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Molecules 2011, 16(3), 2486-2500; doi:10.3390/molecules16032486
Article

Role of the Morphology and Polyphosphate in Trichoderma harzianum Related to Cadmium Removal

1,2, 2,3, 2,4, 2,5, 2, 2,*  and 2
1 Master Course in Development of Environmental Processes, Catholic University of Pernambuco, Recife, PE, Brazil 2 Nucleus of Research in Environmental Sciences, Catholic University of Pernambuco, 50.050-590 Recife, PE, Brazil 3 Maurício de Nassau Faculty, Recife, PE, Brazil 4 Biology Department, Federal Rural University of Pernambuco, Recife, PE, Brazil 5 PNPD-CAPES, Catholic University of Pernambuco, Recife, PE, Brazil
* Author to whom correspondence should be addressed.
Received: 14 January 2011 / Revised: 2 March 2011 / Accepted: 4 March 2011 / Published: 15 March 2011
(This article belongs to the Section Metabolites)
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Abstract

This study concerns the metabolism of polyphosphate in Trichoderma harzianum, a biocontrol agent with innate resistance against most chemicals used in agriculture, including metals, when grown in the presence of different concentrations of cadmium. The biomass production was affected by the concentration of metal used. Control cultures were able to accumulate polyphosphate under the conditions used. Moreover, the presence of cadmium induced a reduction in polyphosphate content related to the concentration used. The morphological/ultrastructural aspects were characterized by using optical and scanning electron microscopy, and were affected by the heavy metal presence and concentration. The efficiency of cadmium removal revealed the potential of the microorganism for use in remediation. The data indicate the potential for polyphosphate accumulation by the fungus, as well as its degradation related to tolerance/survival in the presence of cadmium ions.
Keywords: polyphosphate; Trichoderma harzianum; cadmium; morphology; ultrastructure polyphosphate; Trichoderma harzianum; cadmium; morphology; ultrastructure
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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De Freitas Lima, A.; Ferreira de Moura, G.; Barbosa de Lima, M.A.; Mendes de Souza, P.; Alves da Silva, C.A.; De Campos Takaki, G.M.; Do Nascimento, A.E. Role of the Morphology and Polyphosphate in Trichoderma harzianum Related to Cadmium Removal. Molecules 2011, 16, 2486-2500.

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