PR9 — Triticum aestivum

Summary

TRAESCS6B02G023700 (PR9) on wheat chromosome 6B encodes a knottin scorpion toxin-like domain-containing protein, also known as PR9-201. This gene is associated with resistance to powdery mildew in bread wheat and is linked to wheat powdery mildew disease response. It has been connected to phenylpropanoid metabolism, a biological process annotated on this gene. Additionally, PR9 is associated with the expression of ICE1 homolog and ubiquitinylation of ICE1 mediated by HOS1 homolog, linking it to cold temperature response and abiotic stress responses. Related genes in other species include a defensin linked by sequence similarity.