Used for the quantitative detection of diamine oxidase (DAO) enzyme activity in plant samples, this ELISA kit enables researchers to assess polyamine metabolism and its role in plant growth, development, and stress responses. It is particularly useful in studies related to abiotic stress tolerance, such as drought, salinity, and heavy metal exposure, where DAO activity influences hydrogen peroxide production and signaling pathways. The kit supports high-throughput analysis in agricultural research and plant physiology, aiding in the development of stress-resistant crop varieties. Its sensitive and specific detection makes it suitable for monitoring changes in DAO levels during different growth stages or under experimental treatments.