I14H — Brachypodium distachyon

Summary

BdI14H (BRADI_1G33320V3) on chromosome 1 of Brachypodium distachyon encodes a glycosyltransferase with xylosyltransferase, 1,4-beta-D-xylan synthase, and galactosylgalactosylxylosylprotein 3-beta-glucuronosyltransferase activities, belonging to the Glyco_trans_43 and nucleotide-diphossugar_trans families. The gene is associated with xylan and glucuronoxylan anabolism, secondary cell wall biogenesis, vascular tissue pattern formation, shoot development, and cell wall organization. It is linked to seed mucilage architecture, mucilage adherence, and severe seed mucilage detachment with a xylan-deficient phenotype, as well as cellulose distribution, xylan acetylation, and secondary cell wall thickening. The encoded protein localizes to the Golgi membrane, trans-Golgi network, and endosome. Related genes in other species are linked to xylan biosynthesis and seed mucilage defects, and sequence similarity connects the family to stem strength, lignin and cellulose content, and drought tolerance.