CS1 — Oryza sativa Indica Group

Summary

BGIOSGA006268 (CS1, also known as OiCS1) on chromosome 2 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, H₂O₂-mediated signaling, chloroplast-nucleus signaling, 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, drought stress, photosynthesis, reactive oxygen species metabolism, salt and cold stress, plant growth and architecture, seed and seedling traits, and gall midge resistance. The gene is also associated with traits such as bacterial blight disease resistance, cadmium concentration, flowering time, leaf senescence, photosynthetic rate, root length, seed viability, and stomatal complex closure time. Studies of related genes in other species link the family to heat, salt, oxidative, and high-light stress tolerance, as well as chloroplast retrograde signaling.