| Popis: |
To investigate the mycobiota of usual and water-resistant plasterboard of two types and to represent its ecological characteristic.Microscopic fungi were iso- lated using the method of modeling effects of humid air and water on the plasterboard, and methods of serial dilutions and direct inoculation on agar nutrient media. Analysis of mycobiota of different types of plasterboard was conducted using the methods of quan- titative ecology.For the first time the mycobiota of usual and water-resistant plasterboard was characterized and compared. Simulation results of the modeling effects on plasterboard moist air and water directly, it was established that the species of genera Aspergillus; Chaetomium, Dicyma, Penicillium grew under the action of high relative humidity (above 90 %). The direct effect of water promoted the growth of Alternaria, Cladosporium and Stachybotrys. The highest similarity of mycobiota was conducted for samples of plasterboard produced in 2010. The highest species diversity of microscopic fungi was established for plasterboard 2010, what was twice as high as the usual 2005; the total number of species was also three times more. More than 50 species of micromycetes were isolated from the surface of plasterboard and gypsum, among them A. flavipes, C. globosum, D. aurea, T viride often occurred on cardboard and A. chla- mydosopra, A. infectoria, C. cladosporioides, S. chartarum - in the gypsum core. |
