Protection of naringenin chalcone by a pathogenesis-related 10 protein promotes flavonoid biosynthesis in Marchantia polymorpha.

ABSTRACT: Pathogenesis-related (PR) proteins are diverse stress- or pathogen-induced proteins. Some are associated with specialised metabolism, including proposed functions for anthocyanin biosynthesis. However, data are limited to a few angiosperm species, and the mode(s) of action are uncertain. Using the liverwort Marchantia polymorpha (Marchantia), we examined whether pathogenesis-related 10 (PR10) contributes to flavonoid biosynthesis in other land plant lineages and investigated its mode of action. Marchantia produces two major flavonoid types: flavones and the pigment auronidin. MpPR10.5 is a target of the auronidin regulator MpMYB14; therefore, Mppr10.5 mutants were generated using CRISPR/Cas9 and analysed for transcript abundance (via RNA sequencing) and for metabolite content. Recombinant

SUBMITTER: Zhou Y 

PROVIDER: S-EPMC12138178 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature