Plant Immunity in High Resolution: Advances in Single-Cell and Spatial Transcriptomics in Plant-Pathogen Interactions
Chia-Yun Lee1, Suchismita Ghosh1, Kevin L Cox1,2,3
1Department of Biology, Washington University in Saint Louis, St. Louis, MO 63130, USA.
Journal of Experimental Botany
|July 27, 2026
Summary
New single-cell and spatial transcriptomics reveal plant immune responses vary by cell type and location. These advanced methods improve understanding of plant defense strategies against pathogens.
Area of Science:
- Plant Biology
- Molecular Biology
- Immunology
Background:
- Plant immune responses are complex and vary significantly between different cell types and tissue contexts.
- Traditional whole-tissue analyses mask the cellular and spatial heterogeneity of plant defense mechanisms.
- Understanding cell-type-specific responses is crucial for deciphering plant-pathogen interactions.
Purpose of the Study:
- To review recent advances in single-cell and spatial transcriptomics for studying plant immunity.
- To highlight how these technologies reveal cellular heterogeneity in plant defense responses.
- To discuss the implications for understanding plant-pathogen interactions and future research directions.
Main Methods:
- Single-cell RNA sequencing (scRNA-seq) to analyze gene expression at the individual cell level.
- Spatial transcriptomics to map gene expression patterns within the spatial context of plant tissues.
- Integration of these methods across diverse plant-pathogen systems.
Main Results:
- scRNA-seq and spatial transcriptomics enable high-resolution analysis of plant immune responses.
- These approaches reveal heterogeneous and coordinated transcriptional activities across different cell types and tissue regions during pathogen attack.
- Demonstrated cell-type-specific defense programs and intercellular communication networks.
Conclusions:
- Single-cell and spatial transcriptomics provide unprecedented insights into the spatial and cellular dynamics of plant immunity.
- These methods are essential for a refined understanding of plant-pathogen interactions and defense orchestration.
- Future applications of spatially resolved transcriptomics hold significant promise for advancing plant defense research.
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