BRI1 — Brachypodium distachyon

Summary

BRADI_1G72572V3 (BRI1) on chromosome 1 of Brachypodium distachyon encodes a protein with receptor serine/threonine kinase activity, steroid binding, and signaling receptor activity, and contains leucine-rich repeat and protein kinase domains. The gene is associated with brassinosteroid-mediated signaling, detection of brassinosteroid stimulus, and hormone-mediated signaling, as well as regulation of cell growth, skotomorphogenesis, seedling development, and post-embryonic development. It is linked to defense responses, including upregulation of defense response, activation of defense response to bacteria, and defense response to fungi, along with heat acclimation, response to light stimulus, and microtubule bundling. The encoded protein localizes to the plasma membrane, ER membrane, endosome, and nucleus. Associations with leaf angle, plant height, and drought tolerance have been noted. Studies of related genes in other species link the family to grain size, grain weight, grain yield, chlorophyll content, and drought sensitivity.