PIP — Cucumis sativus

Summary

CsPIP (CSA_4G179110) on cucumber chromosome 4 encodes a proline iminopeptidase (EC 3.4.11.5) with aminopeptidase activity, belonging to the peptidase S33 and AB_hydrolase_1 domain families. The gene is associated with proteolysis, fruit development, seed germination, and responses to salt, metal, and thirst. It has been linked to traits including drought tolerance, plant height, root length, photosynthetic rate, transpiration rate, stomatal resistance, and carbohydrate content. The encoded protein localizes to the cytosol, cytoplasm, mitochondria, and secretory vesicles. Studies of related genes in other species connect the family to root hydraulic conductance and water transport, while sequence similarity links CsPIP to traits such as leaf water potential, leaf relative water content, net photosynthetic rate, anthocyanin content, chlorophyll content, and phosphorus and potassium concentrations.