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Priming for enhanced defense.

Uwe Conrath1, Gerold J M Beckers, Caspar J G Langenbach

  • 1Department of Plant Physiology, RWTH Aachen University, Aachen 52056, Germany; email: uwe.conrath@bio3.rwth-aachen.de , beckers@bio3.rwth-aachen.de , langenbach@bio3.rwth-aachen.de , m.jaskiewicz@bio1.rwth-aachen.de.

Annual Review of Phytopathology
|June 14, 2015
PubMed
Summary
This summary is machine-generated.

Plants can enter a primed defense state, responding faster and stronger to stress. This review explores the molecular mechanisms, activators like azelaic acid, and agricultural potential of plant defense priming.

Keywords:
epigenetic memoryprimed immunitysignal transductionsustainable agriculturesystemic immunity

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Area of Science:

  • Plant Biology
  • Molecular Biology
  • Biochemistry

Background:

  • Plants activate enhanced defense responses when recognizing threats like pathogens or stress.
  • Chemicals can also induce this defense priming state, improving plant immunity and stress tolerance.

Purpose of the Study:

  • To review recent advances in understanding the molecular mechanisms of plant defense priming.
  • To highlight key molecular players and activators involved in this process.

Main Methods:

  • Review of recent scientific literature on plant defense priming.
  • Analysis of molecular mechanisms including receptor levels, enzyme activity, and chromatin modifications.

Main Results:

  • Defense priming involves elevated pattern-recognition receptors, dormant signaling enzymes, and HsfB1 activity.
  • Alterations in chromatin state and identification of aspartyl-tRNA synthetase as a receptor for beta-aminobutyric acid are key findings.
  • Azelaic and pipecolic acids are identified as important priming activators, with evidence of priming inheritance.

Conclusions:

  • Defense priming is a crucial plant defense strategy with diverse molecular underpinnings.
  • Understanding these mechanisms, including novel activators and inheritance patterns, offers significant potential for agricultural applications.