AIG1 — Cucumis sativus

Summary

CsAIG1 (CSA_5G139540) on cucumber chromosome 5 encodes a protein with domains including a polyketide cyclase/dehydrase and a START-like domain, and exhibits abscisic acid binding, protein phosphatase inhibitor activity, and protein kinase activator activity. The gene is associated with sex differentiation, regulation of abscisic acid-mediated signaling, stomatal opening, seed dormancy release, chlorophyll breakdown, and carotenoid anabolism. It has been linked to traits such as vegetative vigor, seed yield, water use efficiency, transpiration rate, osmotic response sensitivity, and nitrate sensitivity, as well as phenotypes including drought resistance, salt tolerance, flooding tolerance, and pathogen resistance. Studies of related genes in other species connect the family to cold tolerance, fruit ripening, and resistance to aphids and biotrophic pathogens.