In vivo investigation of chemical alteration in oak wood decayed by Pleurotus ostreatus

Karim, Maryam; Daryaei, Mehrdad Ghodskhah; Torkaman, Javad; Oladi, Reza; Ghanbary, Mohammad Ali Tajick; Bari, Ehsan

doi:10.1016/j.ibiod.2015.12.012

Cited by 35 publications

(20 citation statements)

References 44 publications

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“…It has been reported that wood decay by the whiterot fungus Pleurotus mainly ligninolytic (Martinez et al 2001, Martinez et al 2005, Baldrian 2008, Kubicek 2013, while the results of recent studies show both cellulolytic and lignolytic reactions. (Bari et al 2015a, Bari et al 2015b, Bari et al 2015c, Bari et al 2015d, Karim et al 2016. On the other hand, recent studies have reported that the white rot fungus P. ostreatus also has a capability of producing soft rot decay in oak wood under natural condition (Bari et al 2017).…”

Section: Introductionmentioning

confidence: 99%

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

Bari

Mohebby

Naji³

et al. 2018

Maderas, Cienc. tecnol.

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Meticulous chemical analysis of decaying xylem and linking it to corresponding anatomical modification at the cellular level can improve our understanding of the decay process. The aim of this study was to monitor the histological, chemical, photochemical, and progression of wood degradation by two white-rot fungi at different intervals. Oriental beech wood (Fagus orientalis) blocks were exposed to Pleurotus ostreatus and Trametes versicolor to investigate the degradation capabilities of these two fungi. Light microscopy was used to study the decay patterns in wood. Decayed wood samples were also analyzed to determine lignin, cellulose and sugar contents and also evaluated at two week intervals by FT-IR spectroscopy to study chemical alterations. According to chemical analyses lignin is the most degraded polymer followed by cellulose and hemicelluloses for both white rot fungi. However, both test fungi tended to consume lignin more than cellulose. FT-IR spectra changes for lignin and carbohydrates in beech wood supported chemical alteration and indicated that both fungi decay wood in a simultaneous pattern.

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Section: Introductionmentioning

confidence: 99%

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

Bari

Mohebby

Naji³

et al. 2018

Maderas, Cienc. tecnol.

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“…Martínez et al 2001, Mohebby 2005, Bari et al 2015a, Karim et al 2016 But the most of the above mentioned methods have been carried out in vitro. However, there are inherent difficulties in emulating micro-environmental conditions occurring in the field (Rayner and Webber 1984) and in vivo approaches may enable better assessment of the nature of interactions between saprotrophic fungi and the wood (Woodward and Boddy 2008).…”

Section: Introductionmentioning

confidence: 99%

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

Karim

Daryaei

Torkaman

et al. 2017

An. Acad. Bras. Ciênc.

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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.

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“…Figure 3 shows that the three fungi caused simultaneous white-rot in beech wood samples. Karim et al (2016) showed that Pleurotus ostreatus decomposed beech and oak wood samples in natural and controlled conditions also follow a similar lignin degradation pattern. However, indications of selective digestion were also found in some wood cells.…”

Section: Monitoring Beech Wood Degraded By White-rot Fungus 34 Praćmentioning

confidence: 88%

Anatomical, Chemical and Mechanical Characteristics of Beech Wood Degraded by Two Pleurotus Species

et al. 2020

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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.

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In vivo investigation of chemical alteration in oak wood decayed by Pleurotus ostreatus

Cited by 35 publications

References 44 publications

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

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

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

Anatomical, Chemical and Mechanical Characteristics of Beech Wood Degraded by Two Pleurotus Species

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