Reactive oxygen species scavenging capacity
nounPronunciation: /riˈæktɪv ˈɒksɪdʒən ˈspiːʃiz ˈskævɪndʒɪŋ kəˈpæsɪti/
The plant cell's ability to neutralize and remove excess free radicals through enzymatic and non-enzymatic pathways, including superoxide dismutase, catalase, and glutathione peroxidase activity. This capacity is critical for mitigating damage from stress-induced oxidative imbalance.
Plain English
The plant's ability to remove harmful free radical molecules that form during environmental stress.
Etymology & History
Usage
"Salt-tolerant genotypes demonstrated significantly higher reactive oxygen species scavenging capacity than salt-sensitive cultivars."
Style guide notes: Specify measured enzyme activities and non-enzymatic components when quantifying scavenging capacity.
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Related Terms
Frequently Asked Questions
Which enzymes contribute to ROS scavenging capacity?
Superoxide dismutase, catalase, peroxidases, and glutathione-S-transferases are primary enzymatic antioxidants.
How do environmental stresses affect ROS scavenging capacity?
Stress conditions increase ROS production, depleting scavenging enzymes and reducing the plant's defensive capacity.
Why Test Candidates on This?
Fundamental parameter for evaluating plant resilience to multiple abiotic stresses including drought, salinity, and temperature extremes.
Required skill level: Mid