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Updated: Jul 11, 2026

High-resolution Spatiotemporal Analysis of Receptor Dynamics by Single-molecule Fluorescence Microscopy
Published on: July 25, 2014
Pattern recognition receptors: from the cell surface to intracellular dynamics
Denise Altenbach1, Silke Robatzek
1Max-Planck-Institut für Züchtungsforschung, Köln, Germany.
Abstract:
Detection of potentially infectious microorganisms is essential for plant immunity. Microbial communities growing on plant surfaces are constantly monitored according to their conserved microbe-associated molecular patterns (MAMPs). In recent years, several pattern-recognition receptors, including receptor-like kinases and receptor-like proteins, and their contribution to disease resistance have been described. MAMP signaling must be carefully controlled and seems to involve receptor endocytosis. As a further surveillance layer, plants are able to specifically recognize microbial effector molecules via nucleotide-binding site leucine-rich repeat receptors (NB-LRR). A number of recent studies show that NB-LRR translocate to the nucleus in order to exert their activity. In this review, current knowledge regarding the recognition of MAMPs by surface receptors, receptor activation, signaling, and subcellular redistribution are discussed.
Insights
Plants detect microbes using surface receptors that recognize microbe-associated molecular patterns (MAMPs) and internal surveillance via nucleotide-binding site leucine-rich repeat receptors (NB-LRR). This review covers MAMP recognition, signaling, and receptor movement.
Area of Science:
- Plant immunity and molecular mechanisms of microbial detection.
Background:
- Plant immune systems monitor microbial communities via conserved microbe-associated molecular patterns (MAMPs).
- Pattern-recognition receptors, including receptor-like kinases and receptor-like proteins, are crucial for disease resistance.
- Nucleotide-binding site leucine-rich repeat receptors (NB-LRR) provide an additional surveillance layer by recognizing microbial effectors.
Purpose of the Study:
- To review current knowledge on plant immune responses to microbial detection.
- To discuss the roles of surface receptors and NB-LRRs in plant immunity.
- To explore signaling pathways, receptor activation, and subcellular localization.
Main Methods:
- Literature review of recent studies on plant-microbe interactions and immune signaling.
- Analysis of molecular mechanisms involving pattern-recognition receptors and NB-LRRs.
- Discussion of receptor endocytosis and nuclear translocation.
Main Results:
- MAMP recognition by surface receptors initiates plant defense signaling.
- Receptor activation involves signaling cascades and potentially receptor endocytosis.
- NB-LRR receptors translocate to the nucleus to mediate specific immune responses.
Conclusions:
- Plant immunity relies on a multi-layered surveillance system involving surface and intracellular receptors.
- Understanding receptor dynamics, including signaling and subcellular redistribution, is key to plant disease resistance.
- Further research into these mechanisms can inform strategies for enhancing crop immunity.
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