H2B — Brassica oleracea var. botrytis

Summary

BoH2B (BOLND125_C03P013640.1) on cauliflower chromosome 3 encodes a histone H2B protein, a core structural component of nucleosomes that also possesses histone acetylase, deacetylase, and PRMT activities, along with DNA-binding, protein-binding, and transcription cofactor activities. The gene is associated with nucleosome assembly, chromatin organization, and centromere complex localization, as well as diverse biological processes including meiotic chromosome separation, mitochondrial distribution, mucilage pectin anabolism, and responses to biotic stress, silver ions, and osmotic stress. BoH2B is linked to numerous agronomically relevant traits such as days to flowering, inflorescence and flower development, leaf trichome density, anthocyanin content, seed growth and development, root thickness, stem senescence, and responses to high and low temperature, aluminum, cytokinin, brassinosteroid, and abscisic acid. Studies of related genes in other species connect the H2B family to centromere targeting, haploid production, chromatin structure, disease resistance, salt stress response, and thermotolerance.