WX1 — triticum aestivum

Summary

TRAESCS7A02G070100, designated TaWX1 on chromosome 7A of bread wheat, encodes a starch synthase, chloroplastic/amyloplastic, and is associated with starch synthase activity (EC 2.4.1.242) and amyloplast localisation. The gene is associated with amylopectin anabolism, starch biosynthesis, seed development, and root gravitropism, and has been linked to pre-harvest sprouting, redox sensing, and responses to water. TaWX1 is associated with grain traits including starch content, flour protein content, grain texture, grain length, grain size, and seed weight, as well as with heading time, maturity time, grain filling period, stem elongation, net photosynthetic rate, transpiration rate, and heat tolerance. Related genes in other species link it to amylose content, grain quality, endosperm development, and traits such as panicle density, head rice yield, and popping expansion volume.