WRKY3 — Oryza sativa Japonica

Summary

OsWRKY3 (also known as WRKY28, OsWRKY71, and OsWRKY76) on rice chromosome 6 encodes a WRKY domain-containing protein with DNA-binding transcription factor activity, as well as magnesium chelatase activity, promoter-specific chromatin binding, and protein dimerization activity. The gene is associated with drought tolerance, cold tolerance, blast disease resistance, and osmotic stress tolerance observed in rice. It is linked to defense responses, jasmonate and salicylic acid signaling, and abscisic acid-mediated stomatal movement. Associations also include regulation of leaf senescence, auxin biosynthesis, anthocyanin metabolism, and plant organ morphogenesis. The encoded protein localizes to the nucleus, chloroplast inner membrane, and magnesium chelatase complex. Studies of related genes in other species connect the WRKY family to thermomorphogenesis, phototropism, and defense signaling.