Used for quantitative detection of xanthine dehydrogenase (XDH) enzyme activity in plant tissue extracts. This ELISA kit enables researchers to assess XDH levels in studies related to plant nitrogen metabolism, purine degradation, and stress responses. It is particularly useful in agricultural and botanical research to monitor plant physiological status under environmental stresses such as drought, salinity, or pathogen attack. The assay supports high-throughput analysis, making it suitable for screening plant varieties or experimental treatments in crop science and plant biochemistry.