CS1 — Oryza sativa Indica Group

Summary

BGIOSGA015065 (CS1, OiCS1) on chromosome 4 of Indica rice encodes a haem peroxidase 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, auxin metabolism, and cell cycle G2/M phase transition. It localizes to the chloroplast thylakoid membrane, peroxisome membrane, and stress granules. CS1 is linked to traits such as bacterial blight disease resistance, drought stress tolerance, photosynthesis, plant growth and architecture, seed viability, flowering time, leaf senescence, root length, cadmium concentration, and stomatal complex closure time. Related genes in other species are associated with heat, cold, salt, high-light, and oxidative stress tolerance, as well as chloroplast retrograde signaling and pathogen resistance.