OsPTF1 — Oryza sativa Japonica

Summary

OsPTF1 (OS06G0193400) on rice chromosome 6 encodes a protein with IND-like, bHLH, and HLH DNA-binding domains, possessing RNA polymerase II-specific DNA-binding and transcription factor activity, as well as protein dimerization activity. The gene is associated with phosphate starvation responses, root and shoot development, and phosphorus content. It is linked to the regulation of seed size, leaf development, root hair cell development, and unidimensional cell growth, as well as positive regulation of gibberellin biosynthetic processes and negative regulation of phytochrome signaling. OsPTF1 is also associated with panicle weight, tiller number, and root length. Related genes in other species link the family to phosphorus concentration and drought tolerance. The protein localizes to the nucleus.