Date: 26 November 2013
Secondary metabolites, structure diagram: Trivial name – Gregatin A
Copyright: n/a
Notes:
Species: A. panamensisSystematic name: 3(2H)-Furanone, 2-(1E,3E)-1,3-hexadienyl-5-methoxy-2-methyl-4-[(2E)-1-oxo-2-butenyl]-, (-)-Molecular formulae: C16H20O4Molecular weight: 276Chemical abstracts number: 65794-79-8Selected references: Anke, H.; Schwab, H.; Achenbach, H. Metabolic products of microorganisms. 197. Investigations on metabolites of microorganisms. 23. Tetronic acid derivatives from Aspergillus panamensis. Production, isolation, characterization and biological activity. Journal of Antibiotics (1980), 33(9), 931-9.
Images library
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Title
Legend
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Pigmentation of Aspergillus versicolor colonies ranged from pale green to greenish-beige, pink-green, dark green and brown. Reverse is usually reddish. The growth rate is usually slow. Cultured on Sabouraud dextrose agar with chloramphenicol.
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A Colonies on MEA after one week; B, C conidial heads with tip of conidiophire, x920; D conidial head, x 2330; E conidial heads x920
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A Colonies on MEA + 20% sucrose after one week; B detail of colony showing columnar conidial heads x 44 ; C conidial heads x 920; D conidia x2330
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Cultures are grown on malt extract agar for 5-7 days at 30°C.
Light microscopy-1000x stained with lacto-phenol and cotton blue.
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A Colonies on MEA +20% sucrose after one week; B ascomata x 40; C conidiophores x 920; D ascospores x2330; E ascoma x 230; F portion of ascoma with asci and ascospores, x 920.
