SAPK2 — Oryza sativa Japonica

Summary

OS03G0610900, also known as SAPK2, SAPK3, or SAPK10, encodes a serine/threonine protein kinase (EC 2.7.11.1) with ATP binding activity, belonging to the protein kinase superfamily. In rice, this gene is associated with drought stress tolerance, salt stress, yield, root hair elongation, grain size, tiller number, and seedling growth. It is linked to abscisic acid (ABA) biosynthesis, nitrogen utilization, nitrate import, and programmed cell death. The protein localizes to the cytosol, cytoplasm, and nucleus. Additional associations include panicle length, root hair length, seed dormancy, cold tolerance, flowering time, stomatal closure, and disease resistance. Studies of related genes in other species link the family to grain yield, spikelet number, and proline content.