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Releasing hidden MAMPs from precursor proteins in plants
Changlong Chen1, Renier A L van der Hoorn2, Pierre Buscaill2
1Institute of Biotechnology, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China; The Plant Chemetics Laboratory, Department of Biology, University of Oxford, Oxford, UK.
Trends in Plant Science
|November 9, 2023
Summary
Plant immunity relies on detecting pathogen patterns. This study investigates how peptide microbe-associated molecular patterns (MAMPs) are released from precursor proteins, revealing crucial but unknown extracellular processing steps for pathogen recognition.
Area of Science:
- Plant pathology
- Molecular biology
- Immunology
Background:
- Plant immunity is activated by cell surface recognition of pathogens.
- Pattern recognition receptors (PRRs) detect microbe-associated molecular patterns (MAMPs) on pathogens.
- The processing and release of peptide MAMPs from precursor proteins are poorly understood.
Purpose of the Study:
- To investigate the processing of seven known peptide MAMP precursors.
- To assess the necessity of processing for MAMP recognition.
- To identify potential extracellular events involved in MAMP release.
Main Methods:
- Analysis of seven known peptide MAMP precursors.
- Utilizing structural modeling.
- Reviewing existing public knowledge.
Main Results:
- Structural models and public data suggest processing is likely required for MAMP recognition.
- Multiple extracellular events are implicated in MAMP release.
- Significant gaps exist in our understanding of MAMP precursor processing.
Conclusions:
- Extracellular processing of MAMP precursors is likely essential for plant immune responses.
- Further research is needed to uncover the specific mechanisms and enzymes involved in these processing events.
- Understanding MAMP release is critical for deciphering plant-pathogen interactions.
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