D61 — Triticum aestivum

Summary

TRAESCS3B02G275000 (TaD61, also known as TaBRI1) on wheat chromosome 3B encodes a leucine-rich repeat receptor-like kinase (LRR-RLK) with a BRI1 island domain, possessing transmembrane receptor protein tyrosine kinase activity and protein kinase inhibitor activity. The gene is associated with brassinosteroid receptor kinase activity and the negative regulation of brassinosteroid biosynthesis, as well as activation of brassinosteroid-mediated signalling. TaD61 is linked to numerous agronomically important traits including grain weight and width, biomass, seed yield, spikelet number, plant height (dwarfism), shoot growth angle, root dry weight and hair length, leaf shattering, anther morphology, male sterility, and responses to drought, salt, temperature, aluminum, aphids, and powdery mildew. It localises to the plasma membrane and is connected to auxin signalling, regulation of seed size, and reproductive structure development. Studies of related genes in other species link the family to plant architecture, yield, and fungal disease resistance.