Biodegradation of PCBs by ligninolytic fungi and characterization of the degradation products

Assessing the ability of white-rot fungi to tolerate polychlorinated biphenyls using predictive mycology

“…Previous studies not only showed that white-rot fungi (WRF) have the capability to degrade PCBs in liquid, soil and sediments but also demonstrated their adaptive ability to grow under critical environmental conditions (Stella et al 2017). WRF such as Phanerochaete chrysosporium (Kamei et al 2006a; Čvančarová et al 2012), Phlebia brevispora (Kamei et al 2006b), Coriolus versicolor (Cloete and Celliers 1999; Čvančarová et al 2012), Irpex lacteus, Bjerkandera adusta, Pycnoporus cinnabarinus, Phanerochaete magnolia, Pleurotus ostreatus (Stella et al 2017) and Dichomitus squalen s (Čvančarová et al 2012) have already proved their potential for removal of PCBs. WRF possess a ligninolytic enzyme complex comprising, among other enzymes, lignin peroxidase (LiP, EC 1.11.1.14), manganese peroxidase (MnP, EC 1.11.1.13) and laccase (Lac, EC 1.10.3.2), involving as well in the oxidation of a wide range of organopollutants.…”

“…Diverse studies shown that Lac, MnP and LiP were responsible for efficient degradation of PCBs (Č et al 1997; Cloete and Celliers 1999; Gayosso-Canales et al 2012). Other authors documented that these enzymes were involved in PCB bioremediation without establishing nevertheless their clear role in the removal mechanism (Pointing, 2001; Beaudette et al 1998; Čvančarová et al 2012). …”

Addition of maize stalks and soybean oil to a historically PCB-contaminated soil: effect on degradation performance and indigenous microbiota

“…In addition, an intracellular P. chrysosporium nitrate reductase was found to mediate the reductive dechlorination of the hexachlorobiphenyl PCB154 [46]. Finally, the ability of fungi to degrade PCBs with different level of chlorination via the formation of CBAs, chlorinated benzaldehydes and alcohols, as well as hydroxylated derivatives of these monoaromatic structures, has been recently shown [14]. This suggests the involvement of both intracellular and extracellular enzymatic systems in the fungal biotransformation of PCBs [13,14,42].…”

“…Moreover, MS were reported to stimulate resident fungal biota in the remediation of soils contaminated by persistent organic compounds (POP) [10]. In this respect, the possible cooperation between resident bacteria and fungi in PCB degradation in an actual site soils has not yet been assessed and this is a lack of knowledge to be covered as several fungal species degrade a quite large range of PCB congeners and do not require biphenyl induction [11][12][13][14].…”

Fungal biodegradation of anthracene-polluted cork: A comparative study

“…Two mechanisms are described to be involved in PAH degradation by fungi: one is based on the action of the intracellular cytochrome P450 monooxygenases, generating epoxides and dihydrodiols intermediates; the other is carried out by extracellular ligninolytic enzymes (i.e. lignin peroxidase, manganese dependent peroxidase and laccase) producing cation radicals from contaminants followed by the formation of quinones [19][20][21][22][23][24] . Due to the fact that the intermediate metabolites generated…”