Abstract
The study of alkali-resistant fungi has been carried out for the first time on the coast of saline lakes in the south of the Trans-Baikal region on the territory of the Daursky Biosphere Reserve (lakes Zun-Torey and Khangei). The changes in the structure of the community of alkali-resistant ascomycetes depend on local conditions. The coast of Khangei is devoid of halophites, but has a high content of Artemia eggs and is characterized by the absolute dominance of the alkaliphilic ascomycete Sodiomyces alkalinus (100% occurrence) and Emericellopsis alkalina (80%), with a minimum diversity of other fungi. S. alkalinus predominates (100%) on the coast of Lake Zun-Torey in damp places without plants. Dark-colored fungi from Dothideomycetes (Alternaria, Neocamarosporium, etc.) predominate in the alkaline soil samples of this lake not far from the halophites; the occurrence of E. alkalina is 60% and S. alkalinus is not found here, but high occurrence is shown for the other species of Plectosphaerellaceae (Chordomyces and Gibellulopsis). The distribution, substrate preferences, and functional roles of alkaliphilic and alkalitolerant fungi in extreme natural habitats with soda salinity are discussed in this paper.
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ACKNOWLEDGMENTS
We are grateful to the organizers of the trip to the Daursky state biosphere reserve, E.B. Matyugina (Institute of Natural Resources, Siberian Branch, Russian Academy of Sciences) and E.S. Zadereev (Institute of Biophysics, Siberian Branch, Russian Academy of Sciences), which was held as part of the 13th International Conference on Salt Lake Research (ICSLR 2017), for the opportunity to visit unique natural biotopes and collect samples for research. We thank the staff of the Daursky Nature Reserve for their help in organizing the collection of samples and conducting research, as well as A.A. Kotov (Institute of Ecology and Evolution, Russian Academy of Sciences) for providing the samples collected on the coast of Lake Zun-Torey in 2018 for the study. We are also grateful to the staff of the Department of Mycology and Algology, Faculty of Biology, Moscow State University (E.Yu. Blagoveschenskaya and A.A. Georgiev) for their participation in discussing the results.
Funding
The study of Georgieva M.L. (morphological and cultural studies of fungi) is supported by the Russian Science Foundation (Grant no. 22-25-00353); research of Bilanenko E.N. and Bondarenko E.N. (study with a collection of fungi) was carried out as part of the Scientific Project of the State Order of the Government of Russian Federation to Lomonosov Moscow State University no. 121032300079-4; work of Markelova N.N. (genetic studies of fungi) was carried out as part of the scientific project of the state task of Gause Institute of New Antibiotics. SEM studies were carried out at the Shared Research Facility “Electron microscopy in life sciences” at Moscow State University (Unique Equipment “Three-dimensional electron microscopy and spectroscopy”).
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Georgieva, M.L., Bondarenko, S.A., Markelova, N. et al. Alkali-Resistant Filamentous Fungi of the Coastal Zone of the Dauria Saline Lakes. Contemp. Probl. Ecol. 16, 391–402 (2023). https://doi.org/10.1134/S1995425523040042
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DOI: https://doi.org/10.1134/S1995425523040042