Effect of water activity and relative air humidity on thr growth of Penicillium chrysogenum Thom, Aspergillus repens (Corda) Sacc., and Trichoderma viride Pers. Isolated from living spacesстатья
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:Original data on the growth parameters of the fungi Penicillium chrysogenum Thom, Aspergillus
repens (Corda) Sacc., and Trichoderma viride Pers. isolated from living spaces in Moscow are presented.
Spore germination, fungal growth, and the radial growth rate of the colonies were investigated upon cultiva
tion on agarized nutrient media with different water activity (aw) values. Spore germination and fungal growth
were studied in house dust under laboratory conditions at different relative air humidity (RH). It was shown
that, at decreased aw and RH, the spore germination time increased, as did the period from germination to
mycelium and conidia formation, while the radial growth rate of colonies decreased. House dust was found
to be a suitable growth substrate for A. repens and P. chrysogenum, supporting their complete life cycle. It was
suggested that house dust is unsuitable as a substrate for the growth of T. viride. The aw and RH ranges for
development of these micromycetes were determined. On this basis, the A. repens, P. chrysogenum, and T. vir
ide strains isolated from living spaces were identified as xerophilic, xerotolerant, and hygrophilic ones,
respectively.