DOTHIDEOMYCETES OF GREEN PLANTATIONS OF URBAN SETTLEMENTS OF THE STEPPE ZONE OF UKRAINE
Journal Title: Наукові доповіді НУБіП України - Year 2018, Vol 1, Issue 1
Abstract
The article considers the species composition of the Dothideomycetes and its structural characteristics in conditions of green plantations of the steppe zone of Ukraine. The materials of the work were the original mycological collecting carried out within the mycological survey of this territory during 2008-2016, as well as the materials of the herbarium of the Institute of Botany named after M. Kholodny National Academy of Sciences of Ukraine (KW). Herbarium collection and identification of the samples were performed in accordance with the generally accepted methods of cameral processing of xylotrophic, herbotrophic and coprothrophic micromycetes. To establish the taxonomic affiliation of species, the method of light microscopy was applied. As a result of our research, a species diversity of ascolocular fungi (Dothideomycetes) has been established, which includes 86 species from 28 genera 17 families 5 orders 2 subclasses and groups of taxa of Incertae sedis. The characteristic features of the taxonomic structure of the investigated mycobiota are the predominance of representatives of the order of Pleosporales, the families Cucurbitariaceae, Mycosphaerellaceae, and Botryosphaeriaceae, the genera Cucurbitaria, Mycosphaerella, Otthia and Botryosphaeria. In the ecological structure of the identified species composition, approximately equal parts comprise both saprotrophic and phytopathogenic species. The ascolocular fungi species are form consortium connections with 78 species of vascular plants from 57 genera of 32 families, with the largest number of micromycetes noted on plants of the Rosaceae, Oleaceae, Aceraceae and Caprifoliaceae. The greatest number of fungal consorts is associated whis Fraxinus excelsior L. and Berberis vulgaris L. in green plantings. A significant number of Dothideomycetes is associated with representatives of the genus Acer (10 species). The unsatisfactory phytosanitary state of plantings favor the spread of micromycete species with pathogenic properties.
Authors and Affiliations
O. V. Korolyova
Keywords
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