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Metabolic activity of cryogenic soils in the subarctic zone of Siberia towards “green” bioplastics / S. V. Prudnikova, S. Y. Evgrafova, T. G. Volova // Chemosphere. - 2021. - Vol. 263. - Ст. 128180, DOI 10.1016/j.chemosphere.2020.128180 . - ISSN 0045-6535
Кл.слова (ненормированные):
metabolic activity -- P(3HB) bioplastic -- P(3HB) properties -- P(3HB)-degrading strains -- Siberian cryogenic soils -- structure of microbial community -- Aspergillus -- Bacteriology -- Biodegradable polymers -- Biodegradation -- Cryogenics -- Crystallinity -- Metabolism -- Polymer films -- Reinforced plastics -- RNA -- Soils -- Aspergillus fumigatus -- Degree of crystallinity -- Microbial communities -- Nucleotide sequences -- Poly-3-hydroxybutyrate -- Polymer biodegradation -- Soil microbial community -- Surface microstructures -- Bacteria -- bacterial RNA -- fungal RNA -- mineral -- plastic -- poly(3 hydroxybutyric acid) -- polymer -- ribosome RNA -- RNA 16S -- RNA 18S -- RNA 28S -- RNA 5.8S -- abundance -- bacterium -- biodegradation -- biomass -- community structure -- concentration (composition) -- crystallinity -- fungus -- microbial community -- microstructure -- plastic -- polymer -- soil temperature -- subarctic region -- Actinobacteria -- Agrobacterium tumefaciens -- Antarctica -- Arctic -- Article -- Aspergillus fumigatus -- Aspergillus niger -- Bacilli -- Bacillus cereus -- Bacillus pumilus -- bacterial gene -- bacterium isolate -- biodegradability -- biodegradation -- biomass -- Chryseobacterium ioostei -- colony forming unit -- community structure -- concentration (parameter) -- cryogenic soil -- crystallization -- Cupriavidus necator -- ecosystem -- Escherichia coli -- Flavobacteria -- Flavobacterium -- fungal community -- fungal gene -- Fusarium fujikuroi -- Gammaproteobacteria -- green chemistry -- Lactobacterium helveticus -- metabolism -- microbial biomass -- microbial community -- molecular weight -- Mortierella alpina -- Mycobacterium -- Mycobacterium pseudoshotsii -- Nocardioides -- nucleotide sequence -- nucleotide sequence -- Paenibacillus -- Paraburkholderia -- Penicillium -- Penicillium arenicola -- Penicillium glabrum -- Penicillium lanosum -- Penicillium restrictum -- Penicillium spinulosum -- Penicillium thomii -- phylogeny -- Pseudomonas -- Rhizopus oryzae -- Rhodococcus -- RNA sequence -- Russian Federation -- soil -- soil microflora -- soil temperature -- species composition -- Stenotrophomonas -- Streptomyces -- Streptomyces prunicolor -- surface property -- temperature dependence -- thawing -- Variovorax paradoxus -- zpseudomonas lutea -- Siberia -- Aspergillus fumigatus -- Bacillus pumilus -- Bacteria (microorganisms) -- Fungi -- Penicillium thomii -- Pseudomonas sp. -- Rhodococcus sp. -- Stenotrophomonas rhizophila -- Streptomyces prunicolor -- Variovorax paradoxus
Аннотация: The present study investigates, for the first time, the structure of the microbial community of cryogenic soils in the subarctic region of Siberia and the ability of the soil microbial community to metabolize degradable microbial bioplastic – poly-3-hydroxybutyrate [P(3HB)]. When the soil thawed, with the soil temperature between 5-7 and 9–11 °C, the total biomass of microorganisms at a 10-20-cm depth was 226–234 mg g?1 soil and CO2 production was 20–46 mg g?1 day?1. The total abundance of microscopic fungi varied between (7.4 ± 2.3) ? 103 and (18.3 ± 2.2) ? 103 CFU/g soil depending on temperature; the abundance of bacteria was several orders of magnitude greater: (1.6 ± 0.1) ? 106 CFU g?1 soil. The microbial community in the biofilm formed on the surface of P(3HB) films differed from the background soil in concentrations and composition of microorganisms. The activity of microorganisms caused changes in the surface microstructure of polymer films, a decrease in molecular weight, and an increase in the degree of crystallinity of P(3HB), indicating polymer biodegradation due to metabolic activity of microorganisms. The clear-zone technique – plating of isolates on the mineral agar with polymer as sole carbon source – was used to identify P(3HB)-degrading microorganisms inhabiting cryogenic soil in Evenkia. Analysis of nucleotide sequences of rRNA genes was performed to identify the following P(3HB)-degrading species: Bacillus pumilus, Paraburkholderia sp., Pseudomonas sp., Rhodococcus sp., Stenotrophomonas rhizophila, Streptomyces prunicolor, and Variovorax paradoxus bacteria and the Penicillium thomii, P. arenicola, P. lanosum, Aspergillus fumigatus, and A. niger fungi. © 2020 Elsevier Ltd

Scopus
Держатели документа:
Siberian Federal University, 79 Svobodny Pr, Krasnoyarsk, 660041, Russian Federation
V.N. Sukachev Institute of Forest, Federal Research Center “Krasnoyarsk Science Center SB RAS”, 50/28 Akademgorodok, Krasnoyarsk, 660036, Russian Federation
Institute of Biophysics SB RAS, Federal Research Center “Krasnoyarsk Science Center SB RAS”, 50/50 Akademgorodok, Krasnoyarsk, 660036, Russian Federation
Melnikov Permafrost Institute, SB RAS, 36 Merzlotnaya St., Yakutsk, 677010, Russian Federation

Доп.точки доступа:
Prudnikova, S. V.; Evgrafova, S. Y.; Volova, T. G.

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Metabolic activity of cryogenic soils in the subarctic zone of Siberia towards "green" bioplastics / S. V. Prudnikova, S. Y. Evgrafova, T. G. Volova // Chemosphere. - 2021. - Vol. 263. - Ст. 128180, DOI 10.1016/j.chemosphere.2020.128180. - Cited References:101. - This study (polymer synthesis and investigation) was financially supported by Project "Agropreparations of the new generation: a strategy of construction and realization" (Agreement No 074-02-2018-328) in accordance with Resolution No 220 of the Government of the Russian Federation of April 9, 2010, "On measures designed to attract leading scientists to the Russian institutions of higher learning", and by the State assignment of the Ministry of Science and Higher Education of the Russian Federation No. FSRZ-2020-0006 (investigation of polymer degradation in soils of Evenkia). . - ISSN 0045-6535. - ISSN 1879-1298

РУБ Environmental Sciences

Кл.слова (ненормированные):
Siberian cryogenic soils -- P(3HB) bioplastic -- metabolic activity -- structure of microbial community -- P(3HB)-degrading strains -- P(3HB) -- properties
Аннотация: The present study investigates, for the first time, the structure of the microbial community of cryogenic soils in the subarctic region of Siberia and the ability of the soil microbial community to metabolize degradable microbial bioplastic - poly-3-hydroxybutyrate [P(3HB)]. When the soil thawed, with the soil temperature between 5-7 and 9-11 degrees C, the total biomass of microorganisms at a 10-20-cm depth was 226-234 mg g(-1) soil and CO2 production was 20-46 mg g(-1)W day(-1). The total abundance of microscopic fungi varied between (7.4 +/- 2.3) x 10(3) and (18.3 +/- 2.2) x 10(3) CFU/g soil depending on temperature; the abundance of bacteria was several orders of magnitude greater: (1.6 +/- 0.1) x 10(6) CFU g(-1) soil. The microbial community in the biofilm formed on the surface of P(3HB) films differed from the background soil in concentrations and composition of microorganisms. The activity of microorganisms caused changes in the surface microstructure of polymer films, a decrease in molecular weight, and an increase in the degree of crystallinity of P(3HB), indicating polymer biodegradation due to metabolic activity of microorganisms. The clear-zone technique e plating of isolates on the mineral agar with polymer as sole carbon source e was used to identify P(3HB)-degrading microorganisms inhabiting cryogenic soil in Evenkia. Analysis of nucleotide sequences of rRNA genes was performed to identify the following P(3HB)degrading species: Bacillus pumilus, Paraburkholderia sp., Pseudomonas sp., Rhodococcus sp., Stenotrophomonas rhizophila, Streptomyces prunicolor, and Variovorax paradoxus bacteria and the Penicillium thomii, P. arenicola, P. lanosum, Aspergillus fumigatus, and A. niger fungi. (C) 2020 Elsevier Ltd. All rights reserved.

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Держатели документа:
Siberian Fed Univ, 79 Svobodny Pr, Krasnoyarsk 660041, Russia.
Krasnoyarsk Sci Ctr SB RAS, Fed Res Ctr, VN Sukachev Inst Forest, 50-28 Akademgorodok, Krasnoyarsk 660036, Russia.
Krasnoyarsk Sci Ctr SB RAS, Fed Res Ctr, Inst Biophys SB RAS, 50-50 Akademgorodok, Krasnoyarsk 660036, Russia.
SB RAS, Melnikov Permafrost Inst, 36 Merzlotnaya St, Yakutsk 677010, Russia.

Доп.точки доступа:
Prudnikova, Svetlana, V; Evgrafova, Svetlana Yu; Volova, Tatiana G.; Project "Agropreparations of the new generation: a strategy of construction and realization" [074-02-2018-328]; Government of the Russian Federation [220]; Ministry of Science and Higher Education of the Russian Federation [FSRZ-2020-0006]

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Specific Features of the Macrozoobenthic Communities of Small Arctic Lakes in Eurasia / M. V. Chertoprud, S. V. Krylenko, A. I. Lukinych [et al.] // Inland Water Biol. - 2021. - Vol. 14, Is. 4. - P401-414, DOI 10.1134/S1995082921030056. - Cited References:58. - The primary processing of the material and statistical analysis of the data were carried out with financial support from the Russian Foundation for Basic Research (project No. 20-04-00145). Field works on Kolguev Island were sup-ported by the Meeresenten project (Bundesamt fur Naturschutz, BfN; online ID 100308472), the Federal Agency for Nature Protection of Germany (Conservation Bundesamtfur Naturschutz, BfN), grant MEERESENTEN (3516821500), and State assignment.AAAA-A19119021990093-8; works on Svalbard were funded by the Norwegian Institute for Nature Research (NINA) and Research Council of Norway, projects no. 227024 and 246726. Research on the Putorana Plateau was supported by a state task as part of the Basic Research Program of the Russian Federation, topic no. 51.1.1, and the State Assignment of the Ministry of Science and Higher Education of the Russian Federation to the Siberian Federal University, project no. FSRZ-2020-0006. . - ISSN 1995-0829. - ISSN 1995-0837

РУБ Marine & Freshwater Biology
Рубрики:
WATER BODIES
   ECOSYSTEMS
   ZOOBENTHOS
   RECOVERY
   SVALBARD
   IMPACT
   PONDS
Кл.слова (ненормированные):
small lakes -- Arctic -- subarctic -- Putorana Plateau -- Kolguev Island -- Svalbard -- macrozoobenthos -- community structure
Аннотация: The taxonomic structure, typology, species richness, and total abundance of bentic and littoral macroinvertebrate communities from small lakes of the Arctic and Subarctic zones are considered on the basis of original data from three northern Palearctic regions (the foot of the Putorana Plateau, Kolguev Island, and Western Svalbard Island). A comparative analysis of the communities of these regions has been carried out. The features of High Arctic insular, Low Arctic, subarctic, and boreal lake communities are discussed using a large volume of literature data. The complex pattern of changes in the total benthos biomass of small lakes has been revealed: it decreases in the subarctic taiga, increases in the hypoarctic tundra, and decreases again in the High Arctic.

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Держатели документа:
Moscow MV Lomonosov State Univ, Moscow, Russia.
Russian Acad Sci, Inst Geog, Moscow, Russia.
Russian Acad Sci, Inst Biophys, Siberian Branch, Krasnoyarsk Sci Ctr, Krasnoyarsk, Russia.
Siberian Fed Univ, Krasnoyarsk, Russia.
Russian Acad Sci, Severtsov Inst Ecol & Evolut, Moscow, Russia.

Доп.точки доступа:
Chertoprud, M. V.; Krylenko, S. V.; Lukinych, A. I.; Glazov, P. M.; Dubovskaya, O. P.; Chertoprud, E. S.; Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR) [20-04-00145]; Meeresenten project (Bundesamt fur Naturschutz, BfN) [100308472]; Federal Agency for Nature Protection of Germany (Conservation Bundesamtfur Naturschutz, BfN), grant MEERESENTEN [3516821500]; Norwegian Institute for Nature Research (NINA); Research Council of NorwayResearch Council of Norway [227024, 246726]; Basic Research Program of the Russian Federation [51.1.1]; Ministry of Science and Higher Education of the Russian Federation to the Siberian Federal University [FSRZ-2020-0006]; [AAAA-A19119021990093-8]

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Structure of microbial communities of peat soils in two bogs in Siberian tundra and forest zones / I. D. Grodnitskaya [et al.] // Microbiology. - 2018. - Vol. 87, Is. 1. - P89-102, DOI 10.1134/S0026261718010083 . - ISSN 0026-2617
Кл.слова (ненормированные):
16S rRNA gene -- bacterial diversity -- CH4 and CO2 emission -- cryogenic conditions -- methanogenesis -- methanotrophy -- microbial biomass and chemoorganotroph respiration -- oligo-mesotrophic and polygonal bogs -- permafrost -- subarctic tundra
Аннотация: The structure and functional activity of microbial complexes of a forest oligo-mesotrophic subshrub- grass-moss bog (OMB, Central Evenkiya) and a subshrub-sedge bog in the polygonal tundra (PB, Lena River Delta Samoylovsky Island) was studied. Soil of the forest bog (OMB) differed from that of the polygonal tundra bog (PB) in higher productivity (Corg, Ntotal, P, and K reserves), higher biomass of aerobic chemoorganotrophs (2.0 to 2.6 times), and twice the level of available organic matter. The contribution of microorganisms to the carbon pool was different, with the share of Cmic in Corg 1.4 to 2.5 times higher in PB compared to OMB. Qualitative composition of the methane cycle microorganisms in PB and OMB soils differed significantly. Methanogenic archaea (Euryarchaeota) in the shrub-sedge PB of tundra were more numerous and diverse than in the oligo-mesotrophic bog (OMB) and belonged to six families (Methanomassiliicoccaceae, Methanoregulaceae, Methanobacteriaceae, Methanomicrobiaceaee, Methanosarcinaceae, and Methanotrichaceae), while members of only four families (Methanosarcinacea, Methanobacteriaceae, Methanotrichaceae, and Methanomassiliicoccaceae) were revealed in OMB. In both bogs, methane-oxidizing bacteria belonged to Alphaproteobacteria (II) and Gammaproteobacteria (I). Methanotroph diversity was higher in OMB than in PB. Microbial communities of PB soils had higher potential activity of methanogenesis and methanotrophy compared to those of OMB. Methanogenic and methanotrophic activities in PB were 20 and 2.3 times higher, respectively, than in OMB. © 2018, Pleiades Publishing, Ltd.

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Держатели документа:
Sukachev Institute of Forest, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Russian Federation
Institute of Biophysics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Russian Federation
Information and Methodical Center for Expertise, Accounting, and Analysis of Rotation of Medical Agents, Kranoyarsk, Russian Federation
Roche Diagnostika Rus, Moscow, Russian Federation

Доп.точки доступа:
Grodnitskaya, I. D.; Trusova, M. Y.; Syrtsov, S. N.; Koroban, N. V.

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Fatty Acid Composition and Contents of Seven Commercial Fish Species of Genus Coregonus from Russian Subarctic Water Bodies / M. I. Gladyshev [et al.] // Lipids. - 2017. - Vol. 52, Is. 12. - P1033-1044, DOI 10.1007/s11745-017-4304-8. - Cited References:76. - The work was supported by Grant of Russian Science Foundation No. 16-14-10001. We are grateful to Ya. I. Alekseeva, V. S. Artamonova, I. L. Schurov, V. A. Shirokov for their kind help in sample collecting. . - ISSN 0024-4201. - ISSN 1558-9307

РУБ Biochemistry & Molecular Biology + Nutrition & Dietetics
Рубрики:
SALMON SALMO-SALAR
   FRESH-WATER
   DOCOSAHEXAENOIC ACIDS
   KRASNOYARSK
Кл.слова (ненормированные):
Eicosapentaenoic acid -- Docosahexaenoic acid -- Anadromous fish -- Freshwater -- fish -- Planktivory -- Benthivory
Аннотация: In several Russian northern lakes and rivers, Arctic cisco Coregonus autumnalis, least cisco C. sardinella, peled C. peled, tugun C. tugun, broad whitefish C. nasus, whitefish C. lavaretus and vendace C. albula were sampled in periods of officially permitted commercial fishery. Special attention was paid to contents (mg g(-1) of wet weight) of eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) in muscle tissues (filets), which are essential for human nutrition. The highest values of EPA + DHA content in semi-anadromous fish and freshwater fish were recorded for C. autumnalis from the Yenisei River, 17.60 mg g(-1) wet weight, and for C. lavaretus from the Sobachye Lake, 16.61 mg g(-1) wet weight, respectively. Intra-genus variations of EPA + DHA contents of Coregonus species were from 1.87 to 17.60 mg g(-1) wet weight. Since the congeneric species were genetically close to each other, the variations in EPA and DHA contents were thought to be caused primarily by ecological factors: migrational capability, type of feeding and trophic status of aquatic ecosystems. In general, the majority of studied species appeared to be of a high nutritive value for humans, although unfavorable environmental conditions could considerably diminish this value.

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Держатели документа:
Russian Acad Sci, Krasnoyarsk Sci Ctr, Fed Res Ctr, Inst Biophys,Siberian Branch, Akademgorodok 50-50, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Svobodny Av 79, Krasnoyarsk 660041, Russia.
Russian Acad Sci, AN Severtsov Inst Ecol & Evolut, Leninsky Prospect 33, Moscow 119071, Russia.
Russian Acad Sci, Inst Biol Inland Waters, Borok 152742, Yaroslavl Regio, Russia.

Доп.точки доступа:
Gladyshev, Michail I.; Sushchik, Nadezhda N.; Makhutova, Olesia N.; Glushchenko, Larisa A.; Rudchenko, Anastasia E.; Makhrov, Alexander A.; Borovikova, Elena A.; Dgebuadze, Yury Y.; Russian Science Foundation [16-14-10001]

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Experimental modeling of the influence of the rise in average summer temperatures on carbon circulation in tundra ecosystems / Y. V. Barkhatov [et al.] // Dokl. Earth Sci. - 2016. - Vol. 471, Is. 1. - P1168-1170, DOI 10.1134/S1028334X16110106 . - ISSN 1028-334X
Кл.слова (ненормированные):
Carbon dioxide -- Ecology -- Landforms -- Carbon fluxes -- Climate condition -- Comparative evaluations -- Experimental modeling -- Physical simulation -- Soil respiration -- Summer temperature -- Temperature rise -- Ecosystems
Аннотация: A sealed vegetation chamber was designed and constructed for physical simulation of climate conditions in the Subarctic zone during the spring–summer time. The small laboratory tundra-simulating ecosystem (TSE) was created for comparative evaluation of the rates of soil respiration and of the total balance of carbon fluxes in tundra ecosystems. The test experiment was performed to study the TSE response to a temperature rise in air and soil by 2°C in terms of the intensity of the СО2 flux. It was shown that this increase in temperature would cause a pronounced shift in the balance of СО2 production and utilization in the ecosystem from near-zero values to a stable generation of 24 ?mol/h of CO2 per 1 kg of dry biomass. © 2016, Pleiades Publishing, Ltd.

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Держатели документа:
Institute of Biophysics, Siberian Branch, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Barkhatov, Y. V.; Tikhomirov, A. A.; Ushakova, S. A.; Shikhov, V. N.; Bartsev, S. I.; Degermendzhi, A. G.

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