Abstract
A RATHER unusual strain of P. frequentans has been found abundantly in acid heath soils; we are indebted to Dr. K. B. Raper (United States Department of Agriculture) for identification of this mould. It differs from typical strains of the species in that it develops extensive white sterile mycelia on Czapek agar and causes some ropiness on malt agar. The reverse of colonies on Czapek agar is less highly coloured than that of strains from which the yellow pigment citromycetin has been isolated; we have had no indication that the strains discussed here produce citromycetin; but they do produce an anti-fungal and weakly antibacterial substance which we propose to call ‘frequentin’.
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References
Brian, P. W., and Grove, J. F. (unpublished work).
Birkinshaw, J. H., and Raistrick, H., Biochem. J., 30, 801 (1936).
Raudnitz, H., and Puluj, G., Ber. dtsch. chem. Ges., 64, 2214 (1931).
Brian, P. W., and Hemming, H. G., Ann. App. Biol., 32, 214 (1945).
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CURTIS, P., HEMMING, H. & SMITH, W. Frequentin: an Antibiotic produced by some Strains of Penicillium frequentans Westling. Nature 167, 557–558 (1951). https://doi.org/10.1038/167557a0
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DOI: https://doi.org/10.1038/167557a0
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