Screening for fungi intensively mineralizing 2,4,6-trinitrotoluene |
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| Authors: | K Scheibner M Hofrichter A Herre J Michels W Fritsche |
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| Institution: | Friedrich Schiller Universit?t Jena, Institut für Mikrobiologie, Lehrstuhl Technische Mikrobiologie, Philosophenweg 12, D-07743 Jena, Germany Fax: +49-3641-6 31237 e-mail: scheibner@merlin.biologie.uni-jena.de, DE
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| Abstract: | Within a screening program, 91 fungal strains belonging to 32 genera of different ecological and taxonomic groups (wood-
and litter-decaying basidiomycetes, saprophytic micromycetes) were tested for their ability to metabolize and mineralize 2,4,6-trinitrotoluene
(TNT). All these strains metabolized TNT rapidly by forming monoaminodinitrotoluenes (AmDNT). Micromycetes produced higher
amounts of AmDNT than did wood- and litter-decaying basidiomycetes. A significant mineralization of 14C]TNT was only observed for certain wood- and litter-decaying basidiomycetes. The most active strains, Clitocybula dusenii TMb12 and Stropharia rugosa-annulata DSM11372 mineralized 42 % and 36 % respectively of the initial added 14C]TNT (100 μM corresponding to 4.75 μCi/l) to 14CO2 within 64 days. Micromycetes (deuteromycetes, ascomycetes, zygomycetes) proved to be unable to mineralize 14C]TNT significantly.
Received: 8 August 1996 / Received revision: 16 December 1996 / Accepted: 20 December 1996 |
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