OBF4 — Zea mays

Summary

ZmOBF4 (also known as TGA4, TGA1, and BZIP64) on maize chromosome 2 encodes a DNA-binding transcription factor with sequence-specific DNA binding, transcription coactivator activity, calmodulin binding, and salicylic acid binding. It is associated with the regulation of defence responses to bacteria, systemic acquired resistance, salicylic acid- and jasmonic acid-mediated signalling, gibberellic acid homeostasis, seed dormancy, nitrogen utilization, and stamen morphogenesis. The gene has been linked to agronomic traits including bacterial blight disease resistance, Cercospora leaf spot response, drought sensitivity, plant male sterility, seed set percent, shoot system elongation rate, and whole plant size. Studies of related genes in other species connect the family to nitrogen use efficiency, drought resistance, and root hair development.