ERS — Cucumis sativus

Summary

CSA_3G141850 (ERS/ETR2) in cucumber (Cucumis sativus) on chromosome 3 encodes a dual-specificity protein kinase with histidine phosphotransfer kinase activity, ethylene receptor activity, and copper binding, featuring ETR1_N, GAF, and histidine kinase dimerization domains. The gene is associated with sex determination and differentiation, flower formation, ethylene-mediated signaling, and responses to carbon starvation. It is linked to fruit ripening, fruit firmness, and seed yield traits, as well as responses to water stress, temperature stress, aluminum, aphids, and powdery mildew susceptibility. Localization evidence connects it to the plastid stroma, ER lumen, and proteasome complex. Studies of related genes in other species link the family to ethylene signal transduction, disease resistance, osmotic stress tolerance, and iron acquisition, and to carpel-bearing flower production and parthenocarpy.