Comparison of the Decay Behavior of Two White-Rot Fungi in Relation to Wood Type and Exposure Conditions

Fungal wood decay strategies are influenced by several factors, such as wood species, moisture content, and temperature. This study aims to evaluate wood degradation characteristics of spruce, beech, and oak after exposure to the white-rot fungi <i>Pleurotus</i><i>ostreatus</i&g...

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Bibliographic Details
Main Authors: Ehsan Bari, Geoffrey Daniel, Nural Yilgor, Jong Sik Kim, Mohammad Ali Tajick-Ghanbary, Adya P. Singh, Javier Ribera
Format: Article
Language:English
Published: MDPI AG 2020-12-01
Series:Microorganisms
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Online Access:https://www.mdpi.com/2076-2607/8/12/1931
Description
Summary:Fungal wood decay strategies are influenced by several factors, such as wood species, moisture content, and temperature. This study aims to evaluate wood degradation characteristics of spruce, beech, and oak after exposure to the white-rot fungi <i>Pleurotus</i><i>ostreatus</i> and <i>Trametes</i><i>versicolor</i>. Both fungi caused high mass losses in beech wood, while spruce and oak wood were more resistant to decay. The moisture content values of the decayed wood correlated with the mass losses for all three wood species and incubation periods. Combined microscopic and chemical studies indicated that the two fungi differed in their decay behavior. While <i>T. versicolor</i> produced a decay pattern (cell wall erosion) typical of white-rot fungi in all wood species, <i>P. ostreatus</i> caused cell wall erosion in spruce and beech and soft-rot type I (cavity formation) decay in oak wood. These observations suggest that <i>P. ostreatus</i> may have the capacity to produce a wider range of enzymes/radicals triggered by the chemical composition of wood cell walls and/or local compositional variability within the cell wall.
ISSN:2076-2607