EF1 — Oryza sativa Japonica

Summary

OsEHD1 (EF1) on chromosome 10 encodes a transcription factor with sequence-specific DNA binding activity, containing Myb and response-regulator receiver domains characteristic of the ARR-like family. The gene is associated with flowering time and heading date in rice, and is linked to photoperiodism, circadian rhythm, cytokinin signaling, and flower development. It is associated with yield-related traits including grain number, grain weight, grain length and width, panicle length, tiller number, plant height, and seed size. Associations with drought tolerance, leaf and shoot traits, and heterosis have also been reported. The encoded protein localises to the nucleus and is associated with chromatin modeling, histidyl-aspartyl phosphorelay, and responses to abscisic acid and cytokinin. Studies of related genes in other species link the family to root and shoot fresh weight, root length, and seed germination.