HRD — Hordeum vulgare subsp. vulgare

Summary

HvHRD (HORVU.MOREX.R3.2HG0187010) on barley chromosome 2H encodes a transcription factor with DNA-binding and transcription cis-regulatory region binding activity, belonging to the AP2/ERF domain family (DRE1A-I subfamily). The protein localises to the nucleus and is associated with the regulation of DNA-templated transcription, response to stress, defence response to fungi, protein breakdown, and glucosinolate metabolism. Studies of related genes in other species link the family to grain yield, grain number, grain size, seed size, protein content, sodium uptake, and quality traits. In Arabidopsis, the family has been connected to water use efficiency, drought tolerance, and salt tolerance, while in rice it has been associated with biomass, photosynthesis, yield, stress tolerance, and shoot and root biomass.