UGT74B5-mediated glucosylation at <i>ortho</i> hydroxyl groups of benzoic acid derivatives regulating plant immunity to anthracnose in tea plants.

ABSTRACT: Benzoates, particularly salicylic acid (SA) and its derivatives, play critical roles in plant immune responses and basal defense through hydroxylation and glycosylation. Anthracnose is one of the most common and devastating diseases in tea plants (Camellia sinensis). However, the role of SA and its derivatives in tea plant immunity and resistance to anthracnose remains largely unexplored. In the present study, we identified and characterized a glycosyltransferase, CsUGT74B5, which was significantly downregulated in tea seedlings upon anthracnose infection. CsUGT74B5 was preferentially expressed in mature leaves and stem, and responded rapidly to exogenous SA treatment. Phylogenetic analysis suggested CsUGT74B5 might possess the catalytic activity toward benzoates. Enzymatic a

SUBMITTER: Li C 

PROVIDER: S-EPMC11908824 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature