Mycobiota of Dead Reed Fragments Immersed in Water (Yaroslavl Oblast, Russia)

The mycobiota on dead submerged plant parts of Phragmites australis reed (leaves, stems, and leaf sheaths) has been studied in Lakes Pleshcheyevo and Mostetskoye, a lake in the Zavolzhsky district of Yaroslavl, and the Kotorosl River (Yaroslavl oblast, Russia). The kingdom Fungi was represented by 52 species belonging to 33 genera, 25 families, 12 orders, and 7 classes in 2 taxonomic phyla: Mucoromycota (4 species) and Ascomycota (48). The kingdom Chromista (funguslike organisms) includes eight species belonging to three genera, two families, two orders, and one class under phylum Oomycota. For the first time, 23 species of micromycetes have been found on reeds. Representatives of the orders Pleosporales (16 species), Helotiales (11), Saprolegniales (7), and Hypocreales (5) prevail. The number of species of fungi on fragments of plants in different aquatic bodies varies from 16 to 39; a statistically significant difference in the species composition of communities of dead reeds is found between a lake in the Zavolzhsky district of Yaroslavl and the Kotorosl River ( R = 0.646; significance level of sample statistic 0.1%).