HB-3 — Oryza sativa Japonica

Summary

OsHB-3 (OS08G0242400) on rice chromosome 8 encodes a homeodomain-containing transcription factor of the WOX11-like family, with DNA-binding, transcription coactivator and protein-binding activities. The gene is associated with crown root development, initiation and emergence, root architecture, adventitious root formation, and root elongation. It has been linked to auxin, cytokinin and gibberellic acid responses, as well as drought resistance, biomass, tiller number and architecture. Additional associations include seed shattering, seed set percent, plant male sterility, flowering time, leaf senescence, anthocyanin content, and responses to ethylene and nitrogen. The product localises to the nucleus and cytoplasm and is associated with organogenesis, meristem development, regeneration, cell polarization, and regulation of developmental processes. Related genes in other species are linked to embryonic patterning, somatic embryogenesis, and shoot meristem development.