antioxidant-defense
Antioxidant defense refers to the network of enzymes and metabolites—such as superoxide dismutase, catalase, and compounds like ascorbate and glutathione—that plants use to neutralize reactive oxygen species generated during normal metabolism and stress. This system is critical for plant survival because environmental stressors like drought, heat, salinity, and pathogen attack all trigger oxidative bursts that can damage cellular components if left unchecked. Understanding and enhancing these defenses helps researchers develop crops with improved resilience and stress tolerance.
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