Saprotrophic wood-inhabiting basidiomycetes are the most important decomposers of lignin and cellulose in dead wood and as such they attracted considerable attention. The aims of this work were to quantify the activity and spatial distribution of extracellular enzymes in coarse wood colonised by the white-rot basidiomycete Fomes fomentarius and in adjacent fruitbodies of the fungus and to analyse the diversity of the fungal and bacterial community in a fungus-colonised wood and its potential effect on enzyme production by F. fomentarius. Fungus-colonised wood and fruitbodies were collected in low management intensity forests in the Czech Republic. There were significant differences in enzyme production by F. fomentarius between Betula pendula and Fagus sylvatica wood, the activity of cellulose and xylan-degrading enzymes was significantly higher in beech wood than in birch wood. Spatial analysis of a sample B. pendula log segment proved that F. fomentarius was the single fungal representative found in the log. There was a high level of spatial variability in the amount of fungal biomass detected, but no effects on enzyme activities were observed. Samples from the fruiting body showed high β-glucosidase and chitinase activities compared to wood samples. Significantly higher levels of xylanase and cellobiohydrolase were found in samples located near the fruitbody (proximal), and higher laccase and Mn-peroxidase activities were found in the distal ones. The microbial community in wood was dominated by the fungus (fungal to bacterial DNA ratio of 62-111). Bacterial abundance composition was lower in proximal than distal parts of wood by a factor of 24. These results show a significant level of spatial heterogeneity in coarse wood. One of the explanations may be the successive colonization of wood by the fungus: due to differential enzyme production, the rates of biodegradation of coarse wood are also spatially inhomogeneous.
- MeSH
- Bacteria enzymologie izolace a purifikace MeSH
- beta-glukosidasa metabolismus MeSH
- biodegradace MeSH
- bříza enzymologie mikrobiologie MeSH
- buk (rod) enzymologie mikrobiologie MeSH
- celulosa-1,4-beta-cellobiosidasa metabolismus MeSH
- chitinasy metabolismus MeSH
- Coriolaceae enzymologie izolace a purifikace MeSH
- DNA bakterií analýza MeSH
- DNA fungální analýza MeSH
- dřevo enzymologie mikrobiologie MeSH
- ekologie MeSH
- lakasa metabolismus MeSH
- lignin metabolismus MeSH
- mikrobiální společenstva MeSH
- peroxidasy metabolismus MeSH
- stromy enzymologie mikrobiologie MeSH
- xylany metabolismus MeSH
- xylosidasy metabolismus MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
- Geografické názvy
- Česká republika MeSH
