Used for the quantitative measurement of S-adenosylmethionine decarboxylase (SAMDC) enzyme activity in plant samples. This kit enables researchers to assess the levels of active SAMDC, a key enzyme involved in polyamine biosynthesis, which plays a critical role in plant growth, development, and stress responses. It is widely applied in plant physiology and molecular biology studies to understand how polyamine metabolism is regulated under various environmental stresses such as drought, salinity, and pathogen attack. The assay is useful in agricultural research for developing stress-tolerant crop varieties and in functional genomics to evaluate gene expression effects on enzyme activity.