1. Bioprospecting highly diverse endophytic Pestalotiopsis spp. with antibacterial properties from Maytenus ilicifolia, a medicinal plant from Brazil.
- Author
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Gomes-Figueiredo J, Pimentel IC, Vicente VA, Pie MR, Kava-Cordeiro V, Galli-Terasawa L, Pereira JO, de Souza AQ, and Glienke C
- Subjects
- Anti-Bacterial Agents pharmacology, Bacteria growth & development, Bayes Theorem, Brazil, Chromatography, Thin Layer, DNA, Fungal analysis, DNA, Ribosomal Spacer analysis, Microbial Sensitivity Tests methods, Molecular Sequence Data, Mycological Typing Techniques, Phylogeny, Random Amplified Polymorphic DNA Technique, Sequence Analysis, DNA, Xylariales growth & development, Antibiosis, Maytenus microbiology, Plants, Medicinal microbiology, Xylariales classification, Xylariales isolation & purification
- Abstract
Thirteen endophytic fungal strains of the genus Pestalotiopsis were isolated from the medicinal plant Maytenus ilicifolia Mart. ex. Reiss (commonly known as "espinheira santa") and their antimicrobial properties were investigated. Two isolates were successful in inhibiting the growth of the tested microorganisms (Escherichia coli, Klebsiella pneumoniae, Micrococcus luteus, Staphylococcus aureus, and methicillin-resistant Staphylococcus aureus (MRSA)) using the technique of bioautographic thin-layer chromatography (TLC) agar overlay assay. An analysis based on a polyphasic approach integrating taxonomic information, morphological traits, RAPD markers, and the sequencing of the ITS1-5.8S-ITS2 of the rDNA led to the assignment of the isolates as belonging to the species Pestalotiopsis microspora, Pestalotiopsis vismiae, and Pestalotiopsis leucothoes. Therefore, the present study presents a new approach to the study of endophytic fungi of the genus Pestalotiopsis.
- Published
- 2007
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