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Identification of Post-translational Modifications of Plant Protein Complexes
Published on: February 22, 2014
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Regulation of plant NLRs by post-translational modifications
Chenchen Zhong1, Xinchen Wang1, Yi Li1
1State Key Laboratory of Plant Environmental Resilience, College of Biological Sciences, China Agricultural University, Beijing 100193, China.
Trends in Biochemical Sciences
|November 25, 2025
Summary
Resistosomes reveal how plants fight disease. Post-translational modifications (PTMs) like phosphorylation and ubiquitination finely tune plant immune receptors (NLRs) for better crop defense.
Area of Science:
- Plant biology
- Molecular immunology
- Structural biology
Background:
- Plant immunity relies on nucleotide-binding leucine-rich repeat receptors (NLRs) to detect pathogens.
- Resistosomes are key protein complexes mediating NLR-triggered defense responses.
- Understanding NLR regulation is crucial for enhancing crop disease resistance.
Purpose of the Study:
- To elucidate the structural and mechanistic basis of NLR-mediated plant immunity.
- To highlight the role of post-translational modifications (PTMs) in regulating NLR function.
- To explore the potential for engineering NLRs for improved crop disease resistance.
Main Methods:
- Structural biology techniques to visualize resistosome complexes.
- Biochemical assays to study NLR conformational dynamics and stability.
- Analysis of various post-translational modifications (PTMs) affecting NLRs.
Main Results:
- Resistosomes provide a structural framework for NLR-mediated plant defense.
- PTMs, including phosphorylation, ubiquitination, lipidation, acetylation, and SUMOylation, are critical regulators of NLR activity.
- Kinases and E3 ubiquitin ligases modulate NLRs' conformation, stability, and signaling.
Conclusions:
- Spatiotemporal regulation of NLRs via PTMs is essential for balancing plant growth and defense.
- Insights into NLR regulation can guide strategies for engineering enhanced crop immunity.
- The study advances our understanding of molecular mechanisms underlying plant disease resistance.
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