Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Study of the combined effect of temperature, pH and water activity on
  the radial growth rate of the white-rot basidiomycete Physisporinus vitreus
  by using a hyphal growth model   The present work investigates environmental effects on the growth of fungal
colonies of P. vitreus by using a lattice-free discrete modelling approach
called FGM (Fuhr et al. (2010), arXiv:1101.1747), in which hyphae and nutrients
are considered as discrete structures. A discrete modelling approach allows
studying the underlying mechanistic rule concerning the basic architecture and
dynamic of fungal networks on the scale of a single colony. By comparing
simulations of the FGM with laboratory experiments of growing fungal colonies
on malt extract agar we show that combined effect of temperature, pH and water
activity on the radial growth rate of a fungal colony on a macroscopic scale
may be explained by a power law for the growth costs of hyphal expansion on a
microscopic scale. The information about the response of the fungal mycelium on
a microscopic scale to environmental conditions is essential to simulate its
behavior in complex structure substrates such as wood, where the impact of the
fungus to the wood (i.e. the degradation of bordered pits or the creation of
bore holes and cavities) changes the local environmental condition, e.g. the
permeability of the substrate and therefore the water activity level in a
colonized wood cell lumen. A combination of diffusion and moisture processes
into wood with the FGM may brighten the knowledge about the colonization
strategy of P. vitreus and helps to optimize its growth behavior for
biotechnological application such as bioincising.

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The categories of this paper are: nlin
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The categories of this paper are: atom-ph
5
The categories of this paper are: gr-qc
28
The categories of this paper are: alg-geom
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The categories of this paper are: dg-ga
29
The categories of this paper are: funct-an
33
The categories of this paper are: plasm-ph
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The categories of this paper are: math-ph
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The categories of this paper are: astro-ph
20
The categories of this paper are: acc-phys
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The categories of this paper are: nucl-th
2
The categories of this paper are: math
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The categories of this paper are: stat
23
The categories of this paper are: solv-int
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The categories of this paper are: hep-ex
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The categories of this paper are: chao-dyn