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Provedor de dados:  BJM
País:  Brazil
Título:  Antifungal and proteolytic activities of endophytic fungi isolated from Piper hispidum Sw
Autores:  Orlandelli,Ravely Casarotti
Almeida,Tiago Tognolli de
Alberto,Raiani Nascimento
Polonio,Julio Cesar
Azevedo,João Lúcio
Pamphile,João Alencar
Data:  2015-06-01
Ano:  2015
Palavras-chave:  Antagonism
Competitive interaction
Dual culture
Cup plate
Resumo:  Endophytes are being considered for use in biological control, and the enzymes they secrete might facilitate their initial colonization of internal plant tissues and direct interactions with microbial pathogens. Microbial proteases are also biotechnologically important products employed in bioremediation processes, cosmetics, and the pharmaceutical, photographic and food industries. In the present study, we evaluated antagonism and competitive interactions between 98 fungal endophytes and Alternaria alternata, Colletotrichum sp., Phyllosticta citricarpa and Moniliophthora perniciosa. We also examined the proteolytic activities of endophytes grown in liquid medium and conducted cup plate assays. The results showed that certain strains in the assemblage of P. hispidum endophytes are important sources of antifungal properties, primarily Lasiodiplodia theobromae JF766989, which reduced phytopathogen growth by approximately 54 to 65%. We detected 28 endophytes producing enzymatic halos of up to 16.40 mm in diameter. The results obtained in the present study highlight the proteolytic activity of the endophytes Phoma herbarum JF766995 and Schizophyllum commune JF766994, which presented the highest enzymatic halo diameters under at least one culture condition tested. The increased activities of certain isolates in the presence of rice or soy flour as a substrate (with halos up to 17.67 mm in diameter) suggests that these endophytes have the potential to produce enzymes using agricultural wastes.
Tipo:  Info:eu-repo/semantics/article
Idioma:  Inglês
Editor:  Sociedade Brasileira de Microbiologia
Relação:  10.1590/S1517-838246220131042
Formato:  text/html
Fonte:  Brazilian Journal of Microbiology v.46 n.2 2015
Direitos:  info:eu-repo/semantics/openAccess

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