Anatomical, Chemical and Mechanical Characteristics of Beech Wood Degraded by Two Pleurotus Species/Anatomska, kemijska i mehanicka svojstva bukova drva degradiranoga gljivama roda Pleurotus
The aim of this study was to determine the destructive capabilities of the two white rot fungi Pleurotus cornucopiae (Pc) and P. eryngii (Pe) compared with the standard fungus Trametes versicolor (Tv) on beech wood samples after 60 days of incubation. Understanding of the white rot decay is importan...
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Veröffentlicht in: | Drvna industrija 2020-03, Vol.71 (1), p.47 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | The aim of this study was to determine the destructive capabilities of the two white rot fungi Pleurotus cornucopiae (Pc) and P. eryngii (Pe) compared with the standard fungus Trametes versicolor (Tv) on beech wood samples after 60 days of incubation. Understanding of the white rot decay is important as it is necessary for the development of effective solutions for wood protection. Measurements of mass loss, chemical, mechanical properties and light microscopical investigations were conducted prior to and after incubation. Mass loss of samples was found to be 9-22 % depending on fungi species. Impact bending strength is not as sensitive as presumed in classical literature. Light microscopy analysis revealed that decay patterns were similar for both fungi. Wood cell wall thinning, fungal colonization hyphae were also the same for both fungi. Results indicated considerable wood attack by both Pleurotus species, Pc being more destructive than Pe. Keywords: Pleurotus cornucopiae; Pleurotus eryngii; Trametes versicolor; wood decay; chemical analysis; light microscopy SAZETAK * Cilj rada bio je utvrditi ucinak dviju gljiva bijele trulezi - Pleurotus cornucopiae (Pc) i P. eryngii (Pe) - na uzorcima bukova drva nakon 60 dana inkubacije u usporedbi s ucinkom standardne gljive Trametes versicolor (Tv). Razumijevanje degradacije drva zbog bijele trulezi iznimno je vazno za razvoj ucinkovitih rjesenja zastite. U pokusu su prije i nakon inkubacije drva provedena mjerenja gubitka mase, kemijskih i mehanickih svojstava te je obavljeno ispitivanje svjetlosnim mikroskopom. Utvrdeno je da je gubitak mase uzoraka iznosio 9 - 22 %, ovisno o vrsti gljive. Cvrstoca drva na savijanje nije toliko osjetljiva na utjecaj gljiva kao sto se navodi u klasicnoj literaturi. Analiza slika dobivenih svjetlosnim mikroskopom pokazala je da su procesi propadanja drva pri zarazi objema gljivama slicni. Stanjivanje stijenki drvnih stanica i hife kolonizacije obiju gljiva takoder su bile jednake. Rezultati su pokazali znatnu degradaciju drva napadnutoga gljivama roda Pleurotus, s tim da je gljiva Pc destruktivnija od gljive Pe. Kljucne rijeci: Pleurotus cornucopiae; Pleurotus eryngii; Trametes versicolor; propadanje drva; kemijska analiza; svjetlosna mikroskopija |
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ISSN: | 0012-6772 |
DOI: | 10.5552/drvind.2020.1906 |