Plant secondary metabolite citral interferes with Phytophthora capsici virulence by manipulating the expression of effector genes.

ABSTRACT: Phytophthora capsici is a notorious pathogen that infects various economically important plants and causes serious threats to agriculture worldwide. Plants deploy a variety of plant secondary metabolites to fend off pathogen attacks, but the molecular mechanisms are largely unknown. In this study, we screened 11 plant secondary metabolites to evaluate their biofumigation effects against P. capsici, and found that citral, carvacrol, and trans-2-decenal exhibited strong antimicrobial effects. Intriguingly, a low concentration of citral was effective in restricting P. capsici infection in Nicotiana benthamiana, but it was unable to inhibit the mycelial growth. A high concentration of citral affected the mycelial growth and morphology, zoospore germination, and cell membrane permeability of P.

SUBMITTER: Song W 

PROVIDER: S-EPMC10346372 | biostudies-literature | 2023 Aug

REPOSITORIES: biostudies-literature