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Updated: Aug 6, 2026
09:41
Translating Ribosome Affinity Purification (TRAP) to Investigate Arabidopsis thaliana Root Development at a Cell Type-Specific Scale
Published on: May 14, 2020
Longitudinal zone- and cell type-specific pattern-triggered immune responses in Arabidopsis roots
Lahong Xu1, Fausto Andres Ortiz-Morea2, Sung-Il Kim3
1Department of Biochemistry & Biophysics, Texas A&M University, College Station, TX 77843, USA.
Developmental Cell
|July 24, 2026
Summary
Plant-derived phytocytokines trigger stronger root immune responses than microbial patterns. These responses vary by root cell type and zone, influencing growth and defense strategies against pathogens.
Area of Science:
- Plant immunity
- Root biology
- Molecular plant-pathogen interactions
Background:
- Plant roots are crucial for survival against microbial pathogens.
- Root immune responses involve diverse cell types and developmental zones.
- Understanding cell-type specific responses is key to plant defense.
Purpose of the Study:
- To compare the potency of plant-derived phytocytokines versus microbe-derived patterns in eliciting root immune responses.
- To investigate how receptor expression and signaling modules influence differential responses across root cell types and zones.
- To elucidate the role of phytocytokines in mediating growth-defense trade-offs and identifying key transcriptional regulators.
Main Methods:
- Single-cell transcriptomics of Arabidopsis roots
- Live-cell imaging
- Motif-informed network inference
Main Results:
- Phytocytokines elicit more potent immune responses than microbe-derived patterns across all root cell types and zones.
- Differential receptor and signaling module expression dictates response intensity to specific elicitors.
- Phytocytokines suppress receptor-like kinase genes, balancing growth and defense, with responses correlating to pathogen invasion sites.
Conclusions:
- Phytocytokines are potent inducers of plant root immunity.
- Root immune responses are highly orchestrated, varying by cell type, developmental zone, and elicitor.
- This study provides a detailed map of transcriptional reprogramming in plant roots during immune responses.
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