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
Recent advances in single-cell and spatial transcriptomics reveal diverse plant immune responses at cellular resolution. These methods enhance understanding of cell-type-specific defenses and spatial organization during pathogen attacks.
Area of Science:
- Plant pathology
- Molecular biology
- Genomics
Background:
- Plant immune responses vary significantly across different cell types and tissue contexts.
- Traditional bulk transcriptomic analyses fail to capture the spatial and cellular heterogeneity of these responses.
- Understanding cellular heterogeneity is crucial for deciphering plant defense mechanisms against pathogens.
Purpose of the Study:
- To review recent advancements in single-cell and spatial transcriptomics for analyzing plant immune responses.
- To highlight how these technologies reveal cell-type-specific defense mechanisms and intercellular communication.
- To discuss the spatial organization of plant defense responses during pathogen interactions.
Main Methods:
- Single-cell RNA sequencing (scRNA-seq) for high-resolution transcriptional profiling.
- Spatial transcriptomics to preserve tissue context and spatial information.
- Integration of these methods across diverse plant-pathogen systems.
Main Results:
- Heterogeneous and coordinated transcriptional immune responses identified across different plant cell types and tissue regions.
- Detailed insights into cell-type-specific defense activation and signaling pathways.
- Revealed the spatial dynamics and organization of plant defense strategies.
Conclusions:
- Single-cell and spatial transcriptomics offer unprecedented resolution for studying plant immunity.
- These approaches are vital for understanding complex plant-pathogen interactions and cellular heterogeneity.
- Future research directions include refining technical applications for deeper insights into plant defense.
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