Two pathogen-inducible UDP-glycosyltransferases, UGT73C3 and UGT73C4, catalyze the glycosylation of pinoresinol to promote plant immunity in Arabidopsis.

ABSTRACT: UDP-glycosyltransferases (UGTs) constitute the largest glycosyltransferase family in the plant kingdom, regulating many metabolic processes by transferring sugar moieties onto various small molecules. However, their physiological significance in plants remains largely unknown. Here, we reveal the functions and mechanisms of two Arabidopsis UGT genes, UGT73C3 and UGT73C4, which are strongly induced by Pseudomonas syringae pv. tomato (Pst) DC3000. Overexpression of these genes significantly enhanced plant immune response, whereas their loss of function in double mutants led to increased sensitivity to pathogen infections. However, single mutants showed no obvious alteration in pathogen resistance. To further investigate the regulatory mechanisms of UGT73C3/C4 in plant immunity, we conducted

SUBMITTER: Zhao S 

PROVIDER: S-EPMC12010377 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature