NH1 — Oryza sativa Japonica

Summary

Os01g0194300 (NH1, also known as OsNPR1) encodes a protein with transcriptional co-regulator activity, salicylic acid binding, calmodulin binding, and oxidoreductase activity acting on a sulfur group of donors, containing BTB/POZ, ankyrin repeat, and NPR1/NIM1-like domains. In rice, NH1 is associated with resistance to Xanthomonas oryzae pv. oryzae (bacterial blight) and Magnaporthe oryzae (blast), as well as with lesion-mimic/cell death phenotypes and responses to salicylic acid, jasmonic acid, and ethylene. The gene is linked to regulation of defence response to bacteria, phytoalexin biosynthesis, nuclear transport, and response to toxic substances. Additional associations include rice yellow mottle virus resistance, panicle number, seed longevity, drought sensitivity, and iron content. Studies of related genes in other species link the family to systemic acquired resistance, pathogen resistance, and oxidative stress tolerance.