Biodegradation of polycyclic aromatic hydrocarbons (PAHs) by Cladosporium sphaerospermum isolated from an aged PAH contaminated soil

Abstract

The ability of a Deuteromycete fungus, Cladosporium sphaerospermum, previously isolated from soil of an aged gas manufacturing plant, to degrade polycyclic aromatic hydrocarbons was investigated. This strain was able to degrade PAHs in non-sterile soils (average 23%), including high molecular weight PAHs, after 4 weeks of incubation. In a microcosm experiment, PAH depletion was clearly correlated to fungal establishment. In liquid culture, this strain degraded rapidly benzo(a)pyrene during its early exponential phase of growth (18% after 4 days of incubation). Among extracellular ligninolytic enzyme activities tested, only laccase activity was detected in liquid culture in the absence or in presence of benzo(a)pyrene. C. sphaerospermum might be a potential candidate for an effective bioremediation of aged PAH-contaminated soils.

Improved extraction method to evaluate the degradation of selected PAHs by marine fungi grown in fermentative medium

“…The degradation values obtained by the marine-derived fungi were considered satisfactory in comparison with others studies regarding PAH degradation by non-ligninolytic fungi belonging to the ascomycota and zygomycota phyla. [18][19][20] In Figure 5, the chromatograms referring to the fermentative media containing the fungi that presented the lowest (Penicillium sp. CBMAI 851) and the highest (Aspergillus sclerotiorum CBMAI 849) results for the degradation of pyrene and benzo[a]pyrene are presented.…”

Role of Common Primer as an Antifungal Agent in Timber

“…Wood and other lignocellulosic materials are formed from three main polymeric constituents: cellulose, lignin, and hemicelluloses [9]. It was reported that many wood rotting fungus plays an important role in the biodegradation of polycyclic hydrocarbons (PAHs) [10]. There are reports that oxalic acid produced by fungi presumably precipitates copper into insoluble form of the oxalate, rendering the copper metabolite inert.…”

Phenanthrene Removal from Soil by a Strain of Aspergillus niger Producing Manganese Peroxidase of Phanerochaete chrysosporium

“…Bioaugmentation with Cladosporium sphaerospermum significantly stimulated PAH degradation, especially for high molecular weight PAH [66]. Other authors have reported a significantly improved degradation of high molecular weight PAH after bioaugmentation in PAH-contaminated soil [24,29].…”