Patterns of laccase and peroxidases in coarse woody debris of Fagus sylvatica, Picea abies and Pinus sylvestris and their relation to different wood parameters

• DOI: 10.1007/s10342-015-0920-0
• Publication Date: 2015-10-27T06:49:57Z
• Authors: Tobias Arnstadt; Björn Hoppe; Tiemo Kahl; Harald Kellner; Dirk Krüger; Claus Bässler; Jürgen Bauhus; Martin Hofrichter
• Keywords: Manganese peroxidase; Lignin peroxidase; Abies alba; Coarse Woody Debris

Lignin and its degradation, particularly in forest ecosystems, play a major role the global carbon cycle. Filamentous fungi equipped with extracellular oxidoreductases (oxidative enzymes), i.e., laccase, manganese-dependent peroxidases several other peroxidases, are key players bioconversion of lignin. In particular, for coarse woody debris (CWD), this process is poorly understood activities laccase have never been studied on large field scale. We investigated these enzymes 701 samples Fagus sylvatica, Picea abies Pinus sylvestris CWD across three regions Germany analyzed their dependence pH, water content, wood density, total lignin, organic extractives, metals, water-soluble lignin fragments fungal species richness. Respective enzyme were present 79 % all samples, highly variable more frequent F. sylvatica than coniferous wood. Logistic regressions correlations between variables revealed that community structure amount most important determinants, prevalent acidic pH suitable to facilitate manganese peroxidase activities. Concentrations metals (manganese, copper, iron) sufficient ensure synthesis functioning relevant enzymes. Based study, we conclude but pattern secretion result complex array parameters structure, which could only partly be resolved.