GS1 — Oryza sativa Japonica

Summary

OsGS1 (GS1) on rice chromosome 9 encodes a protein with riboflavin kinase, FMN adenylyltransferase, and sugar-phosphatase activities, including sn-glycerol 3-phosphatase activity, and belongs to the HAD-like superfamily. The gene is associated with nitrogen utilization and response to nitrate, photorespiration, the TCA cycle, and primary metabolism, as well as glycerol, sucrose, glutathione, phenylpropanoid, and lignin anabolism. It is linked to detoxification, endosperm development, and syngamy. The encoded protein localizes to the cytosol, mitochondria, and plasmalemma. OsGS1 is associated with numerous agronomic traits, including grain yield, grain weight, grain number, spikelet weight and number, panicle number, tiller number, plant height, amylose content, sucrose content, chlorophyll content, root length, lateral root length, drought tolerance, and grain filling period. Studies of related genes in other species link the family to osmotic, salt, and oxidative stress tolerance.