The Critical Temperature Maximum Limit for Basidiomycetes Laetiporus sulphureus

Background. Today we can observe an increased attention to the usage of various drugs based on Laetiporus sulphu­reus. However, most part of the literature pays attention to pharmacological properties of the products, but the issue of cultivation and storage of museum culture is insufficiently studied. Objective. The aim of the paper is to determine the critical temperature of fungal growth, which is an important indicator for keeping the most productive crop strains. Methods. The study was conducted on 14 strains of Laetiporus sulphureus. Cultivation was carried out for 3 days on the medium with wort agar for temperature control – 35–37 °С. Results. The survey defined the upper limit of the critical temperature of growth for most strains. Conclusions. The obtained data indicate that 37 °С temperature for most strains of the fungi Laetiporus sulphureus is critical, but strains 1518, 1776, 1815 retain poor growth at this temperature that provides the basis for further researches.