A5013586273- Microbial Community Ecology and Physiology
- Diatoms and Algae Research
- Methane Hydrates and Related Phenomena
- Genomics and Phylogenetic Studies
- Protist diversity and phylogeny
- Water Resources and Management
- Aquatic and Environmental Studies
- Environmental DNA in Biodiversity Studies
- Algal biology and biofuel production
- Geology and Paleoclimatology Research
- Polar Research and Ecology
- Geological Studies and Exploration
- Analytical chemistry methods development
- Environmental Toxicology and Ecotoxicology
- Soil and Environmental Studies
- Enzyme-mediated dye degradation
- Biocrusts and Microbial Ecology
- Gut microbiota and health
- Marine and environmental studies
- Microbial Metabolism and Applications
- Mass Spectrometry Techniques and Applications
- Digestive system and related health
- Human Health and Disease
- Nutrition, Genetics, and Disease
- Advanced Proteomics Techniques and Applications
Siberian Branch of the Russian Academy of Sciences
2013-2025
Limnological Institute
2013-2025
Kemerovo State Medical Academy
2024
Irkutsk Research Institute of the Forestry Industry
2023
Russian Academy of Sciences
2011-2021
Institute of Chemical Biology and Fundamental Medicine
2018
The composition of bacterial communities in Lake Baikal different hydrological periods and at depths (down to 1515 m) has been analyzed using pyrosequencing the 16S rRNA gene V3 variable region. Most resulting 34 562 reads Bacteria domain have clustered into 1693 operational taxonomic units (OTUs) classified with phyla Proteobacteria, Actinobacteria, Chloroflexi, Bacteroidetes, Firmicutes, Acidobacteria Cyanobacteria. It found that their family level relative contributions distributed over...
Production of axenic cultures diatoms is a highly relevant task, as these widespread organisms are objects research in different fields biology, from ecology to whole‐genome studies, and promising producers various organic molecules, including biologically active substances. However, culturing isolated natural communities accompanied by the development associated microorganisms. We propose procedure for establishing an culture freshwater diatom Synedra asus subsp. radians (Kütz.) Skabitsch....
Fragilaria and Ulnaria are two closely related diatom genera for which the delimitation circumscription of several species is unclear. We studied strains isolated from Lake Baikal compared them with freshwater reservoirs in Europe Asia using phylogenetic methods, microscopy interclonal crossing experiments. The results analyses fragments rbcL 18S rRNA genes revealed that baikalian F. radians clade was independent representatives genus other localities. Among we found following tree groups at...
Insight into the role of bacteria in degradation diatoms is important for understanding factors and components silica turnover aquatic ecosystems. Using microscopic methods, it has been shown that degree diatom preservation numbers diatom-associated surface layer bottom sediments decrease with depth; near-bottom water layer, majority are associated cells, being located either on cell or within cell. The structure microbial community characterized by pyrosequencing 16S rRNA gene, which...
Silica-scaled chrysophytes are a widespread group of microeukaryotes, an important component aquatic habitats. They belong to different evolutionary lineages and they characterized by the presence siliceous scales, but differ in trophic mode. We studied diversity these organisms months ice cover period two subarctic lakes Yakutia, Labynkyr Vorota. chrysophytes, due various modes, have competitive advantage conditions long cover. Statistical analysis has shown relationship between relative...
Abstract Diatoms are a group of eukaryotic microalgae populating almost all aquatic and wet environments. Their abundance species diversity make these organisms significant contributors to biogeochemical cycles important components ecosystems. Although progress has been made in studies (Bacillariophyta) over the last two decades, since spread “omics” technologies, our current knowledge molecular processes gene regulatory networks that facilitate environmental adaptation remain incomplete....
Silicon transporters (SIT) are the proteins, which capture silicic acid in aquatic environment and direct it across plasmalemma to cytoplasm of diatoms. Diatoms utilize build species-specific ornamented exoskeletons make a significant contribution global silica cycle, estimated at 240 ±40 Tmol year. Recently SaSIT genes freshwater araphid pennate diatom Synedra acus subsp. radians found be present genome as cluster two structural (SaSIT-TD SaSIT-TRI) encoding several concatenated copies SIT...
Diatoms are a group of unicellular eukaryotes that essential primary producers in aquatic ecosystems. The dynamic nature their habitat necessitates quick and specific response to various stresses. However, the molecular mechanisms physiological adaptations still underexplored. In this work, we study cosmopolitan freshwater diatom Ulnaria acus (Bacillariophyceae, Fragilariophycidae, Licmophorales, Ulnariaceae, Ulnaria) relation range stress factors, namely silica deficiency, prolonged...
Diatoms from the extreme cold habitats in northern areas of East Siberia are still poorly studied. Ecological significance lakes Pole Cold Northern Hemisphere consists their pristine environment characterized by special environmental factors, such as long ice cover period, low temperatures, short vegetative photosynthetically active radiation, deficiency nutrients. Such water systems can thus be used sensitive indicators changes. The diatom Ulnaria ulna (Nitzsch) Compère genus (Kützing) is...
Two new species of silica-scaled chrysophytes (order Synurales) from the genus Mallomonas and sections Striatae baicalensis sp. nov. M. grachevii found at bottom surface ice Lake Baikal, with a structure siliceous scales, are described using electron microscopy. The main unique distinctive feature is its dome long spine slightly asymmetrical shape regardless their position on cell. We could not find bristles, if there spines dome, we can assume that they may be missing. distinguishing...
In the northern lakes of Yakutia, Vorota and Labynkyr, which are 2100 kilometres northeast Lake Baikal, we found a putative Baikal endemic, Lindavia minuta. Morphological analysis non-metric multidimensional scaling showed that L. minuta populations from Yakutian Transbaikalian belong to same (morpho) species. The possible dispersal history is discussed. most probable hypothesis was present in basin during several Pleistocene glaciation cycles, since previously connected River Lena, it there...
Algae–bacteria interactions play an important role in water ecosystems. In this work, the BS2-15 algicidal strain was isolated from bottom sediments of Lake Baikal and identified as Bacillus mycoides on basis 16S rDNA sequencing, its described ultrastructure, biochemical properties. B. demonstrated to have a strong effect against freshwater diatom culture Ulnaria acus, inhibiting growth increasing frustules fragility. By analyzing impact bacterial filtrate onto cells U. we that perhaps...
Diatom sediment records of large lakes can be used to decipher the history ancient phytoplankton. The upper layer is an important area remineralization sedimenting phytoplankton biomass. It hosts a bacterial community different from those both water column and deeper layers. In this work, we analyzed structure diversity communities Bacteria Archaea in surface core containing valves diatoms, major producers Lake Baikal. Pyrosequencing V3–V4 region 16 S ribosomal RNA (rRNA) archaeal V1–V3 rRNA...
A high abundance of planktonic microalgae is typically thought to be related their ‘bloom’, that is, active population growth. Diatom blooms in the photic zone Lake Baikal generally occur during hydrological spring (April–June); when summer arrives and surface water temperature increases, diatoms are replaced by other microalgae. In July 2019, we found a concentration diatom Fragilaria radians at station South was extremely for season. This species spring, but (May) this alga nearly absent...