Used for quantifying the amount and activity of OPR (12-oxophytodienoate reductase) enzyme in plants, which plays a crucial role in the jasmonate biosynthesis pathway. This pathway is involved in plant responses to environmental stresses, including biotic factors such as insect herbivory and microbial infections, as well as abiotic stresses like drought and wounding. The ELISA kit enables precise detection of OPR levels in plant tissue extracts, supporting research in plant physiology, stress response mechanisms, and redox regulation. It is applied in agricultural studies to evaluate crop resilience, aid in breeding stress-tolerant varieties, and investigate protein oxidation and defense signaling in academic and biotechnological laboratories.