INVESTIGADORES
CABRERA Gabriela Myriam
artículos
Título:
Metabolites from the dark septate endophyte Drechslera sp . Evaluation by LC/MS and principal component analysis of culture extracts with histone deacetylase inhibitors
Autor/es:
SILESS, GASTÓN; GALLARDO, GABRIELA L; RODRIGUEZ, M ALEJANDRA; RINCÓN, YULIET A; GODEAS, ALICIA M; CABRERA, GABRIELA M.
Revista:
Chemistry and Biodiversity
Editorial:
WILEY-V C H VERLAG GMBH
Referencias:
Año: 2018
ISSN:
1612-1872
Resumen:
Secondary metabolites from the cultures of the dark septate fungal endophyte (DSE) Drechslera sp., isolated from the roots of rye grass (Lollium sp.) and cultured under different experimental conditions, are described here for the first time. The use of suberoylanilide hydroxamic acid (SAHA) and other histone deacetylase inhibitors as epigenetic modifiers in the culture medium was evaluated by LC/MS and LC/MS/MS. Several differences in the metabolite production were detected by means of supervised principal component analysis (PCA) of LC/MS data. The presence of the compounds in the culture medium or in the mycelium was compared.The structure of many of the metabolites was confirmed by isolation from a larger scale culture. These metabolites were characterized as prenylhydroxybenzoic acids and chromans, two compounds, one of each class were previously undescribed, prenylquinoids, diketopiperazines and macrosphelides. Some of the compounds which were released to the medium showed good antifungal activity, suggesting that these compounds could protect Lollium from fungal phytopatogens.The use of SAHA as an additive of the cultures also induced the release of hexosylphytosphyngosine to the culture medium. The biotransformation of the inhibitors was observed in addition to the production of antifungal metabolites, showing the ability of this endophytic strain to control xenobiotics.