| | 2 | Author
| Klaus-MichaelW. Eltring, W. Olfgang Barz | Requires cookie* | | | Title
| Degradation of 3,9-Dimethoxypterocarpan and Medicarpin by Fusarium proliferatum  | | | | Abstract
| The degradation o f 3,9-dimethoxypterocarpan was investigated in selected strains of Fusarium. Fusarium proliferatum (/'. e. Gibberella fujikuroi (SAW)WR) degrades this substrate via 3-meth-oxy-9-hydroxypterocarpan, 3,9-dihydroxypterocarpan and 2',4',7-trihydroxyisoflavan. During degradation by this organism medicarpin is first demethylated to 3,9-dihydroxypterocarpan. | | | |
Reference
| Z. Naturforsch. 35c, 399—405 (1980); received March 10 1980 | | | |
Published
| 1980 | | | |
Keywords
| Phytoalexins, 3, 9-Dimethoxypterocarpan, Medicarpin, Fusarium, Degradation, Demethylation | | | |
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| | | | | TEI-XML for
| default:Reihe_C/35/ZNC-1980-35c-0399.pdf | | | | Identifier
| ZNC-1980-35c-0399 | | | | Volume
| 35 | |
| 4 | Author
| K.-M Weltring, K. Mackenbrock, W. Barz | Requires cookie* | | | Title
| Demethylation, Methylation and 3'-Hydroxylation of Isoflavones bv Fusarium Fungi | | | | Abstract
| Several introductionary reactions of isoflavone metabolism by Fusarium fungi are reported. Fu sarium avenaceum hydroxylates formononetin in the 3'-position yielding 3',7-dihydroxy-4'-me-thoxyisoflavone (calycosin). 3'-Hydroxylation o f biochanin A to 3/,5,7-trihydroxy-4/-methoxyiso-flavone (pratensein) has been observed with Fusarium oxysporum f. sp. lycopersici and Fusarium oxysporum f. sp. I ini. Depending on the growth medium Fusarium proliferatum metabolises for mononetin either by 7-O-methylation or by 4'-0-demethylation. | | | |
Reference
| Z. Naturforsch. 37c, 570—574 (1982); received March 29 1982 | | | |
Published
| 1982 | | | |
Keywords
| Isoflavones, Fusarium, Methylation, Demethylation, 3'-Hydroxylation, Metabolism | | | |
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| default:Reihe_C/37/ZNC-1982-37c-0570.pdf | | | | Identifier
| ZNC-1982-37c-0570 | | | | Volume
| 37 | |
| 5 | Author
| NigelC P Baldwin, BarrieW. Bycroft, PaulM. Dewick, John Gilbert, Ian Holden | Requires cookie* | | | Title
| Biosynthesis of Trichothecene My cotoxins in Fusarium culmorum Cultures | | | | Abstract
| A high yielding production of the trichothecene mycotoxin 3-acetyldeoxynivalenol (3-AcDON) in cultures of Fusarium culmorum is described. By supplying [14C]acetate, 14C-labelled 3-AcDON suitable for further metabolic studies has been obtained. The pattern of labelling has been ascertained by using 13C-labelled acetate precursors, and is in line with established biosynthetic data. A second trichothecene produced in significant amounts by F. culmorum has been identified as 3a, 15-diacetoxy-7a, 8a-dihydroxy-12, 13-epoxytrichothec-9-ene (7a, 8 a-dihydroxycalonec-trin). | | | |
Reference
| Z. Naturforsch. 40c, 514—518 (1985); received May 8 1985 | | | |
Published
| 1985 | | | |
Keywords
| Mycotoxin, Trichothecene, Fusarium, Biosynthesis, 3-Acetyldeoxynivalenol | | | |
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| default:Reihe_C/40/ZNC-1985-40c-0514.pdf | | | | Identifier
| ZNC-1985-40c-0514 | | | | Volume
| 40 | |
| 6 | Author
| NigelC P Baldwin, BarneW. Bycroft, PaulM. Dewick, John Gilbert | Requires cookie* | | | Title
| Metabolie Conversions of Trichothecene Mycotoxins: Biotransformation of 3-AcetyldeoxynivaIenoI into Fusarenon-X | | | | Abstract
| The trichothecene mycotoxin 3-acetyldeoxynivalenol was transformed by cultures of the diace-toxyscirpenol producer Fusarium sp. strain C37410-90 into four compounds, identified as deoxy-nivalenol, 15-acetyldeoxynivalenol, 3,15-diacetyldeoxynivalenol and fusarenon-X. The major transformations are the result of specific esterification and de-esterification processes, but the production of fusarenon-X involves in addition a novel 4ß-hydroxylation of the trichothecene ring system itself. | | | |
Reference
| Z. Naturforsch. 41c, 845 (1986); received April 21 1986 | | | |
Published
| 1986 | | | |
Keywords
| Mycotoxin, Trichothecene, Fusarium, Biotransformation, 3-Acetyldeoxynivalenol | | | |
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| default:Reihe_C/41/ZNC-1986-41c-0845.pdf | | | | Identifier
| ZNC-1986-41c-0845 | | | | Volume
| 41 | |
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