BZIP63 — Capsicum annuum

Summary

CaBZIP63 (T459_22181) on pepper chromosome 8 encodes a basic leucine zipper (bZIP) transcription factor with DNA-binding and protein dimerization activities. It is associated with the regulation of starch biosynthesis, seed maturation, and amino acid metabolism, as well as responses to glucose, starvation, superoxide, and oomycete-derived molecules. The gene has been linked to systemic acquired resistance via salicylic acid signaling, ethylene-mediated signaling, programmed cell death, and hydrogen peroxide metabolism. Traits connected to CaBZIP63 include seed protein content, biomass yield, root length, anthocyanin content, and responses to abiotic stresses such as low temperature and oxidative stress. Studies of related genes in other species link the family to circadian phase regulation, starch degradation, seed germination under osmotic stress, and ABA-mediated abiotic stress responses.