Dimeric and monomeric laccases of soil-stabilizing lichen Solorina crocea: Purification, properties and reactions with humic acids

► Lichen Solorina crocea produces two forms of laccases - large and small. ► Small laccase can be obtained from the large form. ► Purified small laccase is close by its properties to laccases of basidiomycetes. ► Large laccase has low oxidation potential and is less resistant to high temperature. ► Both laccases of S. crocea can depolymerize and decolorize soil humic acids in vitro.