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Identification of Post-translational Modifications of Plant Protein Complexes
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Innate immune memory in plants.

Eva-Maria Reimer-Michalski1, Uwe Conrath1

  • 1Department of Plant Physiology, RWTH Aachen University, Aachen 52056, Germany.

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|June 7, 2016
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Summary
This summary is machine-generated.

Plants develop systemic immunity and "memory" after infection, priming distant leaves for future defense. This plant immune memory shares similarities with vertebrate innate immune memory, suggesting evolutionary convergence.

Keywords:
Defense primingEpigenetic memoryPlant innate immunitySystemic plant immunity

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Area of Science:

  • Plant biology
  • Immunology
  • Evolutionary biology

Background:

  • The plant innate immune system involves both local and systemic responses.
  • Systemic immunity can be triggered by various stimuli, including pathogen infection and physical injury.
  • Systemic plant immunity primes remote tissues for enhanced defense against subsequent infections.

Purpose of the Study:

  • To investigate the mechanisms underlying systemic plant immunity.
  • To explore the concept of immunological memory in plants.
  • To compare plant innate immune memory with that of jawed vertebrates.

Main Methods:

  • Analysis of molecular and cellular changes in systemic plant immunity.
  • Investigation of pattern-recognition receptors, signaling enzymes, and chromatin modifications.
  • Comparative analysis of immune memory mechanisms in plants and vertebrates.

Main Results:

  • Systemic plant immune responses involve elevated pattern-recognition receptors and dormant signaling enzymes.
  • Alterations in chromatin state contribute to systemic immunity.
  • Systemic responses prime remote leaves, conferring enhanced defense and immunity to reinfection.

Conclusions:

  • The plant innate immune system exhibits immunological memory, similar to trained immunity in vertebrates.
  • Mechanisms for innate immune memory appear conserved or have convergently evolved in plants and vertebrates.
  • This suggests a shared evolutionary trajectory for immune memory across diverse taxa.