BLR — Oryza sativa Indica Group

Summary

BGIOSGA019968 (BLR, also known as OiBLR, OiBLH9, OiBLH8, HB-6, VAN, OiVAN, OiBLH5, OiPNF, PNF, RPL, OiBEL1) on chromosome 5 of Indica rice encodes a TALE homeodomain transcription regulator with DNA-binding, transcription coactivator, and RNA-binding activities. The gene is associated with grain shattering, awn development, seed traits, and abscission-zone development in rice. It has been linked to floral organ identity and morphogenesis, including carpel and ovary development, as well as leaf margin morphology, shoot growth angle, panicle number, and pedicel length. Additional associations include gibberellic acid content and homeostasis, pectin methylesterification, seed mucilage adherence, drought response, and lignin deposition. The gene is also connected to meristem maintenance, organ separation, and responses to ethylene and auxin signaling. Studies of related genes in other species link the family to shoot apical meristem development, phyllotaxy, and fruit patterning.