Summary
Six strains of fungi: two Aspergilli of the A. glaucus group, Penicillium sp. Trichoderma viride, and two unidentified dark fungi, were found able to use thiourea as a source of nitrogen. One of the Aspergilli and the Penicillium showed the best utilization, but the growth was always slow, and no more than 50% (usually much less) of the thiourea-nitrogen was recovered in the mycelium.
Assimilation of thiourea-nitrogen by Aspergillus and Penicillium was accompanied by oxidation of the sulphur to sulphate in roughly approximate stoichiometric proportion. The same fungi were able to produce sulphate from cystine as combined source of nitrogen and sulphur.
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Jensen, H.L. Biological transformation of thiourea. Archiv. Mikrobiol. 28, 145–152 (1957). https://doi.org/10.1007/BF00417165
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DOI: https://doi.org/10.1007/BF00417165