Used in plant physiology research to quantify 9-cis-epoxy carotenoid dioxygenase (NCED), a key enzyme in abscisic acid (ABA) biosynthesis. Helps study plant stress responses, particularly drought tolerance, by measuring NCED levels in plant tissues. Enables researchers to evaluate how environmental stresses regulate ABA production, supporting development of stress-resistant crops. Widely applied in agricultural science, plant biochemistry, and genetic engineering studies.