Abstract
Chrysosporium queenslandicum, Graphium penicilloideus andScopulariopsis brevicaulis were grown on various supplemented basal salts media to compare keratinase induction, activity and repression. All three fungi can utilize keratin as a sole source of carbon, nitrogen and sulfur. Total keratinase activity inC. queenslandicum andS. brevicaulis, was not repressed by supplementation of keratin-containing medium with glucose, ammonium or sulfate. The production of keratinase activity was not derepressible in keratin-free media. Keratin utilization commenced before the detection of significant extracellular keratinase activity which was always associated with mycelial growth.
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Malviya, H.K., Rajak, R.C. & Hasija, S.K. Synthesis and regulation of extracellular keratinase in three fungi isolated from the grounds of a gelatin factory, Jabalpur, India. Mycopathologia 120, 1–4 (1992). https://doi.org/10.1007/BF00578494
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DOI: https://doi.org/10.1007/BF00578494