CS1 — Oryza sativa Indica Group

Summary

BGIOSGA012374 (CS1, also known as OiCS1) on chromosome 3 of Indica rice encodes a haem peroxidase of the Ccp1-like family, with L-ascorbate peroxidase activity (EC 1.11.1.11). The gene is associated with diverse biological processes including cellular oxidant detoxification, ROS metabolism, H₂O₂-mediated signaling, chloroplast-nucleus signaling, stomatal complex development, and auxin metabolism. It localizes to the peroxisome membrane, chloroplast thylakoid, and chloroplast envelope. In rice, CS1 family members have been linked to blight and bacterial blight tolerance, drought stress response, photosynthesis, plant growth and architecture, salt and cold stress tolerance, seed and seedling traits, senescence, and gall midge resistance. The gene is also associated with traits including bacterial blight disease resistance, cadmium concentration, flowering time, leaf senescence, root length, seed viability, and photosynthetic rate. Studies of related genes in other species link the family to salt, heat, and oxidative stress tolerance.