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The Hypersensitive Response to Plant Viruses.

Maïlys Piau1, Corinne Schmitt-Keichinger1

  • 1UMR_A1131 Université de Strasbourg-INRAE, 68000 Colmar, France.

Viruses
|October 28, 2023
PubMed
Summary

Leucine-rich proteins are crucial for plant defense against viruses. Recent research highlights their role in detecting viral invaders and initiating immune responses, including the hypersensitive response.

Keywords:
HR and HR-likeLRR proteinsLRR-RLKLRR-RLPNB-LRRR genedefense responseextreme resistanceprogrammed cell deathsystemic necrosisvirus

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Area of Science:

  • Plant immunity
  • Molecular biology
  • Virology

Background:

  • Leucine-rich repeat (LRR) proteins are vital for plant defense against pathogens.
  • These proteins function both at the cell surface (pattern-triggered immunity) and intracellularly (effector-triggered immunity).
  • While intracellular nucleotide-binding, leucine-rich repeat (NB-LRR) proteins are known to detect viruses, cell-surface receptor-like kinases with LRR domains are also implicated in antiviral defense.

Purpose of the Study:

  • To review advancements in understanding LRR proteins' role in plant antiviral immunity over the past decade.
  • To focus on the current knowledge of LRR proteins in the hypersensitive response to viruses.

Main Methods:

  • Literature review of recent studies on LRR proteins and plant antiviral immunity.
  • Analysis of research on receptor-like kinases and NB-LRR proteins in virus detection.
  • Synthesis of findings related to the hypersensitive response.

Main Results:

  • LRR proteins are key players in recognizing viral pathogens intracellularly and at the cell surface.
  • Receptor-like kinases with LRR domains contribute to antiviral defense mechanisms.
  • Significant progress has been made in elucidating the function of LRR proteins in plant antiviral immunity.

Conclusions:

  • Leucine-rich proteins are central to plant antiviral defense strategies.
  • Further research into LRR proteins, particularly in the context of the hypersensitive response, is crucial for understanding plant immunity.
  • This review consolidates current knowledge, paving the way for future investigations into plant-virus interactions.