AP2 — Triticum aestivum

Summary

TRAESCS2D02G515800 (symbol AP2) on bread wheat chromosome 2D encodes a transcription factor with an AP2/ERF DNA-binding domain, localised to the nucleus and transcription regulator complexes. In wheat, AP2 is associated with resistance to stripe rust, lodicule development and cleistogamy. The gene is associated with regulation of floral organ abscission, seed abscission, seed development, starch biosynthesis, endosperm development, hormone metabolism, and responses to karrikin and nitrate. Associations also include traits such as grain number, grain weight per spike, flour yellowness, heading time, stem length, awn length, anther extrusion, drought sensitivity, and resistance to Fusarium head blight and stem rust. Related genes in other species link it to seed shattering, rachis internode length, and abscisic acid concentration and sensitivity.