Screening of Colletotrichum isolates from the Amazon biodiversity as producers of laccases using a simple methodology

Authors

  • Gilmara Carvalho Martinez Universidade Estadual de Londrina
  • Ellen Cristine Giese Universidade Estadual de Londrina
  • José Odair Pereira Universidade Federal do Amazonas
  • Robert F. H. Dekker Universidade Estadual de Londrina
  • Aneli de Melo Barbosa Universidade Estadual de Londrina

DOI:

https://doi.org/10.5433/1679-0359.2009v30n2p397

Keywords:

Colletotrichum, Laccases, Amazon biodiversity.

Abstract

This work presents a simple and rapid technique to select fungal strains with the ability to produce laccases. Fifteen strains of Colletotrichum spp. from the Amazon region (isolated from cumarú, puerária, cupuaçu and weed plants), as well as a strain isolated from “espinheira santa” in the south of Brazil, were found to produce laccases. Laccase activity was assayed using ABTS and DMP as putative substrates. Only Colletotrichum isolates of puero (P2 and P3) did not present activity towards DMP. Isolates D3 (weed plants), M3 (espinheira santa), C2 and C3 (cumarú) were selected, and were compared with the basidiomycete Pleurotus ostreatus used as a reference laccase producer under stationary and submerged culture conditions. Highest laccase activity was detected only in the stationary cultures of Colletotrichum isolate D3 assayed against ABTS (35 U/l) and DMP (8 U/l).

Author Biographies

Gilmara Carvalho Martinez, Universidade Estadual de Londrina

Especialista em Bioquímica Aplicada, Depto de Bioquímica e Biotecnologia, CCE, UEL, Londrina, PR.

Ellen Cristine Giese, Universidade Estadual de Londrina

Mestre em Biotecnologia, Depto de Bioquímica e Biotecnologia, CCE, UEL, Londrina, PR.

José Odair Pereira, Universidade Federal do Amazonas

Docente da Faculdade de Ciências Agrárias, UFAM, Manaus, AM.

Robert F. H. Dekker, Universidade Estadual de Londrina

CNPq-Professor Visitante do Departamento de Bioquímica e Biotecnologia, CCE, UEL, Londrina, PR.

Aneli de Melo Barbosa, Universidade Estadual de Londrina

Docente do Departamento de Bioquímica e Biotecnologia, CCE, UEL, Londrina, PR.

Published

2009-07-21

How to Cite

Martinez, G. C., Giese, E. C., Pereira, J. O., Dekker, R. F. H., & Barbosa, A. de M. (2009). Screening of Colletotrichum isolates from the Amazon biodiversity as producers of laccases using a simple methodology. Semina: Ciências Agrárias, 30(2), 397–406. https://doi.org/10.5433/1679-0359.2009v30n2p397

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