Fungus, white rot

Pleurotus eryngii (DC.) Quél.

King oyster mushroom

The species in which versatile peroxidase was described, an enzyme combining the substrate interaction sites of manganese peroxidase and lignin peroxidase that directly oxidises substituted phenols, dyes and veratryl alcohol. Remediation data are laboratory-scale.

Pleurotus eryngii
Gerhard Koller, Mushroom Observer, CC BY-SA 3.0

How it works

Mechanisms
mycodegradation
Enzymes
versatile peroxidase, manganese peroxidase, laccase

Contaminants

ContaminantEvidenceWhat was shown
Synthetic dyeslaboratory

P. eryngii peroxidase isoenzymes decolorise industrial azo and phthalocyanine dyes in the absence of Mn2+ (apparent Km 4-16 µM, specific activity 3.2-10.9 U/mg, figures covering the B. adusta and P. eryngii enzymes); Phanerochaete chrysosporium MnP oxidises them little or not at all.

Polycyclic aromatic hydrocarbonslaboratory

Soils spiked with fluoranthene and nickel: 86-92% of fluoranthene disappeared in inoculated soils against 71-82% in non-inoculated ones. In liquid culture strain F032 removed 59% (static) and 73% (agitated) of benzo[a]pyrene in 20 days, with benzo[a]pyrene-3,6-quinone among the products.

Nickellaboratory

In the same co-contaminated soils the fungus took up nickel (4.88-39.53 mg/kg); nickel reduced fungal growth and fluoranthene dissipation.

Limits

The gain over non-inoculated soil is modest (about 10-15 percentage points for fluoranthene) and concerns freshly spiked contaminants, which are more available than aged ones. No field trial was found. The fungus takes up nickel: fruiting bodies grown on contaminated matrices should not be eaten.

Sources

Draft compiled from public sources, not yet reviewed.

Species that the literature reports acting on at least one of this one's contaminants, the closest first.

All plants and fungi