Secondary metabolites, structure diagram: Trivial name – tryptoquivaline E

Date: 26 November 2013

Secondary metabolites, structure diagram: Trivial name – tryptoquivaline E

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Notes:

Species: A. fumigatusSystematic name: Spiro[furan-2(5H),9′-[9H]imidazo[1,2-a]indole]-3′,5(2’H)-dione, 1′,3,4,9’a-tetrahydro-1′-hydroxy-2′-methyl-4-(4-oxo-3(4H)-quinazolinyl)-, (2S,2’S,4R,9’aS)-Molecular formulae: C22H18N4O5Molecular weight: 418.402Chemical abstracts number: 61897-87-8Selected references: Yamazaki, Mikio; Fujimoto, Haruhiro; Okuyama, Emi (Res. Inst. Chemobiodynamics, Chiba Univ., Chiba, Japan). Tetrahedron Lett., (33), 2861-4 (English) 1976.SECONDARY METABOLITES MYCOTOXINS PRODUCED BY FUNGI COLONIZING CEREAL GRAIN IN STORAGE STRUCTURE AND PROPERTIES GOLINSKI P CHELKOWSKI, J. (ED.). DEVELOPMENTS IN FOOD SCIENCE, VOL. 26. CEREAL GRAIN: MYCOTOXINS, FUNGI AND QUALITY IN DRYING AND STORAGE. XXII+607P. ELSEVIER SCIENCE PUBLISHERS B.V.: AMSTERDAM, NETHERLANDS; (DIST. IN THE USA AND CANADA BY ELSEVIER SCIENCE PUBLISHING CO., INC.: NEW YORK, NEW YORK, USA). ILLUS. MAPS. ISBN 0-444-88554-4.; 0 (0). 1991. 355-403.


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  • A. versicolor by microscopy showing very long thin conidiophores.

    aspvers4

  • 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.

    aspvers3

  • 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

    aspvers2

  • 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

    A

  • Scanning electron micrograph photo of conidia. Scale bar: 1 µm.

    piperis F

  • Conidia-forming head and culture plate

    A

  • Cultures are grown on malt extract agar for 5-7 days at 30°C.
    Light microscopy-1000x stained with lacto-phenol and cotton blue.

    niger

  • 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.

    Aspergillus_chevalieri