Neuhof, Torsten and Berg, Albrecht and Besl, Helmut and Schwecke, Torsten and Dieckmann, Ralf and von Doehren, Hans (2007) Peptaibol production by Sepedonium strains parasitizing Boletales. CHEMISTRY & BIODIVERSITY, 4 (6). pp. 1103-1115. ISSN 1612-1872, 1612-1880
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Fungi of the genus Sepedonium (anamorphic ascomycetes) are known to infect fruiting bodies of Basidiomycetes of the order Boletales. We have characterized twelve Sepedonium isolates by intact-cell mass spectrometry (IC-MS) with the help of respective biomarkers and their metabolite spectra focusing on peptaibol production. A strain of mycoparasitic S. chalcipori was grown in solid-state fermentation, and tylopeptin production was found, suggesting an ascomycete origin of these peptaibols, which were first described in the basidiomycete Tylopilus neofelleus. In addition, the structures of two new peptaibols, chalciporin A (=Ac-Trp-Val-Aib-Val-Ala-Gln-Ala-Aib-Ser-Leu-Ala-Leu-Aib-Gin-Leuol) and chalciporin B (=Ac-Trp-Val-Aib-Val-Ala-Gln-Ala-Aib-Gln-Aib-Ala-Leu-Aib-Gln-Leuol) are presented. The IC-MS technique was applied for in situ peptaibol analysis of Sepedonium strains growing on Boletales, in particular S. chrysospermum infecting Xerocomus cf. badius. We found chrysospermins at the surface and within basidiomycete tissue, as well as in the cultivated parasite.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | ASSISTED-LASER-DESORPTION/IONIZATION; FLIGHT MASS-SPECTROMETRY; RAPID IDENTIFICATION; ANTIBIOTICS; FUNGI; MALDI; PEPTAIBIOTICS; SPORES; AMPULLOSPORUM; PEPTIDES; |
| Subjects: | 500 Science > 580 Botanical sciences |
| Divisions: | Biology, Preclinical Medicine > Institut für Pflanzenwissenschaften |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 11 Jan 2021 11:35 |
| Last Modified: | 11 Jan 2021 11:35 |
| URI: | https://pred.uni-regensburg.de/id/eprint/33370 |
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