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Related Experiment Videos

Systemic immunity.

Murray Grant1, Chris Lamb

  • 1Imperial College of Science, Technology and Medicine, Exhibition Road, London SW7 2AZ, UK.

Current Opinion in Plant Biology
|June 7, 2006
PubMed
Summary
This summary is machine-generated.

Systemic acquired resistance (SAR) involves NON-EXPRESSOR OF PATHOGENESIS-RELATED1 (NPR1) and requires nucleocytoplasmic transport. Emerging evidence points to lipid-based signals and autophagy in plant immunity.

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Area of Science:

  • Plant pathology
  • Molecular biology
  • Immunology

Background:

  • Systemic acquired resistance (SAR) confers broad-spectrum, long-lasting immunity in plants against diverse pathogens.
  • NON-EXPRESSOR OF PATHOGENESIS-RELATED1 (NPR1) is a key positive regulator of SAR, with its activity modulated by cellular redox state.
  • Recent studies emphasize the importance of nucleocytoplasmic transport and protein secretion in establishing robust systemic immunity.

Purpose of the Study:

  • To elucidate the mechanisms underlying the establishment of effective systemic immunity in plants.
  • To identify the mobile signals and their perception mechanisms in distal tissues during SAR.
  • To understand the role of autophagy in regulating systemic immunity.

Main Methods:

  • Genetic and genomic approaches were employed to investigate SAR pathways.

Related Experiment Videos

  • Analysis of nucleocytoplasmic communication and protein secretion was conducted.
  • Investigation into lipid-derived signals, lipid-binding chaperones, and autophagy's role in SAR.

    • Main Results:

    • Emerging evidence suggests lipid-derived signals, potentially jasmonate-based, are involved in SAR signal translocation.
    • Lipid-binding chaperones appear to facilitate the movement of these signals.
    • Autophagy has been shown to intercept and inactivate a systemic cell death signal, adding complexity to immunity signaling.

    Conclusions:

    • Effective SAR relies on intricate nucleocytoplasmic communication and protein secretion pathways.
    • Lipid-based mobile signals and associated chaperones are likely crucial for SAR signal transduction.
    • Autophagy plays a regulatory role in plant immunity by managing cell death signals, contributing to the complexity of SAR signal decoding.