HD1 — Brassica oleracea var. botrytis

Summary

BoHD1 (HD1) on cauliflower chromosome 1 encodes a histone deacetylase with NAD-independent activity, belonging to the HDAC_I/II family and possessing histone deacetylase binding, transcription regulator and corepressor activities, as well as sequence-specific DNA binding. The gene is associated with numerous developmental and regulatory processes, including negative regulation of seed maturation, floral organ abscission, fruit abscission, gibberellin catabolism, melatonin metabolism, and regulation of shoot apical meristem development. It has been linked to traits such as floral organ length, fruit quality and ripening, total soluble sugar content, carotenoid content, branch angle, plant male sterility, germination rate, and responses to jasmonic acid, silver ion, and insect damage. The encoded protein localises to the nucleus, nucleolus, cytosol, and mitochondria, and is part of the Sin3-type and HDAC complexes. Studies of related genes in other species link the family to flower development, senescence, histone acetylation, salinity tolerance, drought tolerance, and defence against necrotrophic pathogens and insects.