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Pectin decomposition at the early stage of brown-rot decay by Fomitopsis palustris.
- Source :
-
Bioscience, biotechnology, and biochemistry [Biosci Biotechnol Biochem] 2023 Apr 24; Vol. 87 (5), pp. 555-562. - Publication Year :
- 2023
-
Abstract
- The sapwood of Japanese cedar (Cryptomeria japonica D. Don) was decayed by the brown-rot fungus Fomitopsis palustris under bright and dark conditions. Scanning electron microscopy revealed the presence of mycelia inside the wood even after 1 week from the start of fungal exposure. Moreover, holes were observed in the torus after fungal exposure. Ruthenium red staining revealed that the pectin in pits was largely absent for 3 weeks. These events occurred before the mass loss of wood samples was confirmed at the early stage. Moreover, FpPG28A was more highly expressed at the hyphal front on a pectin-containing medium under dark conditions compared with bright conditions. This up-regulation under dark conditions indicated that the pectin decomposition ability was promoted inside the wood where light could not reach. In conclusion, we suggest that the brown-rot fungus completed its hyphal expansion within the wood via pectin decomposition in pits before holocellulose decomposition.<br /> (© The Author(s) 2023. Published by Oxford University Press on behalf of Japan Society for Bioscience, Biotechnology, and Agrochemistry.)
- Subjects :
- Pectins
Wood microbiology
Fungal Proteins
Coriolaceae
Subjects
Details
- Language :
- English
- ISSN :
- 1347-6947
- Volume :
- 87
- Issue :
- 5
- Database :
- MEDLINE
- Journal :
- Bioscience, biotechnology, and biochemistry
- Publication Type :
- Academic Journal
- Accession number :
- 36731868
- Full Text :
- https://doi.org/10.1093/bbb/zbad014