GS1 — Oryza sativa Japonica

Summary

OsGS1 (OS10G0568900) encodes a protein with riboflavin kinase, FMN adenylyltransferase, and sn-glycerol 3-phosphatase activities, and belongs to the HAD-like superfamily. In rice, it is associated with nitrogen utilization and response to nitrate, photorespiration, the TCA cycle, and the biosynthesis of glycerol, glutathione, sucrose, lignin, and phenylpropanoids. The gene has been linked to diverse agronomic traits including grain yield, grain weight, spikelet number and weight, panicle number, tiller number, plant height, amylose and sucrose content, root and lateral root length, chlorophyll content, and drought tolerance. It is also associated with endosperm development, syngamy, and detoxification, with the protein localizing to the cytosol, mitochondria, and plasmalemma. Studies of related genes in other species link the family to salt, osmotic, oxidative, and desiccation stress tolerance, as well as grain protein content and seed viability.