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 yeasts and filamentous fungi in the sediments of the Laptev and East Siberian seas. A total of 63 isolates of mycelial fungi belonging to 32 morphotypes were obtained from 35 sediment samples. Most morphotypes were represented by single colonies in individual samples; the most often occurring species were Pseudeurotium zonatum, Pseudogymnoascus pannorum, and Cordyceps farinosа. In both seas, 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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About the authors

M. L. Georgieva

Lomonosov Moscow State University; Gauze Institute for New Antibiotics

Author for correspondence.
Email: i-marina@yandex.ru
Russian Federation, Moscow; Moscow

E. N. Bilanenko

Lomonosov Moscow State University

Email: i-marina@yandex.ru
Russian Federation, Moscow

A. A. Georgiev

Lomonosov Moscow State University

Email: i-marina@yandex.ru
Russian Federation, Moscow

E. N. Bubnova

Lomonosov Moscow State University

Email: i-marina@yandex.ru
Russian Federation, Moscow

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2. Fig. 1. Schematic diagram of the stations of the 69th cruise of the R/V ‘Akademik Mstislav Keldysh’. The diameter of the marks is proportional to the number of fungi in 1 g of soil at each of the stations: lighter circle - to the number of yeasts, darker - to mycelial fungi. The stations of the MSU CMI voyage - ‘station 1’ and ‘station 2’ - are also marked

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