Used in biochemical and molecular biology research to measure thioredoxin reductase activity in plant samples. Helps assess plant responses to oxidative stress, environmental pollutants, and pathogen attacks. Widely applied in studies of plant defense mechanisms, redox signaling, and stress tolerance in crops and model plants. Enables high-throughput screening of plant genotypes for improved antioxidant capacity. Suitable for use in agricultural research, environmental monitoring, and plant physiology studies.