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Catalytic Scavenging of Plant Reactive Oxygen Species In Vivo by Anionic Cerium Oxide Nanoparticles
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Free Radicals Mediated Redox Signaling in Plant Stress Tolerance
Krishna Kumar Rai1, Prashant Kaushik2
1Centre of Advance Study in Botany, Department of Botany, Institute of Science, Banaras Hindu University (BHU), Varanasi 221005, Uttar Pradesh, India.
Life (Basel, Switzerland)
|January 21, 2023
Summary
Reactive oxygen (ROS), nitrogen (RNS), and sulfur (RSS) species are key signaling molecules in plants. Understanding their complex interactions is crucial for improving crop stress management and productivity.
Area of Science:
- Plant Biology
- Molecular Signaling
- Stress Physiology
Background:
- Abiotic and biotic stresses severely impact plant growth and productivity.
- Plants activate complex signaling networks, including reactive oxygen (ROS), nitrogen (RNS), and sulfur (RSS) species, to respond to environmental challenges.
- ROS, RNS, and RSS play critical roles in modulating plant defense mechanisms and stress tolerance.
Purpose of the Study:
- To comprehensively review recent advancements in ROS/RNS/RSS biology.
- To elucidate how ROS/RNS/RSS signaling modulates cell signaling and gene regulation for abiotic stress management in crops.
- To summarize the interactions of ROS/RNS/RSS with other plant growth regulators and their effects on essential plant functions.
Main Methods:
- Literature review of recent research on ROS/RNS/RSS signaling in plants.
- Analysis of molecular mechanisms underlying ROS/RNS/RSS-mediated stress responses.
- Synthesis of information on the interplay between ROS/RNS/RSS and plant growth regulators.
Main Results:
- ROS at low levels promote plant survival by regulating redox homeostasis and stress-defense genes.
- RNS enhances crop stress tolerance through post-translational modifications like S-nitrosation and tyrosine nitration.
- RSS emerges as a significant factor in mitigating oxidative damage and modulating plant physiological processes.
Conclusions:
- Intertwined ROS/RNS/RSS signaling is vital for crop stress management, although molecular mechanisms require further investigation.
- ROS/RNS/RSS signaling pathways interact with plant growth regulators to influence photosynthesis, cell growth, and apoptosis.
- Further research into ROS/RNS/RSS biology can lead to enhanced crop resilience and productivity under stress conditions.
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