| Título: | Degradation of Aromatic Hydrocarbons by White-Rot Fungi in a Historically Contaminated Soil |
| Autores: | D'ANNIBALE, ALESSANDRO, Autor ; Marika Ricci, Autor ; Vanessa Leonardi, Autor ; Daniele Quaratino, Autor ; Enrico Mincione, Autor ; Maurizio Petruccioli, Autor |
| Tipo de documento: | texto impreso |
| ISBN/ISSN/DL: | 68155 |
| Dimensiones: | pp. 724-731 |
| Nota general: | En: Wiley Periodicals, 2005, 724-731 |
| Langues: | Inglés |
| Clasificación: | |
| Resumen: |
Phanerochaete chrysosporiumNRRL 6361 and Pleurotus pulmonariusCBS664.97were tested for their ability
to grow under nonsterile conditions and to degrade various aromatic hydrocarbons in an aged contaminated soil that also contained high concentrations of heavy metals. After 24 days fungal incubation, carbon-CO2 liberated, an indicator of microbial activity, reached a plateau. At the end of the incubation time (30 days), fungal colonization was clearly visible and was confirmed by ergosterol and cell organic carbondeterminations. InspiteofunfavorablepH(around 7.4) and the presence of heavy metals, both fungi produced Mn-peroxidase activity. In contrast, laccase and aryl-alcohol oxidase were detected only in the soil treated with P. pulmonariusCBS 664.97 and lignin-perox-idase in that with P. chrysosporiumNRRL 6361. No lignin-modifying enzyme activities were present in non-inocu-lated soil incubated for 30 days (control microcosm). Regardless of the fungus employed, a total removal of naphtalene, tetrachlorobenzene, and dichloroaniline iso-mers, diphenylether andN-phenyl-1-naphtalenamine,was observed. Significant release of chloride ions was also observed in fungal-treated soil, in comparison with that recorded in thecontrolmicrocosm. Both fungi led toa significant decrease in soil toxicity, as assessedusing two different soil contact assays, including the Lepidium sativumL. germination test and the Collembolamortality test. ?2005 Wiley Periodicals, Inc |
