Natural decomposition of hornbeam wood decayed by the white rot fungus Trametes versicolor

Abstract

The impacts of white-rot fungi on altering wood chemistry have been studied mostly in vitro. However, in vivo approaches may enable better assessment of the nature of interactions between saprotrophic fungi and host tree in nature. Hence, decayed and sound wood samples were collected from a naturally infected tree (Carpinus betulus L.). Fruiting bodies of the white rot fungus Trametes versicolor grown on the same tree were identified using rDNA ITS sequencing. Chemical compositions (cellulose and lignin) of both sound and infected wood were studied. FT-IR spectroscopy was used to collect spectra of decayed and un-decayed wood samples. The results of chemical compositions indicated that T. versicolor reduced cellulose and lignin in similar quantities. Fungal activities in decayed wood causes serious decline in pH content. The amount of alcohol-benzene soluble extractives was severely decreased, while a remarkable increase was found in 1% sodium hydroxide soluble and hot water extractive contents in the decayed wood samples, respectively. FT-IR analyses demonstrated that T. versicolor causes simultaneous white rot in the hornbeam tree in vivo which is in line with in vitro experiments.

Monitoring the cell wall characteristics of degraded beech wood by white-rot fungi: Anatomical, chemical, and photochemical study

“…As Mohebby (2005) and Karim et al (2017) stated that the white-rot fungus T. versicolor has the ability to remove most of the hemicelluloses adjacent to lignin and also partially remove the cellulose. According to the spectra assigned for the un-decayed wood (Table 3), the peaks related to hemicelluloses and lignin changed during fungal exposure, with partial changes in cellulose clearly indicating nonselective degradation of wood by both fungi.…”

Improving Fire Retardancy of Beech Wood by Graphene

“…Wood-based materials and composites are no exception [22][23][24]. Different nano-metals and nano-minerals were utilized to improve heat-transfer property in solid wood species and wood composite mats; they were also used to improve biological resistance against different deteriorating fungi to decrease hot-press time as a costly bottle-neck in nearly all wood-composite manufacturing factories and to increase thermal conductivity in solid wood and composite mats [3,15,18,[25][26][27][28][29][30][31][32][33].…”

Ni̇şasta Esasli Bi̇yoplasti̇k Kaşik Atiklarinin Fungal Bi̇yoloji̇k Parçalanabi̇li̇rli̇ği̇ni̇n Araştirilmasi

“…al., 2013). It is a unique microorganism that has a widespread host and act as great carbon recycler in the natural forest ecosystems (Karim et. al., 2017).…”