PRR2 — Capsicum annuum

Summary

CaPRR2 (T459_17005) on pepper chromosome 6 encodes a phosphorelay response regulator with DNA-binding transcription factor activity, belonging to the GLK1/2-like and Myb domain families. It is associated with pigment accumulation, including chlorophyll and carotenoid anabolism, as well as fruit color and development. The gene has been linked to circadian rhythm, cytokinin signaling, stomatal closure, and responses to salinity, osmotic stress, and bacteria. Associations also include fruit pigment accumulation, disease resistance, salt tolerance, and defense against pathogens such as Pseudomonas syringae. Related genes in other species link the family to calcium ion homeostasis and hypocotyl elongation, as well as rind color and spotted rind. The protein localizes to the nucleus, cytosol, and cytoplasm.