A facile in vivo procedure to analyze metabolic pathways in intact lichens

作者: Veronika Kuhn , Thomas Geisberger , Claudia Huber , Andreas Beck , Wolfgang Eisenreich

DOI: 10.1111/NPH.15968

关键词: PolyketideBiochemistryLichenUsnic acidBiosynthesisMetabolic pathwayThallusUsneaChemistryAmino acid

摘要: Lichen secondary metabolites show important biological activities as well pharmaceutical and chemotaxonomic potential. In order to utilize such substances of interest, detailed knowledge their biosynthetic pathways is essential. 13 CO2 -pulse/chase experiments using intact thalli the lichen Usnea dasopoga resulted in multiple C-labeled isotopologs amino acids, but not dibenzofuran derivative usnic acid - one best-studied metabolites, with considerable renewed interest for lifestyle applications. Spraying an aqueous solution [U-13 C6 ]glucose onto U. dasopoga afforded a specific mixture acid. One- two-dimensional NMR analysis crude extract corroborated polyketide pathway via methylphloroacetophenone phloroacetophenone. With exemplar, we provide proof-of-principle that can be used general study metabolic fluxes lichens.

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