Study:

• To review recent progress in applying single-cell omics to legumes.
• To highlight the role of cell-type-specific gene functions in plant development, stress responses, and symbiosis establishment.
• To illustrate the transition from bulk to single-cell multi-omics using legume case studies.

Main Methods:

• Review of recent literature on single-cell omics in legumes.
• Analysis of gene expression and regulatory networks at the single-cell level.
• Case studies in *Medicago truncatula*, *Lotus japonicus*, *Glycine max*, and *Arachis hypogaea*.

Main Results:

• Single-cell omics enable detailed analysis of gene function in distinct legume cell types.
• These methods illuminate contributions to plant development, pathogen response, stress plasticity, and root nodule symbiosis.
• The shift to single-cell multi-omics provides a more nuanced understanding compared to bulk analyses.

Conclusions:

• Single-cell omics are transforming legume research, offering unprecedented resolution.
• Integrated legume cell atlases are essential for future translational research and crop improvement.
• Further development is needed to overcome current limitations and fully realize the potential of these technologies.