BEH1 — Brachypodium distachyon

Summary

BdBEH1 (BRADI_1G23550V3) on Brachypodium distachyon chromosome 1 encodes a BZR/BES1 family transcription regulator with sequence-specific DNA binding activity. The gene is associated with brassinosteroid signaling pathways, including BZR/BES-regulated transcription, phosphorylation, and interactions with PIF4 and BIM1. It has been linked to the regulation of vernalization response, ethylene biosynthesis, sterol breakdown, and jasmonic acid/ethylene-dependent systemic resistance. Associations with agronomically relevant traits include inflorescence length, leaf area, root system morphology, whole plant size, bacterial disease response, and brassinosteroid content. The gene is also connected to fruit and seed traits such as fruit set, seed coat morphology, and endosperm morphology. Studies of related genes in other species link the family to plant height, grain size, heading date, sheath blight resistance, and salinity tolerance, as well as cold tolerance, leaf morphology, and chloroplast biogenesis.