Modelling the hyphal growth of the wood-decay fungus Physisporinus vitreus

被引:32
作者
Fuhr, M. J. [1 ,2 ]
Schubert, M. [1 ]
Schwarze, F. W. M. R. [2 ]
Herrmann, H. J. [1 ]
机构
[1] Swiss Fed Inst Technol, Inst Bldg Mat Computat Phys Engn Mat, CH-8093 Zurich, Switzerland
[2] EMPA, Swiss Fed Labs Mat Sci & Technol, Wood Lab, Grp Wood Protect & Biotechnol, CH-9014 St Gallen, Switzerland
基金
瑞士国家科学基金会;
关键词
Bordered pit; Filamentous fungus; Fungal colony; Mycelia modelling; Picea abies; PERMEABILITY; TRICHODERMA; TRACHEIDS; MECHANISM; NETWORKS;
D O I
10.1016/j.funbio.2011.06.017
中图分类号
Q93 [微生物学];
学科分类号
071005 ; 100705 ;
摘要
The white-rot fungus, Physisporinus vitreus, degrades the membranes of bordered pits in tracheids and consequently increases the permeability of wood, which is a process that can be used by the wood industry to improve the uptake of wood preservatives and environmentally benign wood modification substances to enhance the use and sustainability of native conifer wood species. To understand and apply this process requires an understanding of how a complex system (fungus wood) interacts under defined conditions. We present a three-dimensional fungal growth model (FGM) of the hyphal growth of P. vitreus in the heartwood of Norway spruce. The model considers hyphae and nutrients as discrete structures and links the microscopic interactions between fungus and wood (e.g. degradation rate and degree of opening of pits) with macroscopic system properties, such penetration depth of the fungus, biomass, and distribution of destroyed pits in early- and latewood. Simulations were compared with experimental data. The growth of P. vitreus is characterized by a stepwise capture of the substrate and the effect of this on wood according to different model parameters is discussed. (C) 2011 British Mycological Society. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码:919 / 932
页数:14
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