GW5 — Oryza sativa Indica Group

Summary

BGIOSGA019303 (GW5, also known as OiIQD27) on chromosome 5 of Indica rice encodes a calmodulin-binding protein containing a DUF4005 domain and an IQ motif EF-hand-binding site. It is localized to the nucleus. GW5 is associated with grain size, grain shape, grain length, grain width, grain weight, and grain yield, as well as panicle weight, shoot dry weight, harvest index, and heterosis. The gene has also been connected to cell proliferation, spikelet development, domestication, stress tolerance, salt stress, and resistance. Studies of related genes in other species link the family to seed size, grain thickness, grain appearance, amylose content, protein content, drought sensitivity, and stigma exsertion.