作者: Veronika Kuhn , Thomas Geisberger , Claudia Huber , Andreas Beck , Wolfgang Eisenreich
DOI: 10.1111/NPH.15968
关键词: Polyketide 、 Biochemistry 、 Lichen 、 Usnic acid 、 Biosynthesis 、 Metabolic pathway 、 Thallus 、 Usnea 、 Chemistry 、 Amino 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.