Studies in the biochemistry of micro-organisms. 77. A survey of fungal metabolism of inorganic sulphates

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Abstract
A survey was made of the utilization of inorganic sulfate by 115 spp. or strains of molds, grown on Czapek-Dox glucose soln. containing Mg and ferrous sulfates as the sole source of S. This demonstrated the universal importance of inorganic sulfates in the metabolism of molds, since all spp. or strains tested utilized 10% or more, 56 utilized 60% or more, and 16 over 90% of the inorganic sulfate in the medium. A more detailed examination of the S-metabolism of 7 spp. of Penicillium, 6 strains of Aspergillus terreus, and 1 strain of A. fumigatus, grown on the same medium, revealed that some of them form considerable amts. of "ethereal sulfates" while others, particularly P. notatum, give large yields of other, probably organic, S compounds of at present unknown nature.

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