Fungos endofíticos de Piper Peltatum e Peperomia Pellucida: caracterização metabólitos secundários e atividades biológicas

Abstract

A total of 282 endophytic fungi were collected from these two plants, which were classified into 19 groups according to their morphological characteristics. Of these groups, 12 had their genus identified (Penicillium, Fusarium, Colletotrichum, Guignardia, Phomopsis, Cephalosporium, Bionectria, Xylaria, Aspergillus, Lirula, Pestalotiopsis and Trichoderma). Five strains (Penicillium, Fusarium, Cephalosporium, and two Xylaria) were selected for large-scale culture, whose extracts were fractionated. Fiveisolatedsubstanceswereidentified(austdiol19-20epoxycytochalasin Q, cytochalasin D, 7-decloro griseofulvin and 5-methoxycarbonyl-melein), one of which – austdiol – was produced in large quantities by a fungus of the Fusarium genus, which is the first report of this substance being produced by a fungus of the Hypocreales class. The endophytic fungi proved be a good source of substances with biological activity.