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Related Experiment Video

Updated: May 10, 2025

Design, Fabrication, and Administration of the Hand Active Sensation Test HASTe
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H2O2-driven plant immunity requires post-translational modification as a switch.

Zhaolei Li1, Xueping Zhou2, Fangfang Li1

  • 1State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 10093, China.

Trends in Plant Science
|April 23, 2025
PubMed
Summary
This summary is machine-generated.

Hydrogen peroxide (H2O2) is vital for plant immunity. This study reveals H2O2 fine-tunes key transcription factors, enhancing plant resistance to stress and infection through post-translational modifications.

Keywords:
H(2)O(2)plant immunitypost-translational modificationtranscription factor

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Area of Science:

  • Plant Biology
  • Molecular Plant Pathology
  • Biochemistry

Background:

  • Hydrogen peroxide (H2O2) plays a critical role in plant stress and immunity.
  • The precise regulatory mechanisms of H2O2 in these processes are not fully understood.

Purpose of the Study:

  • To elucidate how H2O2 regulates plant immunity signaling pathways.
  • To investigate the role of H2O2 in modulating transcription factor activity.

Main Methods:

  • Analysis of post-translational modifications (PTMs).
  • Study of transcription factors basic helix-loop-helix 25 (bHLH25) and CCA1 HIKING EXPEDITION (CHE).
  • Investigation of plant immunity signaling pathways.

Main Results:

  • H2O2 enhances plant resistance in both infected and distal tissues.
  • H2O2 fine-tunes the PTMs of bHLH25 and CHE transcription factors.
  • These modifications are crucial for plant immunity signaling.

Conclusions:

  • H2O2 acts as a key regulator in plant defense mechanisms.
  • Targeting PTMs of bHLH25 and CHE offers a potential strategy for improving plant resistance.