Remediation of a Mercury-Contaminated Site in Egypt

Meschede, Thomas; Vogelsberger, Raimund

doi:10.1007/978-94-011-0415-9_54

Cited by 3 publications

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“…The ligninolytic system of P. ostreatus consists of laccase and MnP (62), and therefore the activity of these two enzymes was estimated. Cadmium and mercury were chosen because they are often found as soil contaminants (43) and are most toxic for white-rot fungi in liquid culture (3). Furthermore, both Cd and Hg are nonessential metals that differ in the proposed mechanism of toxicity.…”

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Influence of Cadmium and Mercury on Activities of Ligninolytic Enzymes and Degradation of Polycyclic Aromatic Hydrocarbons by Pleurotus ostreatus in Soil

Baldrián

Wiesche²,

Gabriel

et al. 2000

Appl Environ Microbiol

199

110

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The white-rot fungus Pleurotus ostreatus was able to degrade the polycyclic aromatic hydrocarbons ( anthracene (41%), the fungus enhanced the disappearance of less-soluble polycyclic aromatic compounds containing five or six aromatic rings. Although the heavy metals in the soil affected the activity of ligninolytic enzymes produced by the fungus (laccase and Mn-dependent peroxidase), no decrease in PAH degradation was found in soil containing Cd or Hg at 10 to 100 ppm. In the presence of cadmium at 500 ppm in soil, degradation of PAHs by soil microflora was not affected whereas the contribution of fungus was negligible, probably due to the absence of Mn-dependent peroxidase activity. In the presence of Hg at 50 to 100 ppm or Cd at 100 to 500 ppm, the extent of soil colonization by the fungus was limited.

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confidence: 99%