Archives of Microbiology

, Volume 133, Issue 3, pp 236–238

Development of Aspergillus parasiticus and formation of aflatoxin B1 under the influence of conidiogenesis affecting compounds

  • Jürgen Reiß
Original Papers

DOI: 10.1007/BF00415008

Cite this article as:
Reiß, J. Arch. Microbiol. (1982) 133: 236. doi:10.1007/BF00415008


The influence of various inhibitors of hyphal growth, sporulation and biosynthesis of aflatoxin B1 in Aspergillus parasiticus NRRL 2999 was studied. 6-Thioguanine, dl-ethionine, fluoroacetic acid and phenylboric acid, inhibitors of maturation of fungal conidiophores and of conidiogenesis, were added at various concentrations to malt extract agar. Lower concentrations of 6-thioguanine and dl-ethionine did not inhibit the growth of hyphae and the sporulation. Phenylboric acid reduced conidiogenesis more than hyphal growth. The yields of aflatoxin B1 were significantly reduced. Additions of fluoroacetic acid did not greatly affect the growth of hyphae but totally inhibited the production of conidia and concurrently significantly reduced the formation of aflatoxin B1. An interrelation between conidiogenesis and onset of secondary metabolism in A. parasiticus is evident.

Key words

Aflatoxin B1 Aspergillus parasiticus Conidiogenesis dl-Ethionine Fluoroacetic acid Phenylboric acid 6-Thioguanine 

Copyright information

© Springer-Verlag 1982

Authors and Affiliations

  • Jürgen Reiß
    • 1
  1. 1.Mikrobiologisches LaboratoriumGrahamhaus Studt KGBad KreuznachFederal Republic of Germany

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