Used to measure 3-hydroxy-3-methylglutaryl-CoA reductase (HMGR) enzyme activity in plant samples, this ELISA kit supports research in plant metabolism, particularly in the mevalonate pathway responsible for isoprenoid and sterol biosynthesis. It enables scientists to evaluate how environmental stresses, genetic modifications, or growth regulators affect HMGR activity. Commonly applied in plant physiology and molecular biology studies, it helps in understanding metabolic flux and regulation in crops and model plants. The kit is also useful in screening plant lines for improved secondary metabolite production, such as pharmaceuticals or essential oils.