Influence of Pleurotus ostreatus inoculation on wood degradation and fungal colonization |
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Authors: | Piškur Barbara Bajc Marko Robek Robert Humar Miha Sinjur Iztok Kadunc Aleš Oven Primož Rep Gregor Al Sayegh Petkovšek Samar Kraigher Hojka Jurc Dušan Pohleven Franc |
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Affiliation: | Slovenian Forestry Institute, Ve?na pot 2, SI-1000 Ljubljana, Slovenia. barbara.piskur@gozdis.si |
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Abstract: | The influence of Pleurotus ostreatus inoculation on wood degradation and on fungal community structure was studied. The experiments were performed on an organically poor fly ash deposit covered with a 10 cm layer of beech wood chips inoculated with P. ostreatus isolate ZIM76. Compared to non-inoculated wood chips, inoculation increased the temperatures and relative humidities and, in the first 6 months, accelerated Klason lignin degradation by 9% and also, after 17 months, increased iron translocation into wood chips by 30%. After 6 months, PCR-DGGE showed 22-28 and 13-21 fungal taxa in non-inoculated and P. ostreatus-inoculated beech chips, respectively. The differences in number of taxa and in the fungal community structure (based on Dice coefficient) between non-inoculated and inoculated wood chips diminished with time. The results indicate that the naturally occurring processes of wood degradation are as efficient as those occurring in sites inoculated with P. ostreatus. |
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Keywords: | Fly ash Mycoremediation Fungal succession Wood degradation Pleurotus ostreatus |
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