DA2 — Oryza sativa Indica Group

Summary

BGIOSGA007870 (OiDA2, also known as OiGW2) on chromosome 2 of Indica rice encodes a Sip5/DA2 family protein with ubiquitin ligase activity and zinc-binding capability. The gene is associated with the regulation of seed size and organ growth, protein ubiquitination, and detoxification processes. It has been linked to numerous grain traits including grain weight, size, shape, length, number, and filling period, as well as panicle number, spikelet fertility and sterility, plant height, rachis length, and leaf width. Associations also extend to yield, quality, nutritional quality, lodging resistance, pathogen resistance, leaf senescence, cell proliferation, cell division, and responses to cold stress. Studies of related genes in other species connect the family to organ size regulation.