NDLI: Ecophysiological differences between saprotrophic and clinical strains of the microscopic fungus Aspergillus sydowii (Bainier & Sartory) Thom & Church

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Ecophysiological differences between saprotrophic and clinical strains of the microscopic fungus Aspergillus sydowii (Bainier & Sartory) Thom & Church

Content Provider	Springer Nature Link
Author	Marfenina, O. E. Fomicheva, G. M. Gorlenko, M. V. Svirida, N. M.
Copyright Year	2013
Abstract	A number of ecophysiological differences were shown for saprotrophic and clinical strains of the potentially pathogenic microscopic fungus Aspergillus sydowii. The colony growth rates were determined for four saprotrophic and five clinical fungus strains on Czapek medium within the ranges of temperature (5, 10, 15, 20, 30, 35, 37, 40, 42°C) and humidity (0.8, 0.85, 0.9, 0.95, 099 a$_{w}$), as well as on media with other sources of organic matter (Sabouraud medium, Hutchinson medium with cellulose, and water agar). The capacity for growth of A. sydowii strains on a broad spectrum of organic substrates was determined with the EKOLOG method for multisubstrate testing. The clinical and saprotrophic strains of A. sydowii differed in the colony growth rates under the same temperature and humidity combinations, as well as in the capacity for growth on different organic substrates. At decreased water activity (0.90–0.85 a$_{w}$), the temperature interval for growth of the saprotrophic strains was narrower (30 ± 2°C) than for the clinical strains (25–30°C). Comparison of growth on different media revealed the highest growth rates of the clinical strains on Sabouraud protein-containing medium. The method of multisubstrate testing showed that the saprotrophic strains grew on sugars better than the clinical ones.
Starting Page	85
Ending Page	90
Page Count	6
File Format	PDF
ISSN	00262617
Journal	Microbiology
Volume Number	82
Issue Number	1
e-ISSN	16083237
Language	English
Publisher	SP MAIK Nauka/Interperiodica
Publisher Date	2013-02-17
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Aspergillus environmental and clinical strains growth ecological factors Microbiology Medical Microbiology
Content Type	Text
Resource Type	Article
Subject	Microbiology Applied Microbiology and Biotechnology

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