HD1 — Oryza sativa Indica Group

Summary

BGIOSGA012324 (HD1, OiHD1) on chromosome 3 of Indica rice encodes a protein with histone deacetylase activity, NAD-independent, and is also annotated for histone demethylase activity, transcription corepressor activity, and calcium-dependent protein serine/threonine kinase activity. The gene is associated with stress responses, including salt and osmotic stress resistance, as well as growth, root and lateral root development, and seed maturation. It is linked to melatonin metabolism, tubulin deacetylation, fruit abscission, and regulation of embryonic development. Localisation evidence places it in the PRC2 complex, HDAC complex, and chloroplast envelope. The gene is associated with traits such as rice thrips damage response, floral organ length, plant female sterility, fruit quality and ripening, panicle number, spikelet fertility, and branch angle. Related genes in other species link the family to female gametophyte development and post-germination growth.