ASD — Cucumis sativus

Summary

CsASD (CSA_7G414460) on cucumber chromosome 7 encodes a short-chain dehydrogenase reductase 3b-like protein belonging to the SDR family with NAD(P)-binding domain. The enzyme exhibits multiple dehydrogenase activities including carveol, isopiperitenol, momilactone-A synthase, borneol, secoisolariciresinol, and xanthoxin dehydrogenase activities, along with oxidoreductase, isomerase, and aldo-keto reductase functions. CsASD is associated with abscisic acid biosynthesis and regulation, monoterpenoid and lignan anabolism, chlorophyll breakdown, anaerobic respiration, fermentation, and responses to UV, fructose, and sugar-mediated signaling. The gene has been connected to traits including photosynthetic rate, quantum yield, transpiration rate, stomatal resistance, soluble protein content, and ethylene sensitivity. Phenotypic associations include drought tolerance, seed dormancy and germination, herbivore resistance, resistance to Botrytis cinerea, stomatal closure and density, organ size, branching, and fertility. The protein localizes to cytosol, cytoplasm, nucleus, mitochondria, extracellular space, and stress granules.