CBL — Brachypodium distachyon

Summary

BdCBL (BRADI_1G69730V3) on chromosome 1 of Brachypodium distachyon encodes a protein with CGS1/2 and Cys_met_metab_PP domains, a pyridoxal phosphate-dependent enzyme with mimosinase, cysteine-S-conjugate β-lyase and carbon-sulfur lyase activities. The gene is associated with transsulfuration, de novo L-methionine biosynthesis, selenium metabolism and stress responses. Its product localises to the chloroplast stroma and cytoplasm. BdCBL is associated with salinity and cold tolerance, as well as mRNA stability, histone methylation, wound response, sulfur metabolism and high temperature tolerance. Related genes in other species link the family to methionine accumulation, ethionine resistance, selenium tolerance and volatilisation, salt, cold, drought and osmotic stress tolerance, hypersensitive cell death, seed germination under stress, and root and embryo development. In cereals, the family has been associated with grain yield, seed protein and starch content, amino acid composition, bread loaf volume, stripe rust resistance, and agronomic and quality traits.