HTD1 — Oryza sativa Japonica

Summary

OsHTD1 (HTD1) on rice chromosome 12 encodes a WD40 repeat-containing protein with glutamate-rich repeats, annotated with transcription corepressor binding, histone binding, nucleic acid binding, and protein binding activities. It is associated with chromatin silencing and Cul4-RING E3 ubiquitin ligase complexes, and localises to the nucleus, cytosol, and plasma membrane. The gene is linked to leaf senescence, chlorophyll breakdown, cell death, defence response to bacteria, and regulation of DNA-templated transcription, as well as responses to heat, arsenic, and UV light. Agronomically, HTD1 is associated with tillering capacity, tiller number, plant height, grain size, seed size, seed shattering, flowering time, chlorophyll content, anthocyanin content, and disease tolerance. It has also been connected to heat stress tolerance, salt tolerance, and photomorphogenesis.