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Type: Artigo de periódico
Title: Degradation of polycyclic aromatic hydrocarbons (2-7 rings) under microaerobic and very-low-oxygen conditions by soil fungi
Author: Silva, IS
Grossman, M
Durranta, LR
Abstract: Soil fungi were studied regarding their ability to degrade polycyclic aromatic hydrocarbons (PAHs) and produce ligninolytic enzymes under microaerobic and very-low-oxygen conditions. Several PAHs were used as substrates for soil fungi under microaerobic and very-low-oxygen conditions. Activities of lignin-peroxidase, manganese-peroxidase, and laccase were monitored over a 30-day period. PAH degradations were analyzed using C(18) reversed-phase HPLC. Low-molecular-weight PAHs (LMW-PAHs, 2-3 rings) were degraded most extensively by Aspergillus sp., Trichocladium canadense, and Fusarium oxysporum. When growing on high-molecular-weight PAHs (HMW-PAHS, 4-7 rings), the highest degradations were reached by T canadense, Aspergillus sp., Verticillium sp., and Achremonium sp. In this study, these fungi revealed a great capability to degrade a broad range of PAHs under low-oxygen conditions. In addition, lignolytic enzyme activities were observed during fungal growth on these compounds. These results suggest fungi have the ability to bioremediate PAH-contaminated soils and that they use these compounds as carbon sources for growth. (C) 2008 Elsevier Ltd. All rights reserved.
Subject: Polycyclic aromatic hydrocarbons (PAHs)
Soil fungi
Ligninolytic enzymes
Microaerobic condition
Country: Inglaterra
Editor: Elsevier Sci Ltd
Citation: International Biodeterioration & Biodegradation. Elsevier Sci Ltd, v. 63, n. 2, n. 224, n. 229, 2009.
Rights: fechado
Identifier DOI: 10.1016/j.ibiod.2008.09.008
Date Issue: 2009
Appears in Collections:Unicamp - Artigos e Outros Documentos

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