Reactive oxygen species scavenging
nounPronunciation: /rɪˈæktɪv ˈɒksɪdʒən ˈspiːʃiːz ˈskævɪndʒɪŋ/
The biological process by which plants detoxify harmful reactive oxygen species (ROS) through enzymatic and non-enzymatic mechanisms, preventing cellular damage and maintaining redox homeostasis. This includes pathways utilizing glutathione, ascorbate, and phenolic compounds.
Plain English
The removal and neutralization of harmful reactive oxygen molecules generated during plant stress.
Etymology & History
Usage
"Enhanced ROS scavenging capacity through overexpression of catalase improves plant tolerance to multiple abiotic stresses."
Style guide notes: Specify which ROS species (superoxide, hydrogen peroxide, hydroxyl radical) and measurement units for scavenging rates.
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Related Terms
Frequently Asked Questions
What are main ROS scavenging pathways?
Ascorbate-glutathione cycle, enzymatic catalase/SOD activity, and phenolic compound metabolism are primary ROS neutralization mechanisms.
Why is ROS scavenging important in stress tolerance?
Efficient ROS removal prevents oxidative damage to proteins, lipids, and DNA, maintaining cellular function under stress conditions.
Why Test Candidates on This?
Essential in stress physiology research, linking oxidative stress to tolerance mechanisms across multiple stress types.
Required skill level: Senior