GW2 — Triticum turgidum subsp. durum

Summary

TRITD7BV1G211620 (GW2-A1) on durum wheat chromosome 7B encodes a protein with ubiquitin ligase activity and zinc binding. The gene is associated with regulation of seed size, cell division, protein ubiquitination, amylopectin and starch anabolism, and nitric oxide storage, and its product localizes to the cytoplasm. GW2-A1 is associated with grain yield, grain weight, seed weight, grain size, amylose content, starch content, protein content, and grain filling period. Studies of related genes in other species link the GW2 family to additional grain traits including grain length, width, thickness, shape, number, and appearance, as well as spikelet fertility and number, panicle number, tiller number, plant height, heading time, seed shattering, seed dormancy, leaf width, chlorophyll content, flour protein content, and heterosis.