H4 — Brachypodium distachyon

Summary

BdH4 (BRADI_4G06040V3) on chromosome 4 of Brachypodium distachyon encodes a histone H4 protein, a core structural constituent of chromatin that also possesses histone acetylase, deacetylase, methylase, and DNA-binding activities. The gene is associated with nucleosome assembly, chromatin remodeling, and telomeric silencing. It is linked to the regulation of flowering time, including photoperiodism and the transition from vegetative to reproductive phase, as well as vernalization response, seed maturation, endosperm development, and somatic embryogenesis. Associations also include responses to UV-B, bacterial blight disease resistance, stem senescence, shoot branching, leaf and root morphology traits, and tolerance to high and low temperature stress, salt, and abscisic acid. The protein localizes to multiple cellular compartments, including the nucleolus, thylakoid, chloroplast envelope, and plasmodesmata.