HD3A — Oryza sativa Indica Group

Summary

BGIOSGA022351 (HD3A, also known as OiVRN3, RFT1, OiRFT1, VRN3) on chromosome 6 of Indica rice encodes an uncharacterized protein with a phosphatidylethanolamine-binding domain (PEBP family). The gene is associated with phosphatidylethanolamine binding activity. In this species, HD3A is linked to flowering, heading date, floral and shoot apical meristem development, grain traits, strigolactone, leaf growth, domestication, and amino acid content. It is associated with photoperiodism, vernalization response, regulation of the vegetative-to-reproductive phase transition, inflorescence and flower development, and cell differentiation. The protein localizes to the ER, cytoplasm, and nucleus. Associations also include days to heading, grain yield, grain weight, grain number, grain color, plant height, maturity time, cold tolerance, chlorophyll content, heterosis, and protein content. Studies of related genes in other species link the family to heading time, spike weight, grain dormancy, frost tolerance, and other agronomic traits.