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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

A Mixed Culture of Endophytic Fungi Increases Production of Antifungal Polyketides

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Chagas, Fernanda O. [1] ; Dias, Luis G. [2] ; Pupo, Monica T. [1]
Total Authors: 3
[1] Univ Sao Paulo, Fac Ciencias Farmaceut Ribeirao Preto, BR-14040903 Ribeirao Preto, SP - Brazil
[2] Univ Sao Paulo, Fac Filosofia Ciencias & Letras Ribeirao Preto, BR-14040901 Ribeirao Preto, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: Journal of Chemical Ecology; v. 39, n. 10, p. 1335-1342, OCT 2013.
Web of Science Citations: 22

Secondary metabolites produced by endophytic microorganisms can provide benefits to host plants, such as stimulating growth and enhancing the plant's resistance toward biotic and abiotic factors. During its life, a host plant may be inhabited by many species of endophytes within a restrictive environment. This condition can stimulate secondary metabolite production that improves microbial competition and may consequently affect both the neighboring microorganisms and the host plant. The interactions between the endophytes that co-habit the same host plant have been studied. However, the effect of these interactions on the host plant has remained neglected. When using mixed microbial cultures, we found that the endophytic fungus Alternaria tenuissima significantly increased the production of some polyketides, including antifungal stemphyperylenol in response to the endophytic Nigrospora sphaerica. Biological activity assays revealed that stemphyperylenol can cause cytotoxic effects against N. sphaerica, although no phytotoxicity was observed in the host plant Smallanthus sonchifolius, even at concentrations much higher than those toxic to the fungus. The polyketides produced by A. tenuissima may be important for the ecological relationships between endophyte-endophyte and endophytes-host plants in the natural environment. (AU)

FAPESP's process: 09/17695-6 - New strategies to access microbial natural products: mixed cultures of endophytes, chemical and epigenetic remodeling of biosynthetic pathways
Grantee:Fernanda Oliveira das Chagas
Support type: Scholarships in Brazil - Doctorate
FAPESP's process: 13/07600-3 - CIBFar - Center for Innovation in Biodiversity and Drug Discovery
Grantee:Glaucius Oliva
Support type: Research Grants - Research, Innovation and Dissemination Centers - RIDC
FAPESP's process: 08/09540-0 - New strategies in the search of natural antibiotics: symbiotic microorganisms as sources of compounds and in vivo assay based on Caenorhabditis elegans infection model
Grantee:Mônica Tallarico Pupo
Support type: Regular Research Grants
FAPESP's process: 07/06057-3 - Mixed cultures as a strategy to improve endophytic fungi metabolite diversity
Grantee:Fernanda Oliveira das Chagas
Support type: Scholarships in Brazil - Master