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Updated: Oct 20, 2025

Identification of Post-translational Modifications of Plant Protein Complexes
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Molecular Mechanism & Structure-Zooming in on Plant Immunity.

Alexandra Margets1, Sharmin Rima2, Matthew Helm3

  • 1Indiana University, Department of Biology, Bloomington, IN 47405, U.S.A.

Molecular Plant-Microbe Interactions : MPMI
|September 10, 2021
PubMed
Summary

Plant immunity involves complex signaling pathways. This eSymposium explored effector-triggered immunity (ETI) and pattern-triggered immunity (PTI), highlighting plant resistosomes and calcium channels in immune responses.

Keywords:
ETIIS-MPMIPTITop10MPMIcalcium signalingdefense signaling pathwaysplant immunityplant responses to pathogensresistance genesresistosome

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Area of Science:

  • Molecular Plant-Microbe Interactions (MPMI)
  • Plant Immunity
  • Molecular Mechanisms

Background:

  • The International Society for Molecular Plant-Microbe Interactions (IS-MPMI) convened an eSymposium on "Molecular Mechanism & Structure-Zooming in on Plant Immunity".
  • The symposium addressed key questions regarding the relationship between effector-triggered immunity (ETI) and pattern-triggered immunity (PTI) in plants.
  • Recent advancements in understanding plant immune signaling and protein structure/function were discussed.

Purpose of the Study:

  • To summarize progress in understanding the molecular mechanisms of ETI and PTI.
  • To highlight the role of plant resistosomes in calcium channel formation during plant immune responses.
  • To foster virtual collaboration and knowledge sharing within the MPMI community.

Main Methods:

  • Virtual eSymposium format with plenary sessions, panel discussions, and poster breakout rooms.
  • Concerted effort by multiple laboratories to study molecular mechanisms of plant immunity.
  • Focus on unanswered questions in MPMI, specifically concerning ETI and PTI.

Main Results:

  • Substantial progress has been made in unraveling complex signaling pathways underlying plant immunity.
  • The essential role of plant resistosomes in forming calcium channels during immune responses was highlighted.
  • New questions emerged regarding the control of overlapping signaling mechanisms in plant immunity.

Conclusions:

  • ETI and PTI signaling mechanisms are complex and interconnected, challenging a binary distinction.
  • Plant resistosomes play a crucial role in mediating plant defense responses through calcium channels.
  • Further research is needed to elucidate the intricate regulation of overlapping signaling pathways in plant immunity.