Clarifying the decay process by Inonotus obliquus in Japanese white birch naturally grown in Nikko, Japan
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Ikumi Nezu
Abstract
Decay process of wood of Japanese white birch [Betula platyphylla Sukaczev var. japonica (Miq.) H. Hara] tree by Inonotus obliquus (Fr.) Pilát was clarified by using the regression model in wood color and chemical components as a function of height position (1, 2, 3, and 4 m above the ground), wood type (sound wood and decayed wood), and their interactions, and anatomical observations. The 3 m height position, at which a sclerotium of I. obliquus was found, showed the highest decayed area percentage among four height positions. By the results of two-way analysis of variance, wood type affected all color indice. In addition, all factors (height position, wood type, and their interaction) were significant in all wood chemical components except for Klason lignin and hemicellulose. In the wood of the reaction zone, some substances were formed in the lumens of many vessels and a few wood fibers. Based on the results, we proposed the decay process of I. obliquus in naturally grown Japanese white birch, and the proposed process will contribute to a full understanding of the interactions between I. obliquus and Japanese white birch in the future.
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Author contributions: All the authors accept responsibility for the entire content of this submitted manuscript and approved its submission.
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Research funding: None declared.
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Conflict of interest statement: The authors have no conflicts of interest to declare with regard to this article.
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Supplementary Material
This article contains supplementary material (https://doi.org/10.1515/hf-2022-0152).
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Articles in the same Issue
- Frontmatter
- Wood Biochemistry
- Natural durability and fungal diversity of five wood species in a field-test site in Jeongseon, Korea
- Clarifying the decay process by Inonotus obliquus in Japanese white birch naturally grown in Nikko, Japan
- Wood Chemistry
- Kraft cooking of birch wood chips: differences between the dissolved organic material in pore and bulk liquor
- Effect of alkali charge on the performance of Eucalyptus globulus kraft pulps for tissue applications
- Wood Physics/Mechanical Properties
- Hydromechanical behavior of wood during drying studied by NIR spectroscopy and image analysis
- Mechanism elucidation for wood sandwich compression from the perspective of yield stress
- Wood Technology/Products
- Antifungal properties of lauric arginate (LAE) treated wood
- Preventing fiber–fiber adhesion of lignin–cellulose precursors and carbon fibers with spin finish application
Articles in the same Issue
- Frontmatter
- Wood Biochemistry
- Natural durability and fungal diversity of five wood species in a field-test site in Jeongseon, Korea
- Clarifying the decay process by Inonotus obliquus in Japanese white birch naturally grown in Nikko, Japan
- Wood Chemistry
- Kraft cooking of birch wood chips: differences between the dissolved organic material in pore and bulk liquor
- Effect of alkali charge on the performance of Eucalyptus globulus kraft pulps for tissue applications
- Wood Physics/Mechanical Properties
- Hydromechanical behavior of wood during drying studied by NIR spectroscopy and image analysis
- Mechanism elucidation for wood sandwich compression from the perspective of yield stress
- Wood Technology/Products
- Antifungal properties of lauric arginate (LAE) treated wood
- Preventing fiber–fiber adhesion of lignin–cellulose precursors and carbon fibers with spin finish application