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Area of Science:

  • Plant Biology
  • Molecular Biology
  • Biochemistry

Background:

  • Hydrogen peroxide (H2O2), nitric oxide (NO), and hydrogen sulfide (H2S) are key signaling molecules.
  • High concentrations induce nitro-oxidative stress, but they also mediate stress adaptation.
  • Precise regulation of these molecules and their reactive derivatives (ROS, RNS, RSS) is essential.

Purpose of the Study:

  • To provide a comprehensive overview of the interactions between H2O2, NO, H2S, and their transcriptional regulators.
  • To highlight recent findings on redox-regulated transcription factor (TF) networks.
  • To discuss the significance of these networks in plant stress responses.

Main Methods:

  • Literature review of existing research on H2O2, NO, H2S, and TF interactions.
  • Analysis of the mechanisms by which TFs act as redox sensors.
  • Synthesis of information on transcriptional reprogramming in response to oxidative stress.

Main Results:

  • H2O2, NO, and H2S exhibit complex metabolic pathways and interactive networks.
  • Transcription factors (TFs) are central redox sensors, regulating ROS, RNS, and RSS metabolism.
  • TFs perceive oxidative cues via post-translational modifications, conformational changes, and shuttling, leading to transcriptional reprogramming.

Conclusions:

  • Redox-regulated TF networks play a critical role in plant adaptation to adverse environmental conditions.
  • A deeper understanding of these intricate networks is crucial for plant stress biology.
  • Further research is needed to fully elucidate the comprehensive interactions and regulatory mechanisms.