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Screening Bioactive Nanoparticles in Phagocytic Immune Cells for Inhibitors of Toll-like Receptor Signaling
Published on: July 26, 2017
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Immune signaling: receptor-like proteins make the difference.
Wen R H Huang1, Matthieu H A J Joosten1
1Laboratory of Phytopathology, Wageningen University, Droevendaalsesteeg 1, 6708PB Wageningen, The Netherlands.
Trends in Plant Science
|April 9, 2024
Summary
Plants use receptor-like kinases (RLKs) and receptor-like proteins (RLPs) for immunity. This study highlights key differences in how RLP/SOBIR1 complexes and RLKs signal, particularly in co-receptor recruitment and crosstalk.
Area of Science:
- Plant immunity
- Molecular signaling pathways
- Plant-pathogen interactions
Background:
- Plants possess a receptor-based immune system involving cell-surface receptors like receptor-like kinases (RLKs) and receptor-like proteins (RLPs).
- Leucine-rich repeat (LRR)-containing RLPs associate with the RLK SOBIR1, forming a complex proposed to function similarly to RLKs.
Purpose of the Study:
- To elucidate the distinct molecular mechanisms employed by RLP/SOBIR1 complexes and RLKs in mounting plant immunity.
- To compare how these two receptor types recruit the BAK1 co-receptor.
- To detail the negative crosstalk between RLK and RLP/SOBIR1 signaling networks.
Main Methods:
- Comparative analysis of RLP/SOBIR1 and RLK signaling pathways.
- Investigation of co-receptor (BAK1) recruitment dynamics.
- Examination of inter-network signaling crosstalk.
Main Results:
- Significant differences exist in the molecular mechanisms of immunity triggered by RLP/SOBIR1 complexes versus RLKs.
- Distinct modes of BAK1 co-receptor recruitment are observed between RLPs and RLKs.
- Negative crosstalk between RLK and RLP/SOBIR1 signaling pathways influences plant defense responses.
Conclusions:
- RLP/SOBIR1 complexes and RLKs, while both crucial for plant immunity, operate through divergent signaling pathways.
- Understanding these differences is key to comprehending the full spectrum of plant immune responses.
- Further research into receptor crosstalk can reveal novel strategies for enhancing plant disease resistance.
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