Neopestalotiopsis species presenting wide dye destaining activity: report of a mycelium-associated laccase.

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ID: 25950
2019
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Abstract
Wastewaters from textile dyeing industries represent an ecological concern, notably due to the known toxicity of azo dyes to the local microbiome and human health. Although physicochemical approaches are the rule for the treatment of industrial effluents, biological strategies such as enzyme-mediated dye destaining is a promising alternative. Notwithstanding a broad range of microorganisms, including fungi, algae, yeast, and bacteria, display dye-destaining properties, most of the literature has focused in ligninolytic fungi, leaving other classes of organisms somehow ignored. In this study, six endophytic strains isolated from Maytenus ilicifolia were studied for their destaining activity. The phylogenetic and morphological analysis allowed the identification of strain LGMF1504 as Neopestalotiopsis sp. LGMF1504 that decolorized several commercial dyes as the result of a mycelium-associated laccase. The enzyme expression was modulated by carbon and nitrogen content in the culture medium, it was weakly affected by the presence of aromatic compounds and metal ions while some common laccase mediators improved the destaining activity onto dye substrates. The best culture condition observed for laccase activity was a basic culture medium containing 5 g L starch and 15 g L ammonium tartrate. The laccase activity showed low substrate specificity and almost unaltered performance in a wide range of pH values and NaCl concentrations, suggesting the potential of Neopestalotiopsis sp. LGMF1504 for biodegradation approaches.
Reference Key
marzallpereira2019neopestalotiopsismicrobiological Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Marzall-Pereira, Miriam;Savi, Daiani Cristina;Bruscato, Elisandro Cesar;Niebisch, Carolina Heyse;Paba, Jaime;Aluízio, Rodrigo;Ferreira-Maba, Lisandra Santos;Galli-Terasawa, Lygia Vitoria;Glienke, Chirlei;Kava, Vanessa;
Journal microbiological research
Year 2019
DOI
S0944-5013(19)30317-9
URL
Keywords Keywords not found

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