The comparison of fungal degradation of Orientalis beechwood by two white-rot fungi was evaluated in this study. Biological, mechanical, and chemical assessments of beech wood were carried out at 30 day interval for 120 days. The results demonstrated that both fungi have greater effects on beech wood during each exposure time. However, Trametes versicolor degraded beech wood more effectively than Pleurotus ostreatus. On the other hand, chemical analysis indicated that P. ostreatus can degrade cellulose in addition to the normal (lignolytic) degradation. Overall, the current study suggests that some fungi are able to change decay strategies by changing their living condition.

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