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Microbial degradation of polyhydroxyalkanoates in tropical soils / A. N. Boyandin [et al.] // International Biodeterioration and Biodegradation. - 2013. - Vol. 83. - P77-84, DOI 10.1016/j.ibiod.2013.04.014 . - ISSN 0964-8305
Кл.слова (ненормированные):
Biopolymer properties -- Biopolymers -- PHA degrading microorganisms -- Polyhydroxyalkanoates (PHAs) -- Soil biodegradation -- 3-hydroxybutyric acid -- Degree of crystallinity -- Hydroxyalkanoic acids -- Microbial characteristics -- Microbial degradation -- Polyhydroxyalkanoates -- Polymer molecular mass -- Soil biodegradations -- Bacteriology -- Biomolecules -- Biopolymers -- Microorganisms -- Soils -- Tropics -- Biodegradation -- biodegradation -- chemical composition -- microbial activity -- microbial community -- molecular analysis -- organic compound -- polymer -- soil degradation -- soil microorganism -- tropical soil
Аннотация: The integrated study addressing biodegradation of microbial linear polyesters of hydroxyalkanoic acids (polyhydroxyalkanoates, PHAs) in tropical conditions by microbial communities of Vietnamese soils was performed in locations close to Hanoi and Nha Trang, which differed in their weather conditions and microbial communities. It shows that PHA degradation in tropical soils is influenced by polymer chemical composition, specimen shape, and microbial characteristics. The homopolymer of 3-hydroxybutyric acid is degraded at higher rates than the copolymer of 3-hydroxybutyric and 3-hydroxyvaleric acids. The average rates of mass loss were 0.04-0.33% per day for films and 0.02-0.18% for compact pellets. PHA degradation was accompanied by a decrease in the polymer molecular mass and, usually, an increase in the degree of crystallinity, suggesting preferential degradation of the amorphous phase. Under the study conditions, representatives of the bacterial genera Burkholderia, Bacillus, Cupriavidus, Mycobacterium, and Nocardiopsis and such micromycetes as Acremonium, Gongronella, Paecilomyces, and Penicillium, Trichoderma have been identified as major PHA degraders. В© 2013 Elsevier Ltd.

Scopus
Держатели документа:
Institute of Biophysics of Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Russian Federation
Siberian Federal University, Krasnoyarsk, Russian Federation
A.N. Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences, Moscow, Russian Federation
The Joint Russian-Vietnam Tropical Research and Test Center, Hanoi, Viet Nam
Inst. of Chemical Biology and Fundamental Medicine, Siberian Branch of Russian Academy of Sciences, Novosibirsk, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Boyandin, A.N.; Prudnikova, S.V.; Karpov, V.A.; Ivonin, V.N.; D?, N.L.; Nguy?n, T.H.; Le, T.M.H.; Filichev, N.L.; Levin, A.L.; Filipenko, M.L.; Volova, T.G.; Gitelson, I.I.

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Biodegradation of polyhydroxyalkanoate films in natural environments / A. N. Boyandin [et al.] // Macromolecular Symposia. - 2012. - Vol. 320, Is. 1. - P38-42, DOI 10.1002/masy.201251004 . - ISSN 1022-1360
Кл.слова (ненормированные):
biodegradation -- biopolymers -- microbial degradation -- polyhydroxyalkanoates -- Acinetobacters -- Acremonium -- Alcaligenes -- Burkholderia -- Degradation rate -- Degrading activities -- Degrading bacteria -- Enterobacter -- Hydroxyvalerate -- Mass loss -- Microbial degradation -- Micromycetes -- Natural environments -- Paecilomyces -- Poly-3-hydroxybutyrate -- Poly-hydroxyalkanoate -- Polyhydroxyalkanoates -- SIBERIA -- South China sea -- Stenotrophomonas -- Trichoderma -- Tropical soils -- Viet Nam -- Xanthomonas -- Bacteria -- Bacteriology -- Biopolymers -- Degradation -- Seawater -- Soils -- Tropics -- Biodegradation
Аннотация: Biodegradation of film specimens from polyhydroxyalkanoates (PHAs) of two types - poly-3-hydroxybutyrate (PHB) and poly-3-hydroxybutyrate-co-3- hydroxyvalerate (PHBV) - was analysed in different environments: tropical sea waters of the South China Sea (Nha Trang, Vietnam) and soils in the environs of Hanoi (Vietnam), Nha Trang (Vietnam) and Krasnoyarsk (Siberia, Russia). In seawater, the mass loss of the specimens of both types was almost equal. However, in tropical soils, PHB degraded quicker than PHBV. In the Siberian soil, the degradation rate of the PHBV was generally higher than that of PHBV. Analysis of molecular mass of PHA specimens showed its decreasing during biodegradation. In the tropical sea conditions, PHA degrading microorganisms were represented by bacteria of Enterobacter, Bacillus and Gracilibacillus genera. Among PHA degrading bacteria, Burkholderia, Alcaligenes, Bacillus, Mycobacterium and Streptomyces genera were identified in Vietnamese soils, and Variovorax, Stenotrophomonas, Acinetobacter, Pseudomonas, Bacillus and Xanthomonas genera in Siberian soils. Micromycetes of Gongronella, Paecilomyces, Penicillium and Trichoderma genera exhibited PHA degrading activity in Vietnamese soils, and Paecilomyces, Penicillium, Acremonium, Verticillium and Zygosporium genera - in Siberian soils. Copyright В© 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Scopus
Держатели документа:
Institute of Biophysics, SB RAS, 50/50 Akademgorodok, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, 79 Svobodnyi Av., Krasnoyarsk, 660041, Russian Federation
Joint Vietnam-Russian Tropical Research and Technological Centre, Nguyen Van Huyen, Nghia Do, Cau Giay, Hanoi, Viet Nam
Institute of Chemical Biology and Fundamental Medicine, SB RAS, 8 Lavrentiev Ave., Novosibirsk, 630090, Russian Federation
Massachusetts Institute of Technology, Cambridge, MA 02139, United States : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Boyandin, A.N.; Rudnev, V.P.; Ivonin, V.N.; Prudnikova, S.V.; Korobikhina, K.I.; Filipenko, M.L.; Volova, T.G.; Sinskey, A.J.

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Testing soil-like substrate for growing plants in bioregenerative life support systems / J. B. Gros [et al.] // Advances in Space Research. - 2005. - Vol. 36, Is. 7. - P1312-1318, DOI 10.1016/j.asr.2005.05.079 . - ISSN 0273-1177
Кл.слова (ненормированные):
Life support system -- Matter recycling -- Plants -- Soil-like substrate -- Biodiversity -- Correlation methods -- Growth kinetics -- Hormones -- Plants (botany) -- Recycling -- Soils -- Bioregeneration -- Life support system -- Matter recycling -- Soil-like substrate -- Space research
Аннотация: We studied soil-like substrate (SLS) as a potential candidate for plant cultivation in bioregenerative life support systems (BLSS). The SLS was obtained by successive conversion of wheat straw by oyster mushrooms and worms. Mature SLS contained 9.5% humic acids and 4.9% fulvic acids. First, it was shown that wheat, bean and cucumber yields as well as radish yields when cultivated on mature SLS were comparable to yields obtained on a neutral substrate (expanded clay aggregate) under hydroponics. Second, the possibility of increasing wheat and radish yields on the SLS was assessed at three levels of light intensity: 690, 920 and 1150 ?mol m-2 s-1 of photosynthetically active radiation (PAR). The highest wheat yield was obtained at 920 ?mol m-2 s-1, while radish yield increased steadily with increasing light intensity. Third, long-term SLS fertility was tested in a BLSS model with mineral and organic matter recycling. Eight cycles of wheat and 13 cycles of radish cultivation were carried out on the SLS in the experimental system. Correlation coefficients between SLS nitrogen content and total wheat biomass and grain yield were 0.92 and 0.97, respectively, and correlation coefficients between nitrogen content and total radish biomass and edible root yield were 0.88 and 0.87, respectively. Changes in hormone content (auxins, gibberellins, cytokinins and abscisic acid) in the SLS during matter recycling did not reduce plant productivity. Quantitative and species compositions of the SLS and irrigation water microflora were also investigated. Microbial community analysis of the SLS showed bacteria from Bacillus, Pseudomonas, Proteus, Nocardia, Mycobacterium, Arthrobacter and Enterobacter genera, and fungi from Trichoderma, Penicillium, Fusarium, Aspergillus, Mucor, Botrytis, and Cladosporium genera. В© 2005 COSPAR. Published by Elsevier Ltd. All rights reserved.

Scopus
Держатели документа:
LGCB, Universite B. Pascal, CUST, BP206, 63174 Aubiere cedex, France
Environmental Control and Life Support Section, ESA-Estec, Postbus 299, 2200 AG, Noordwijk, Netherlands
Institute of Biophysics (Russian Academy of Sciences, Siberian Branch), Academgorodok, Krasnoyarsk 660036, Russian Federation
Department of Plant Physiology and Biotechnology, Tomsk State University, Lenin av. 36, Tomsk 634050, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Gros, J.B.; Lasseur, Ch.; Tikhomirov, A.A.; Manukovsky, N.S.; Kovalev, V.S.; Ushakova, S.A.; Zolotukhin, I.G.; Tirranen, L.S.; Karnachuk, R.A.; Dorofeev, V.Yu.

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Psychrophilic and psychrotolerant heterotrophic microorganisms of Middle Siberian karst cavities / S. V. Khizhnyak [et al.] // Russian Journal of Ecology. - 2003. - Vol. 34, Is. 4. - P231-235, DOI 10.1023/A:1024537513439 . - ISSN 1067-4136
Кл.слова (ненормированные):
Caves -- Heterotrophic microorganisms -- Karst cavities -- Psychorophilic and psychrotolerant microorganisms -- bacterium -- cavernicolous species -- fungus -- heterotrophy -- karst -- low temperature -- Russian Federation -- Arthrobacter -- Bacteria (microorganisms) -- Chrysosporium -- Corynebacteriaceae -- Fungi -- Mucor -- Penicillium -- Pseudomonas
Аннотация: The natural microflora of Middle Siberian karst cavities, which comprises psychrotolerant bacteria and fungi capable of growing at 3-15 and 3...+28В°C, respectively, has been studied. Bacteria are ubiquitous in caves, their count varying from 103 to 107 cells/g ground. The bacteria have been identified as Pseudomonas, Arthrobacter, Bacillus, and coryneform bacteria. Fungi have been found in places exposed to increased anthropogenic impact, their count being as large as 106 to 107 cells/g ground. Mucor, Penicillium, and Chrysosporium were dominant fungal genera.

Scopus
Держатели документа:
Krasnoyarsk State Agrarian Univ., Pr. Mira 88, Krasnoyarsk 660001, Russian Federation
Institute of Biophysics, Siberian Division, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk 660036, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Khizhnyak, S.V.; Tausheva, I.V.; Berezikova, A.A.; Nesterenko, E.V.; Rogozin, D.Yu.

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^a621.99.29^2VINITI
П 86

Психрофильные и психротолерантные гетеротрофные микроорганизмы карстовых полостей Средней Сибири [Текст] : научное издание / С. В. Хижняк [и др.] // Экология. - 2003. - N 4. - С. 261-266 . - ISSN 0367-0597

ГРНТИ

62.99.29

РУБ 621.99.29
Рубрики:
ПСИХРОФИЛЬНЫЕ МИКРООРГАНИЗМЫ
   ПСИХРОТОЛЕРАНТНЫЕ МИКРООРГАНИЗМЫ
   ЧИСЛЕННОСТЬ
   ИДЕНТИФИКАЦИЯ
   ПОДЗЕМНЫЕ ЭКОСИСТЕМЫ
   ПЕЩЕРЫ
Аннотация: Исследовали естественную микрофлору карстовых полостей Средней Сибири, представленную психрофильными и психротолерантными бактериями и грибами, способными к росту при т-ре +3...+15'ГРАДУС'C и +3...+28'ГРАДУС'C соответственно. Бактерии в пещерах распространены повсеместно, их численность колеблется от 10{3} до 10{7} клеток/г грунта. Идентификация показала наличие родов Pseudomonas, Arthrobacter, Bacillus и коринебактерий. Грибы встречаются в местах с повышенной антропогенной нагрузкой, их численность достигает 10{6}-10{7} колониеобразующих единиц/г грунта. Среди грибов доминируют представители родов Mucor, Penicillium, Chrysosporium. Россия, Красноярский гос. аграрный ун-т, Красноярск. Библ. 12
: 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Хижняк, С.В.; Таушева, И.В.; Березикова, А.А.; Нестеренко, Е.В.; Рогозин, Д.Ю.

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Microbial degradation of polyhydroxyalkanoates in tropical soils / A. N. Boyandin [et al.] // Int. Biodeterior. Biodegrad. - 2013. - Vol. 83. - P77-84, DOI 10.1016/j.ibiod.2013.04.014. - Cited References: 74. - This study was financially supported by Project "Biotechnologies of novel biomaterials" (Agreement No. 11.G34.31.0013) 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". . - 8. - ISSN 0964-8305

РУБ Biotechnology & Applied Microbiology + Environmental Sciences
Рубрики:
POLY-BETA-HYDROXYBUTYRATE
   CHAIN-LENGTH POLYHYDROXYALKANOATES
   POLY(3-HYDROXYBUTYRATE) DEPOLYMERASE
   COASTAL WATERS
   PHA FILMS
   BIODEGRADATION
   BACTERIA
   IDENTIFICATION
   POLYESTERS
   POLY(3-HYDROXYBUTYRATE-CO-3-HYDROXYVALERATE)
Кл.слова (ненормированные):
Polyhydroxyalkanoates (PHAs) -- Biopolymers -- Biopolymer properties -- Soil biodegradation -- PHA degrading microorganisms
Аннотация: The integrated study addressing biodegradation of microbial linear polyesters of hydroxyalkanoic acids (polyhydroxyalkanoates, PHAs) in tropical conditions by microbial communities of Vietnamese soils was performed in locations close to Hanoi and Nha Trang, which differed in their weather conditions and microbial communities. It shows that PHA degradation in tropical soils is influenced by polymer chemical composition, specimen shape, and microbial characteristics. The homopolymer of 3-hydroxybutyric acid is degraded at higher rates than the copolymer of 3-hydroxybutyric and 3-hydroxyvaleric acids. The average rates of mass loss were 0.04-0.33% per day for films and 0.02-0.18% for compact pellets. PHA degradation was accompanied by a decrease in the polymer molecular mass and, usually, an increase in the degree of crystallinity, suggesting preferential degradation of the amorphous phase. Under the study conditions, representatives of the bacterial genera Burkholderia, Bacillus, Cupriavidus, Mycobacterium, and Nocardiopsis and such micromycetes as Acremonium, Gongronella, Paecilomyces, and Penicillium, Trichoderma have been identified as major PHA degraders. (C) 2013 Elsevier Ltd. All rights reserved.

Держатели документа:
[Boyandin, Anatoly N.
Volova, Tatiana G.
Gitelson, Iosif I.] Russian Acad Sci, Inst Biophys, Siberian Branch, Krasnoyarsk, Russia
[Prudnikova, Svetlana V.
Volova, Tatiana G.] Siberian Fed Univ, Krasnoyarsk, Russia
[Karpov, Valery A.] Russian Acad Sci, AN Severtsov Inst Ecol & Evolut, Moscow, Russia
[Ivonin, Vladimir N.
Ngoc Lanh Do
Thi Hoai Nguyen
Thi My Hiep Le
Filichev, Nikolay L.
Levin, Alexander L.] Joint Russian Vietnam Trop Res & Test Ctr, Hanoi, Vietnam
[Filipenko, Maxim L.] Russian Acad Sci, Siberian Branch, Inst Chem Biol & Fundamental Med, Novosibirsk, Russia : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Boyandin, A.N.; Prudnikova, S.V.; Karpov, V.A.; Ivonin, V.N.; Do, N.L.; Nguyen, T.H.; Le, TMH; Filichev, N.L.; Levin, A.L.; Filipenko, M.L.; Volova, T.G.; Gitelson, I.I.

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Biodegradation of polyhydroxyalkanoates by soil microbial communities of different structures and detection of PHA degrading microorganisms [Text] / A. N. Boyandin [et al.] // Appl. Biochem. Microbiol. - 2012. - Vol. 48, Is. 1. - P28-36, DOI 10.1134/S0003683812010024. - Cited References: 39. - The work was supported by the project initiated by the Government of the Russian Federation for governmental support of scientific research conducted under the guidance of leading scientists at Russian institutions of higher learning (Agreement No. 11.G34.31.0013) and the Program of Integrated Research of the Presidium of the Siberian Branch of Russian Academy of Sciences (project no. 96). . - 9. - ISSN 0003-6838

РУБ Biotechnology & Applied Microbiology + Microbiology
Рубрики:
POLY-BETA-HYDROXYBUTYRATE
   CHAIN-LENGTH POLYHYDROXYALKANOATES
   DEGRADATION
   FILMS
   POLY(3-HYDROXYBUTYRATE-CO-3-HYDROXYVALERATE)
   BACTERIA
   ACID
Аннотация: Biodegradation of microbial linear polymers of hydroxyalkanoic acids (polyhydroxyalkanoates, PHAs) by soil microbial communities of different structures has been studied during two field seasons in different weather conditions. This process was shown to be influenced by the polymer chemical composition, temperature, humidity, and the microbial soil component. The PHA degradation was accompanied by a decrease in the polymer molecular weight and an increase in the degree of crystallinity, indicating the preferential destruction of the amorphous phase compared to the crystalline one. The quantity of the true PHA destructors developing at the surface of the polymer samples was lower than the quantity of accompanying bacteria. The dominant PHA degrading microorganisms under the test conditions were identified as bacteria of the genera Variovorax, Stenotrophomonas, Acinetobacter, Pseudomonas, Bacillus, and Xanthomonas and as micromycetes from Penicillium, Paecilomyces, Acremonium, Verticillium, and Zygosporium.

WOS,
SCOPUS,
Полный текст на сайте издателя
Держатели документа:
[Boyandin, A. N.
Volova, T. G.] Russian Acad Sci, Inst Biophys, Siberian Branch, Krasnoyarsk 660036, Russia
[Prudnikova, S. V.] Siberian Fed Univ, Krasnoyarsk 660041, Russia
[Filipenko, M. L.
Khrapov, E. A.] Russian Acad Sci, Siberian Branch, Inst Chem Biol & Fundamental Med, Novosibirsk 630090, Russia
[Vasil'ev, A. D.] Russian Acad Sci, Siberian Branch, Kirenskii Inst Phys, Krasnoyarsk 660036, Russia : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Boyandin, A. N.; Prudnikova, S.V.; Filipenko, M.L.; Khrapov, E.A.; Vasiliev, A. D.; Васильев, Александр Дмитриевич; Volova, Tatiana G.; Волова, Татьяна Григорьевна; Government of the Russian Federation [11.G34.31.0013]; Presidium of the Siberian Branch of Russian Academy of Sciences [96]

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Psychrophilic and psychrotolerant heterotrophic microorganisms of Middle Siberian karst cavities [Text] / S. V. Khizhnyak [et al.] // Russ. J. Ecol. - 2003. - Vol. 34, Is. 4. - P. 231-235, DOI 10.1023/A:1024537513439. - Cited References: 12 . - ISSN 1067-4136

РУБ Ecology

Кл.слова (ненормированные):
psychrophilic and psychrotolerant microorganisms -- karst cavities -- caves -- heterotrophic microorganisms
Аннотация: The natural microflora of Middle Siberian karst cavities, which comprises psychrotolerant bacteria and fungi capable of growing at 3-15 and 3...+28degreesC, respectively, has been studied. Bacteria are ubiquitous in caves, their count varying from 10(3) to 10(7) cells/g ground. The bacteria have been identified as Pseudomonas, Arthrobacter, Bacillus, and coryneform bacteria. Fungi have been found in places exposed to increased anthropogenic impact, their count being as large as 10(6) to 10(7) cells/g ground. Mucor Penicillium, and Chrysosporium were dominant fungal genera.

WOS
Держатели документа:
Krasnoyarsk State Agrarian Univ, Krasnoyarsk 660001, Russia
Russian Acad Sci, Siberian Div, Inst Biophys, Krasnoyarsk 660036, Russia
ИБФ СО РАН : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Khizhnyak, S.V.; Tausheva, I.V.; Berezikova, A.A.; Nesterenko, E.V.; Rogozin, D.Y.

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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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10.

The effect of the pesticide delivery method on the microbial community of field soil / S. Prudnikova, N. Streltsova, T. Volova // Environ. Sci. Pollut. Res. - 2020, DOI 10.1007/s11356-020-11228-7 . - Article in press. - ISSN 0944-1344
Кл.слова (ненормированные):
Biodegradable polymer -- P(3HB)-degrading microorganisms -- Pesticides -- Poly-3-hydroxybutyrate -- Slow release formulations -- Soil microorganisms
Аннотация: The study deals with the effects of herbicides (metribuzin, tribenuron-methyl, fenoxaprop-P-ethyl) and fungicides (tebuconazole, epoxiconazole, azoxystrobin) applied to soil as free pesticides or as slow release formulations embedded in a biodegradable composite matrix on the structure of the soil microbial community. The matrix consisted of a natural biopolymer poly-3-hydroxybutyrate [P(3HB)] and a filler—one of the natural materials (peat, clay, and wood flour). The soil microbial community was characterized, including the major eco-trophic groups of bacteria, dominant taxa of bacteria and fungi, and primary P(3HB)-degrading microorganisms, such as Pseudomonas, Bacillus, Pseudarthrobacter, Streptomyces, Penicillium, and Talaromyces. The addition of free pesticides adversely affected the abundance of soil microorganisms; the decrease varied from 1.4 to 56.0 times for different types of pesticides. The slow release pesticide formulations, in contrast to the free pesticides, exerted a much weaker effect on soil microorganisms, no significant inhibition in the abundance of saprotrophic bacteria was observed, partly due to the positive effects of the composite matrix (polymer/natural material), which was a supplementary substrate for microorganisms. The slow release fungicide formulations, like the free fungicides, reduced the total abundance of fungi and inhibited the development of the phytopathogens Fusarium and Alternaria. Thus, slow release formulations of pesticides preserve the bioremediation potential of soil microorganisms, which are the main factor of removing xenobiotics from the biosphere. © 2020, Springer-Verlag GmbH Germany, part of Springer Nature.

Scopus
Держатели документа:
Siberian Federal University, 79 Svobodny pr, Krasnoyarsk, 660041, Russian Federation
Institute of Biophysics SB RAS, Federal Research Center “Krasnoyarsk Science Center SB RAS”, 50/50 Akademgorodok, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Prudnikova, S.; Streltsova, N.; Volova, T.

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11.

The effect of the pesticide delivery method on the microbial community of field soil / S. Prudnikova, N. Streltsova, T. Volova // Environ. Sci. Pollut. Res. - 2020, DOI 10.1007/s11356-020-11228-7. - Cited References:119. - This study was financially supported by the Ministry of Science and Higher Education of the Russian Federation, project "Agropreparations of the new generation: a strategy of construction and realization" (Agreement No 074-02-2018-328). . - Article in press. - ISSN 0944-1344. - ISSN 1614-7499

РУБ Environmental Sciences
Рубрики:
CONTROLLED-RELEASE
2,4-DICHLOROPHENOXYACETIC ACID
DEGRADATION
Кл.слова (ненормированные):
Soil microorganisms -- Pesticides -- Slow release formulations -- Biodegradable polymer -- Poly-3-hydroxybutyrate -- P(3HB)-degrading -- microorganisms
Аннотация: The study deals with the effects of herbicides (metribuzin, tribenuron-methyl, fenoxaprop-P-ethyl) and fungicides (tebuconazole, epoxiconazole, azoxystrobin) applied to soil as free pesticides or as slow release formulations embedded in a biodegradable composite matrix on the structure of the soil microbial community. The matrix consisted of a natural biopolymer poly-3-hydroxybutyrate [P(3HB)] and a filler-one of the natural materials (peat, clay, and wood flour). The soil microbial community was characterized, including the major eco-trophic groups of bacteria, dominant taxa of bacteria and fungi, and primary P(3HB)-degrading microorganisms, such asPseudomonas,Bacillus,Pseudarthrobacter,Streptomyces,Penicillium, andTalaromyces. The addition of free pesticides adversely affected the abundance of soil microorganisms; the decrease varied from 1.4 to 56.0 times for different types of pesticides. The slow release pesticide formulations, in contrast to the free pesticides, exerted a much weaker effect on soil microorganisms, no significant inhibition in the abundance of saprotrophic bacteria was observed, partly due to the positive effects of the composite matrix (polymer/natural material), which was a supplementary substrate for microorganisms. The slow release fungicide formulations, like the free fungicides, reduced the total abundance of fungi and inhibited the development of the phytopathogensFusariumandAlternaria. Thus, slow release formulations of pesticides preserve the bioremediation potential of soil microorganisms, which are the main factor of removing xenobiotics from the biosphere.

WOS
Держатели документа:
Siberian Fed Univ, 79 Svobodny Pr, Krasnoyarsk 660041, Russia.
Krasnoyarsk Sci Ctr SB RAS, Inst Biophys SB RAS, Fed Res Ctr, 50-50 Akademgorodok, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Prudnikova, Svetlana; Streltsova, Nadezhda; Volova, Tatiana; Ministry of Science and Higher Education of the Russian Federation, project "Agropreparations of the new generation: a strategy of construction and realization" [074-02-2018-328]

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12.

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.

WOS
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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