Oosporein is a dibenzoquinone fungal metabolite with antimicrobial and metal-chelating activities.
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Oosporein is a red dibenzoquinone secondary metabolite produced by fungi such as Beauveria, Chaetomium, and Phlebia species. Structurally characterized as a symmetric dibenzoquinone, it exhibits redox-active antimicrobial properties and contributes to fungal virulence in insects by modulating immune responses rather than acting as a direct toxin. Oosporein also functions as a metal chelator, promoting aluminum detoxification and enhancing plant growth under stress conditions. Its diverse biological activities make it a useful model for studying quinone-mediated redox biology, fungal pathogenicity, and metal stress responses.