HD1 — Oryza sativa Japonica

Summary

Rice HD1 (HDAC2, Os02g0215200) encodes a histone deacetylase with NAD-independent activity, also annotated with histone demethylase, transcription regulator and corepressor activities, and is a structural constituent of chromatin. It is associated with diverse biological processes including flower formation, negative regulation of seed maturation, fruit abscission, and responses to abiotic and biotic stimuli. The gene is linked to numerous agronomic traits such as grain plumpness, culm length, floral organ length, plant female sterility, branch angle, leaf elongation rate, total soluble sugar content, brassinosteroid content, and rice thrips damage response. It is also associated with drought, salinity, and salt tolerance, as well as ABA, jasmonic acid, and BR signaling. Related genes in other species link the family to female gametophyte development, flowering transition, and systemic acquired resistance.