Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/27573
Type: Artigo de periódico
Title: Endophytic fungi from Myrcia guianensis at the Brazilian Amazon: distribution and bioactivity
Author: Banhos, Elissandro Fonseca dos
Souza, Antonia Queiroz Lima de
Andrade, Juliano Camurça de
Souza, Afonso Duarte Leão de
Koolen, Hector Henrique Ferreira
Albuquerque, Patrícia Melchionna
Abstract: Beneficial interactions between plants and microorganisms have been investigated under different ecological, physiological, biochemical, and genetic aspects. However, the systematic exploration of biomolecules with potential for biotechnological products from this interaction still is relatively scarce. Therefore, this study aimed the evaluation of the diversity and antimicrobial activity of the endophytic fungi obtained from roots, stems and leafs of Myrcia guianensis (Myrtaceae) from the Brazilian Amazon. 156 endophytic fungi were isolated and above 80% were identified by morphological examination as belonging to the genera Pestalotiopsis, Phomopsis, Aspergillus, Xylaria, Nectria, Penicillium and Fusarium. Fermented broth of those fungi were assayed for antimicrobial activity and four inhibited the growth of Staphylococcus aureus, Enterococcus faecalis, Candida albicans and Penicillium avellaneum. As the strain named MgRe2.2.3B (Nectria haematococca) had shown the most promising results against those pathogenic strains, its fermented broth was fractioned and only its two low polar fractions demonstrated to be active. Both fractions exhibited a minimum bactericidal concentration of 50 µg.mL-1 against S. aureus and a minimum fungicidal concentration of 100 µg.mL-1 against P. avellaneum. These results demonstrate the diversity of fungal genera in M. guianensis and the potential of these endophytic fungi for the production of new antibiotics.
Subject: secondary metabolites
fungus/plant interaction
antibiosis
Amazonian endophytic fungi
Editor: Sociedade Brasileira de Microbiologia
Rights: aberto
Identifier DOI: 10.1590/S1517-83822014005000027
Address: http://dx.doi.org/10.1590/S1517-83822014005000027
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822014000100021
Date Issue: 1-Jan-2014
Appears in Collections:Artigos e Materiais de Revistas Científicas - Unicamp

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