FBR6 — Oryza sativa Japonica

Summary

OsFBR6 (OsSPL14) on rice chromosome 8 encodes a transcription activator with an SBP-like domain and an ankyrin repeat-containing superfamily domain, binding DNA and zinc. In rice, the gene is associated with grain number per panicle, grain yield, drought tolerance, root elongation, grain appearance quality, and grain chalkiness. It is linked to the regulation of nitrogen utilization, gibberellic acid homeostasis, seed dormancy, auxin anabolism and transport, starch metabolism, phloem transport, salicylic acid-mediated signaling, hyperosmotic salinity response, and reactive oxygen species metabolism. The protein localizes to the nucleus. Related genes in other species link the family to resistance to programmed cell death, plant architecture, and disease resistance, as well as to days to tassel, ear weight, and cold tolerance.