HD1 — Oryza sativa Japonica

Summary

OsHD1 (HD1) on rice chromosome 11 encodes a histone deacetylase (EC 3.5.1.98) with NAD-independent activity, and is also annotated for histone deacetylase binding, transcription corepressor activity, and structural chromatin constituent functions. The gene is associated with flower formation, negative regulation of seed maturation, fruit abscission, and responses to abiotic stresses including drought, salinity, and ABA. It has been linked to grain plumpness, culm length, floral organ length, plant female sterility, and fruit ripening and quality traits. Localisation evidence connects it to the HDAC complex, PRC2 complex, and chloroplast envelope. Studies of related genes in other species link the family to female gametophyte development, flowering transition, systemic acquired resistance, and abiotic stress tolerance.