PJB-2024-151
Antimicrobial potential of endophytic Penicillium species and GC-MS metabolic profiling of Penicillium purpurogenum (EPEHS7)
Faizah Urooj
Abstract
Number of fungi that have been well-known as environmental contaminants like Penicillium species, are now being reported as endophytes. The endophytic Penicillium have been reported as induce systemic resistance agent by suppressing the root rotting fungi in host plants against environmental stresses. Endophytic Penicillium spp., that have revealed significant potential against root rot diseases of sunflower reported previously, were further assessed for antifungal, antibacterial and nematicidal activities. Solvent fractions of culture filtrates were found to cause significant activity against root rotting fungi Fusarium oxysporum, Rhizoctonia solani, Macrophomina phaseolina, and Fusarium solani, against common bacteria such as Escherichia coli, Bacillus subtilis, Salmonella typhimurium, Staphylococcus aureus, and root knot nematode Meloidogyne javanica in vitro. n-Hexane extract of culture filtrates of Penicillium was found more effective than chloroform soluble fraction. GC-MS profiling of n-hexane fraction of mycelium and culture filtrate of Penicillium purpurogenum (EPEHS7) shown the occurrence of variety of compounds, like hydrocarbon, tetradecanoic acid, ethyl ester, derivatives of benzene which may play role to improved crop quality. Endophytic Penicillium have potential against root-infecting fungi of tomato and can improve plant growth and yield. Endophytic Penicillium species can suppress root rotting fungi by direct mechanism or induction of systemic resistance in plants.
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