Identificação de fungos isolados da amazônia produtores de metabólitos secundários

Abstract

The Brazilian Amazon has a lot to be explored and known for all groups of living beings. Among these, microbial biodiversity needs a different look to get to know each other and discover useful applicability to society, such as phytohormones and antimicrobials. The study sought to identify secondary metabolites produced by fungi, being 20 of aquatic origin and 20 endophytic. To carry out the phytohormonal test were American lettuce (Lactuca sativa L.) and mallow (Urena lobata L.) seeds were used, and for For antimicrobial activity, Enterococcus faecalis and Candida albicans strains were tested. In the identification of these fungi, macro and micromorphological analyzes were carried out, and and the data obtained were compared with the literature. Of the 40 fungi studied, 23 presented results in the phytohormonal test, being 03 aquatic and 20 endophytic. On test antimicrobial, 9 showed results, being 03 aquatic and 06 endophytic. The fungi of Trichoderma genus had better results as phytohormone producers, being T. harzianum the best performer. Those of the genus Penicillium were effective in the test antimicrobial against Enterococcus faecalis and Candida albicans pathogens, both species of P. oxalicum had better antimicrobial activity. It emphasizes the importance regarding the need for more in-depth studies that expand sampling and chemical identification of these substances already detected, or for the production of substances for plant growth or the discovery of a new substance for use in dentistry. Keywords: Endophytic Fungus, Aquatic Fungus, Phytohormone, Antimicrobial.