Apoplastic Proteomics in Plant-Pathogen Interactions

Summary

The apoplast, encompassing the cell-wall matrix and extracellular space, serves as the primary arena for plant–pathogen interactions. Apoplastic proteomics employs mass spectrometry and advanced protein-separation methodologies to characterise the repertoire of extracellular proteins deployed during infection. Quantitative profiling of enzyme classes such as hydrolases, protease inhibitors, oxidoreductases and signalling peptides has elucidated mechanisms of pathogen perception, reactive oxygen species modulation and cell-wall reinforcement. Integration of proteomic data with functional annotation and pathway analysis has revealed networks of differentially accumulated proteins that underpin basal immunity and specific resistance phenotypes. These insights inform the breeding of disease-resistant cultivars and the design of sustainable disease-management strategies, emphasising the global significance of mapping the apoplastic proteome under biotic stress.

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Apoplastic Proteomics in Plant-Pathogen Interactions publication trend

The graph below shows the total number of articles in apoplastic proteomics in plant-pathogen interactions across all publications each year (not limited to Nature Index journals).

Technical terms

Apoplast: The extracellular compartment comprising the cell-wall matrix and intercellular spaces where initial plant–pathogen interactions occur.

Proteomics: The large-scale study of the identity, abundance and function of proteins within a biological sample.

Secretome: The subset of proteins secreted by cells into the extracellular space, including the apoplast.

Differentially accumulated proteins: Proteins whose abundance significantly increases or decreases in response to pathogen infection.

References

  1. Proteomic analysis of pathogen-responsive proteins from maize stem apoplast triggered by Fusarium verticillioides. Journal of Integrative Agriculture (2022).
  2. Uncovering plant-pathogen crosstalk through apoplastic proteomic studies. Frontiers in Plant Science (2014).
  3. Uncovering the mechanisms underlying pear leaf apoplast protein-mediated resistance against Colletotrichum fructicola through transcriptome and proteome profiling. Phytopathology Research (2024).

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