WRKY22 — Capsicum annuum

Summary

CaWRKY22 (T459_21855) on pepper chromosome 8 encodes a WRKY-domain transcription factor with promoter-specific chromatin binding, sequence-specific DNA binding, and protein homodimerization activity. It localises to the nucleus and is associated with abscisic acid signalling in stomatal movement, positive regulation of leaf senescence, responses to chitin, salicylate, jasmonic acid, gibberellin, hypoxia, bacteria, fungi, and cell death. The gene has been connected to disease resistance, pathogen resistance, bacterial wilt resistance, heat tolerance, cryo-stress tolerance, ethylene sensitivity and production, salicylic and jasmonic acid signalling, root development, lateral root development, primary root length, hypocotyl length, aphid susceptibility, and senescence. Studies of related genes in other species link the family to innate immunity, leaf senescence, submergence stress tolerance, induced systemic resistance, lateral root growth, primary root elongation, and ethylene biosynthesis.