PRR2 — Cucumis sativus

Summary

CSA_3G016400, designated PRR2 (also known as APRR2), encodes a phosphorelay response regulator with sequence-specific DNA-binding and transcription factor activity, belonging to the GLK1/2-like and Myb-domain families. In cucumber, this gene is associated with chlorophyll metabolism, pigmentation, shoot regeneration, circadian rhythm, cytokinin signaling, and responses to bacteria and salinity. It has been linked to fruit color, fruit development, and pigment accumulation, as well as disease resistance, salicylic acid biosynthesis, and camalexin production. Associations with exocarp thickness, brassinosteroid and abscisic acid sensitivity, root thickness, and salt tolerance have also been noted. Studies of related genes in other species connect the family to pericarp and rind color, carotenoid content, and plant immunity. The protein localizes to the nucleus, cytosol, and cytoplasm.