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Filamentous Fungi in the Sediments of the East Siberian and Laptev Seas

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Abstract—

This is the first report on abundance and diversity of cultured filamentous fungi and on abundance of yeasts in the sediments of the Laptev and East Siberian seas. A total of 63 isolates of filamentous fungi belonging to 32 morphotypes were obtained from 35 sediment samples. Most morphotypes were represented by single colonies in individual samples; the most frequently occurring species were Pseudeurotium zonatum, Pseudogymnoascus pannorum, and Cordyceps farinosа. In both seas, the abundance of filamentous fungi (up to 12 colonies per 1 g wet sediment) was lower than that of yeasts (up to 68 colonies per 1 g wet sediment). In the Laptev Sea, yeast abundance was low at all stations, while in the East Siberian Sea higher values were found at near-estuarine stations.

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ACKNOWLEDGMENTS

The authors are grateful to D.A. Portnova (Shirshov Institute of Oceanology, Russian Academy of Sciences) for collecting research materials in the 69th cruise of the R/V Akademik Mstislav Keldysh and to researchers of the Lomonosov Moscow State University Marine Research Center for providing sediment samples from the East Siberian Sea.

Funding

The work was supported by the Ministry of Science and Higher Education of the Russian Federation (agreement no. 075-15-2021-1396). Fungal identification was performed in the framework of State Assignments no. 121032300079-4 “Ecophysiology, Cytology and Genetics of Fungi as a Basis of Rational Nature Management and Biotechnologies” and no. 121032500077-8 “Diversity, Structure and Function of Marine and Coastal Ecosystems.”

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Authors and Affiliations

  1. Faculty of Biology, Moscow State University, 119234, Moscow, Russia

    M. L. Georgieva, E. N. Bilanenko, A. A. Georgiev & E. N. Bubnova

  2. Gauze Institute for New Antibiotics, 119021, Moscow, Russia

    M. L. Georgieva

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  1. M. L. Georgieva
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  2. E. N. Bilanenko
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  3. A. A. Georgiev
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  4. E. N. Bubnova
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Correspondence to M. L. Georgieva.

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Translated by E. Makeeva

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Georgieva, M.L., Bilanenko, E.N., Georgiev, A.A. et al. Filamentous Fungi in the Sediments of the East Siberian and Laptev Seas. Microbiology 93, 364–368 (2024). https://doi.org/10.1134/S0026261723604542

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