Genetic analysis demonstrates melanin production in Cryptococcus neoformans strains, suggesting potential for antibiotic production.
Introduction: Cryptococcus neoformans is a fungus known to be a human pathogen that infects immunocompromised individuals. In this study, melanin, a secondary metabolite, was highlighted as a product of this fungus. Methodology: Two strains (NB7 and USE5) were selected from 20 melanin-producing and non-melanin producing strains, respectively, for pigment production analysis. After initial subculturing using a single colony, the colour of the normal growth culture was established. The cultures were stored under various conditions for proper monitoring of any visible metabolic activity. Results: Pigmentation was observed in the melanin-producing strain (Nb7). The production of these secondary metabolites (pigments) was consistent throughout the subculturing period for segregation analysis. Conclusion: Secondary metabolite production is genetically controlled, and the possibility of antibiotic production is discussed.
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Lugard Eboigbe (2025) studied this question.
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