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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Volova T.G., Belyaeva O.G., Gitelzon I.I., Kalacheva G.S., Lukovenko S.G., Plotnikov V.F.
Заглавие : Obtain and research of microbial heteropolymeric polyhydroxyalkanoates
Место публикации : Dokl. Akad. Nauk: MEZHDUNARODNAYA KNIGA, 1996. - Vol. 347, Is. 2. - С. 256-258. - 3. - ISSN 0869-5652
Примечания : Cited References: 12
Предметные рубрики: PSEUDOMONAS
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Somova L.A., Pechurkin N.S., Polonsky V.I., Pisman T.I., Sarangova A.B., Andre M., Sadovskaya G.M.
Заглавие : Plants-rhizospheric organisms interaction in a manmade system with and without biogenous element limitation
Место публикации : Advances in Space Research. - 1997. - Vol. 20, Is. 10. - С. 1939-1943. - ISSN 02731177 (ISSN)
Ключевые слова (''Своб.индексиров.''): nitrogen--article--bacterial count--biomass--comparative study--culture medium--growth, development and aging--metabolism--microbiology--plant leaf--plant root--plant seed--pseudomonas fluorescens--pseudomonas putida--wheat--biomass--colony count, microbial--culture media--nitrogen--plant leaves--plant roots--pseudomonas fluorescens--pseudomonas putida--seeds--triticum
Аннотация: The effect has been studied of inoculation of seeds of wheat with two species of rhizospheric microorganisms, -Pseudomonas fluorescens and Pseudomonas putida - on young plant growth with complete and with nitrogen deficit mineral nutrition. With complete mineral medium, plants grown from seeds inoculated with bacteria of Pseudomonas genus (experiment plants) have been found to have better growth over plants not inoculated with these bacteria (control plants). The experiment plants had increased transpiration and their biomass had higher organic nitrogen content. With nitrogen deficit medium, the plants inoculated with bacteria and those without them, have not revealed changes in growth. Neither case demonstrated competition of microorganisms with plants for nitrogen sources. В© 1997 COSPAR. Published by Elsevier Science Ltd.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Pechurkin N.S., Somova L.A., Polonskii V.I., Pis'man T.I., Sarangova A.B., Polonskaya D.E., Sadovskaya G.M.
Заглавие : Influence of rhizosphere bacteria of the genus pseudomonas on the growth of wheat seedlings under conditions of complete mineral supply and nitrogen deficiency
Место публикации : Mikrobiologiya. - 1997. - Vol. 66, Is. 4. - С. 553-557. - ISSN 00263656 (ISSN)
Ключевые слова (''Своб.индексиров.''): biomass--growth--nitrogen--pseudomonas--transpiration--wheat
Аннотация: The influence of two rhizosphere bacteria-Pseudomonas fluorescens and Pseudomonas putidaon the growth of wheat seedlings was studied under conditions of complete mineral supply and nitrogen deficiency in the medium. On complete mineral medium, the plants that developed from the seeds inoculated with the pseudomonads had some advantages for growth over those developed from the non-inoculated seeds. Inoculated plants showed an increased transpiration and a higher content of organic nitrogen in their biomass. Under conditions of nitrogen deficiency in the medium, no differences were found between inoculated and noninoculated plants. No competition for the nitrogen sources was revealed between the bacteria and plants; the development of the rhizosphere bacteria was limited by the rate of organic compound excretion by plant roots. The stimulatory effect produced on plant growth by the rhizosphere bacteria was shown to vary depending on the environmental factors.
Scopus
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Pechurkin N.S., Somova L.A., Polonskii V.I., Pis'man T.I., Sarangova A.B., Polonskaya D.E., Sadovskaya G.M.
Заглавие : Influence of rhizosphere bacteria of the genus Pseudomonas on the growth of wheat seedlings under conditions of complete mineral supply and nitrogen deficiency
Место публикации : Microbiology. - 1997. - Vol. 66, Is. 4. - С. 461-465. - ISSN 00262617 (ISSN)
Ключевые слова (''Своб.индексиров.''): biomass--growth--nitrogen--pseudomonas--transpiration--wheat
Аннотация: The influence of two rhizosphere bacteria-Pseudomonas fluorescens and Pseudomonas putida -on the growth of wheat seedlings was studied under conditions of complete mineral supply and nitrogen deficiency in the medium. On complete mineral medium, the plants that developed from the seeds inoculated with the pseudomonads had some advantages for growth over those developed from the non-inoculated seeds. Inoculated plants showed an increased transpiration and a higher content of organic nitrogen in their biomass. Under conditions of nitrogen deficiency in the medium, no differences were found between inoculated and noninoculated plants. No competition for the nitrogen sources was revealed between the bacteria and plants; the development of the rhizosphere bacteria was limited by the rate of organic compound excretion by plant roots. The stimulatory effect produced on plant growth by the rhizosphere bacteria was shown to vary depending on the environmental factors. В© 1997 MAHK Hayka/Interperiodica Publishing.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Pechurkin N.S., Somova L.A., Polonskii V.I., Pisman T.I., Sarangova A.B., Polonskaya D.E., Sadovskaya G.M.
Заглавие : Influence of rhizosphere bacteria of the genus Pseudomonas on the growth of wheat seedlings under conditions of complete mineral supply and nitrogen deficiency
Колич.характеристики :5 с
Место публикации : Microbiology: MAIK NAUKA/INTERPERIODICA, 1997. - Vol. 66, Is. 4. - С. 461-465. - ISSN 0026-2617
Примечания : Cited References: 9
Ключевые слова (''Своб.индексиров.''): pseudomonas--wheat--nitrogen--growth--biomass--transpiration
Аннотация: The influence of two rhizosphere bacteria-Pseudomonas fluorescens and Pseudomonas putida-on the growth of wheat seedlings was studied under conditions of complete mineral supply and nitrogen deficiency in the medium. On complete mineral medium, the plants that developed from the seeds inoculated with the pseudomonads had some advantages for growth over those developed from the non-inoculated seeds. Inoculated plants showed an increased transpiration and a higher content of organic nitrogen in their biomass. Under conditions of nitrogen deficiency in the medium, no differences were found between inoculated and noninoculated plants. No competition for the nitrogen sources was revealed between the bacteria and plants; the development of the rhizosphere bacteria was limited by the rate of organic compound excretion by plant roots. The stimulatory effect produced on plant growth by the rhizosphere bacteria was shown to vary depending on the environmental factors.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Печуркин Н.С., Сомова Л.А., Полонский В.И., Письман Т.И., Сарангова А.Б., Полонская Д.Е., Садовская Г.М.
Заглавие : Влияние ризосферных бактерий Pseudomonas на рост молодых растений пшеницы в условиях полного минерального питания и при дефиците азота : научное издание
Место публикации : Микробиология. - 1997. - Т. 66, N 4. - С. 553-557. - ISSN 0026-3656
ГРНТИ : 68.03.07
Предметные рубрики: PSEUDOMONAS FLUORESCENS (BACT.)
PSEUDOMONAS PUTIDA (BACT.)
ВЛИЯНИЕ
РОСТ ПШЕНИЦЫ
РИЗОСФЕРНЫЕ МИКРООРГАНИЗМЫ
Аннотация: Изучено влияние двух видов ризосферных микроорганизмов Pseudomonas fluorescens и Pseudomonas putida на рост молодых растений пшеницы в условиях полного минерального питания и при дефиците азота в среде. Показано, что на полной минеральной среде растения, семена к-рых были инокулированы бактериями рода Pseudomonas (опытные растения), имели ростовые преимущества по сравнению с растениями, не инокулированными этими бактериями (контрольные растения). У опытных растений возрастала интенсивность транспирации, в биомассе растений было более высокое содержание органического азота. При дефиците азота в среде не отмечено изменений ростовых характеристик растений, инокулированных бактериями и без них. Не обнаружено конкуренции микроорганизмов с растениями за источники азота, так как лимитирующим фактором развития ризосферных микробов являлась скорость поступления органических веществ с корневыми эксудатами. Показано дифференцированное влияние ризосферных микроорганизмов на рост растений в зависимости от факторов среды
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Petushkov V.N., Lee J.
Заглавие : Purification and characterization of flavoproteins and cytochromes from the yellow bioluminescence marine bacterium Vibrio fischeri strain Y1
Место публикации : European Journal of Biochemistry. - 1997. - Vol. 245, Is. 3. - С. 790-796. - ISSN 00142956 (ISSN)
Ключевые слова (''Своб.индексиров.''): anisotropy--lumazine protein--photobacterium--thioredoxin reductase--time-resolved fluorescence--cytochrome--flavoprotein--article--bioluminescence--nonhuman--priority journal--protein analysis--protein purification--sea--vibrio--amino acid sequence--bacterial proteins--cytochromes--flavoproteins--molecular sequence data--sequence alignment--vibrio--azotobacter--bacteria (microorganisms)--escherichia coli--haemophilus--haemophilus influenza--murinae--negibacteria--photobacterium--photobacterium leiognathi--pseudomonas--uncultured marine bacterium--vibrio fischeri
Аннотация: Several flavoproteins and cytochromes that occur as major components in extracts of the yellow bioluminescence Y1 strain of the murine bacterium Vibrio fischeri have been purified and characterized with respect to their mass (SDS/PAGE) and matrix-assisted laser-desorption/ionization MS), chromatographic properties, N-terminal sequence, and spectroscopy (absorption, fluorescence emission and anisotropy decay). The investigated proteins were as follows: yellow fluorescence protein (YFP) with bound riboflavin, FMN or 6,7-dimethyl-8-ribityllumazine; a blue fluorescence protein (BFP) with bound 6,7-dimethyl-8-ribityllumazine, riboflavin, or 6- methyl-7-oxo-ribityllumazine; thioredoxin reductase with FAD as ligand; and two c-type diheme cytochromes, c551 and c554. We present evidence that the riboflavin-bound YFP has an N-terminal sequence corresponding to that published for the dimeric YFP. We show that an equilibrium replacement of the riboflavin can be made with excess lumazine derivative and that lumazine- bound YFP has different bioluminescence properties to those of the lumazine protein from Photobacterium leiognathi. BFP is a different protein again, and in the bacterial lysate it occurs in multiple forms, ligated to either riboflavin, lumazine, or t he 7-oxolumazine derivative. The N-terminal sequence for BFP-shows similarities to those of the YFP proteins and to lumazine protein and riboflavin synthase from Photobacterium. BFP in any form has no bioluminescence or riboflavin-synthase activity. A 70-kDa fluorescent flavoprotein with FAD as ligand has an N-terminal sequence highly similar to those of thioredoxin reductases from Haemophilus influenza and Escherichia coli. Cytochrome contaminations in previous preparations of YFP have been removed and an identified as the two c-type cytochromes c551 and c554. Both inhibit the NADH-induced bioluminescence in the reductase/luciferase system with the luciferase from P. leiognathi and V. fischeri. The N-terminal amino acid sequence of the cytochrome (c551) corresponds to a diheme cytochrome c4. The spectral properties of c554 are similar to those of other c5 cytochromes, and both c554 and c551 have absorption spectra similar to those of the respective cytochromes from the gram-negative bacteria Pseudomonas and Azotobacter.
Scopus
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Bondar V.S., Boersma M.G., Golovlev E.L., Vervoort J..., Van Berkel WJH, Finkelstein Z.I., Solyanikova I.P., Golovleva L.A., Rietjens IMCM
Заглавие : (19)F NMR study on the biodegradation of fluorophenols by various Rhodococcus species
Колич.характеристики :12 с
Место публикации : Biodegradation: SPRINGER, 1998. - Vol. 9: NMR in Environmental Sciences Symposium (OCT 24, 1997, EDE, NETHERLANDS), Is. 6. - С. 475-486. - ISSN 0923-9820, DOI 10.1023/A:1008391906885
Примечания : Cited References: 37
Предметные рубрики: NUCLEAR-MAGNETIC-RESONANCE
PSEUDOMONAS-PUTIDA MT-2
PHENOL HYDROXYLASE
BACTERIAL-DEGRADATION
3-OXOADIPATE PATHWAY
FLUOROBENZOIC ACID
CONVERSION
METABOLISM
CYCLOISOMERASES
2-CHLORO-CIS,CIS-MUCONATE
Ключевые слова (''Своб.индексиров.''): biodegradation--fluorophenols--(19)f nmr--oxidative defluorination--rhodococcus species
Аннотация: Of all NMR observable isotopes (19)F is the one perhaps most convenient for studies on biodegradation of environmental pollutants. The reasons underlying this potential of (19)F NMR are discussed and illustrated on the basis of a study on the biodegradation of fluorophenols by four Rhodococcus strains. The results indicate marked differences between the biodegradation pathways of fluorophenols among the various Rhodococcus species. This holds not only for the level and nature of the fluorinated biodegradation pathway intermediates that accumulate, but also for the regioselectivity of the initial hydroxylation step. Several of the Rhodococcus species contain a phenol hydroxylase that catalyses the oxidative defluorination of ortho-fluorinated di- and trifluorophenols. Furthermore, it is illustrated how the (19)F NMR technique can be used as a tool in the process of identification of an accumulated unknown metabolite, in this case most likely 5-fluoromaleylacetate. Altogether, the (19)F NMR technique proved valid to obtain detailed information on the microbial biodegradation pathways of fluorinated organics, but also to provide information on the specificity of enzymes generally considered unstable and, for this reason, not much studied so far.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Pisman T.I., Pechurkin N.S., Mariasova T.S., Somova L.A., Sarangova A.B.
Заглавие : A mathematical model of "plants-microorganisms" interaction on complete mineral medium and under nitrogen limitation
Место публикации : Advances in Space Research. - 1999. - Vol. 24, Is. 3. - С. 383-387. - ISSN 02731177 (ISSN)
Ключевые слова (''Своб.индексиров.''): nitrogen--ecological modeling--interspecific interaction--nutrient limitation--plant--rhizosphere--article--biological model--biomass--comparative study--culture medium--drug effect--growth, development and aging--mathematics--microbiology--plant root--pseudomonas fluorescens--sweating--wheat--biomass--culture media--mathematics--models, biological--nitrogen--plant roots--plant transpiration--pseudomonas fluorescens--triticum
Аннотация: A mathematical model concerning the interaction of plants and rhizospheric microorganisms on complete mineral medium and under nitrogen limitation has been constructed. The model takes into account the closeness of plants and microorganisms in terms of the matter released by the plant and consumed by the microorganisms. The effect of rhizospheric microorganisms on plant growth with normal carbon dioxide and complete mineral medium has been demonstrated. Plants interacting with microorganisms have a greater biomass than plants growing without microorganisms. Wheat growth stimulation by metabolites of rhizospheric microorganisms under laboratory conditions on artificial soil has been experimentally demonstrated (Pechurkin, 1997). Under nitrogen limitation , the biomass of plants, with or without microorganisms, is identical, and is substantially reduced as compared with the medium with standard nitrogen. В© 1999 COSPAR. Published by Elsevier Science Ltd.
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10.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Сомова Л.А., Печуркин Н.С., Сарангова А.Б., Письмам Т.И., Полонский В.И.
Заглавие : Динамика системы "Растения - ризосферные микроогранизмы - искуственная почва" при повышенном содержании диоксида углерода в атмосфере : научное издание
Место публикации : 2-й Съезд. биофизиков России, Москва, 23-27 авг., 1999. - М., 1999. - Т.3. - С. 914. - ISBN 5-201-14417-9
ГРНТИ : 34.27.23
Предметные рубрики: ЭКОСИСТЕМЫ
ДИОКСИД УГЛЕРОДА
УВЕЛИЧЕНИЕ СОДЕРЖАНИЯ
ВЛИЯНИЕ
ДИНАМИКА
Аннотация: Изучена реакция простой наземной экосистемы "пшеница-ризосферные микроорганизмы-искусственная почва" на повышение содержания диоксида углерода в атмосфере до 0,06%. В этих условиях у растений, инокулированных ризосферными бактериями (Pseudomonas), скорость фотосинтеза повышается на 30% по сравнению с растениями, семена которых были не инокулированы бактериями. В системе с нормальным содержанием CO[2] в атмосфере (0,03%) скорость фотосинтеза у растений, инокулированных бактериями, увеличивается только на 10%. В экспериментах оценен вклад микроорганизмов в развитие системы. Растения с микроорганизмами в системе вовлекают в круговорот на 40% углерода больше, чем растения без микроорганизмов. При этом более 30% углерода, ассимилированного в системе, через корневые эксудаты идет на рост и дыхание микроорганизмов. Россия, Ин-т биофизики СО РАН, 660036 Красноярск, Академгородок
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11.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Somova L.A., Pechurkin N.S., Sarangova A.B., Pisman T.I., Polonsky V.I., Sadovskay G.M.
Заглавие : Small artificial ecosystems: response to variation of environmental factors (CO2 enrichment).
Место публикации : Life support & biosphere science : international journal of earth space. - 1999. - Vol. 6, Is. 3. - С. 215-220. - ISSN 10699422 (ISSN)
Ключевые слова (''Своб.индексиров.''): carbon--carbon dioxide--article--biomass--comparative study--drug effect--ecosystem--growth, development and aging--metabolism--microbiology--microclimate--photosynthesis--plant seed--pseudomonas--wheat--biomass--carbon--carbon dioxide--ecosystem--environment, controlled--photosynthesis--pseudomonas--seeds--soil microbiology--triticum
Аннотация: Response of "wheat plants--rhizospheric microorganisms--artificial soil"--a simple terrestrial ecosystem--to carbon dioxide increased in its atmosphere to 0.06% has been studied. It has been experimentally demonstrated that a simple ecosystem develops and functions different from its individual elements (components), in this case "plants-artificial soil" without microorganisms. With mineral nutrition unlimited and CO2 enrichment the system is capable of binding (involving into turnover) 40% more carbon than the system without microorganisms. With material balance as the basis, this article evaluates the contribution of a system's elements into its development, namely, the contribution of the photosynthesizing component and the contribution of microorganisms.
Scopus
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12.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Somova L.A, Pechurkin N.S., Sarangova A.B., Pisman T.I.
Заглавие : Effect of bacterial population density on germination wheat seeds and dynamics of simple artificial ecosystems
Место публикации : Advances in Space Research. - 2001. - Vol. 27, Is. 9. - С. 1611-1615. - ISSN 02731177 (ISSN) , DOI 10.1016/S0273-1177(01)00257-5
Ключевые слова (''Своб.индексиров.''): bacteria--biomass--ecosystems--plants (botany)--seed--artificial soil--germination--photoassimilation--space research--artificial ecosystem--article--comparative study--ecosystem--germination--growth, development and aging--isolation and purification--microbiology--physiology--plant root--plant seed--pseudomonas fluorescens--pseudomonas putida--wheat--ecosystem--germination--plant roots--pseudomonas fluorescens--pseudomonas putida--seeds--triticum
Аннотация: Effect of the size of rhizospheric bacterial populations on germination of seeds and development of simple terrestrial "wheat plants - rhizospheric microorganisms - artificial soil" and "wheat plants - artificial soil" systems has been studied. Experiments demonstrated that within specify ranges in the inoculate, the rhizospheric bacteria are capable of increasing the yield of germinated seeds and stimulate the growth of plantlets. Germination of seeds inoculated with bacteria was either stimulated, or inhibited or remained at control levels depending on the amount of bacteria. Plant biomass growth and total photoassimilation has been found to depend on the amount of bacteria on the plant roots: the higher the amount of bacteria on plant roots, the smaller is the biomass of plants but the total photoassimilation is, higher. Thus, depending on the amount of bacteria on the roots of plants the system either increases the biomass of plants or increases the total photoassimilation, i.e. "pumps" carbon through itself involving bacteria. В© 2001 COSPAR. Published by Elsevier Science Ltd. All rights reserved.
Scopus
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13.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Sarangova A.B., Somova L.A., Pechurkin N.S.
Заглавие : On monitoring the bacterial component as an indicator of the state of small man-made ecosystems
Место публикации : Advances in Space Research. - 2001. - Vol. 27, Is. 9. - С. 1605-1609. - ISSN 02731177 (ISSN) , DOI 10.1016/S0273-1177(01)00256-3
Ключевые слова (''Своб.индексиров.''): bacteria--ecosystems--substrates--intracellular substrate concentration--space research--catalase--oxidoreductase--artificial ecosystem--article--bacterial phenomena and functions--biomass--culture medium--ecosystem--enzymology--growth, development and aging--metabolism--microbiology--oxygen consumption--pseudomonas--bacterial physiology--biomass--catalase--culture media--ecosystem--oxidoreductases--oxygen consumption--pseudomonas--water microbiology
Аннотация: High reproduction rates make the bacterial component of ecosystems a good indicator of the state of the system on the whole. This determines the necessity to develop rapid monitoring of the functional state of the bacterial component of small ecosystems. Information about substrate concentration in the population is indicative of the state of the bacterial culture. Conventional methods of monitoring the concentration of integral substrate in the system take time much longer than the changes in the ecosystem. The paper presents theoretical foundations for the logical sequence "catalase activity - intracellular substrate concentration - estimate of substrate consumed by bacteria" for experimental verification and as a consequence of development of the integral method of monitoring the bacterial population on the basis of determining bacterial catalase activity. В© 2001 COSPAR. Published by Elsevier Science Ltd. All rights reserved.
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14.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Письман Т.И., Сомова Л.А., Печуркин Н.С.
Заглавие : Математическая модель взаимодействия звеньев в системе растение-ризосферные микроорганизмы при повышенном содержании диоксида углерода в атмосфере : научное издание
Место публикации : Биофизика. - 2002. - Т. 47, N 5. - С. 920-925. - ISSN 0006-3029
ГРНТИ : 34.03.23
Предметные рубрики: ЭКОСИСТЕМЫ
ДИОКСИД УГЛЕРОДА
ВЛИЯНИЕ
РАСТЕНИЯ
РИЗОСФЕРНЫЕ МИКРООРГАНИЗМЫ
МАТЕМАТИЧЕСКАЯ МОДЕЛЬ
Аннотация: Построена математическая модель, описывающая взаимодействие растений и ризосферных микроорганизмов на полной минеральной среде при повышенном содержании CO[2] в атмосфере. Показано положительное действие повышенного содержания CO[2] на систему растение - ризосферные микроорганизмы. С помощью модели продемонстрировано влияние ризосферных микроорганизмов на рост растений. Показано, что биомасса растений в системе растение - ризосферные микроорганизмы меньше биомассы растений без микроорганизмов. На примере простой экосистемы пшеница - Pseudomonas putida - искусственная почва экспериментально подтверждено, что на минеральной среде (без лимита по азоту) при повышенном содержании CO[2] (0,66%) биомасса растений, корни которых инокулированы микроорганизмами, меньше биомассы растений без инокуляции микроорганизмами. Россия, Ин-т биофизики СО РАН, 660036, Красноярск, Академгородок. Библ. 13
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15.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Volova T.G., Kalacheva G.S., Altukhova O.V.
Заглавие : Autotrophic synthesis of polyhydroxyalkanoates by the bacteria Ralstonia eutropha in the presence of carbon monoxide
Колич.характеристики :4 с
Место публикации : Appl. Microbiol. Biotechnol.: SPRINGER-VERLAG, 2002. - Vol. 58, Is. 5. - P675-678. - ISSN 0175-7598, DOI 10.1007/s00253-002-0941-8
Примечания : Cited References: 35
Предметные рубрики: PSEUDOMONAS-OLEOVORANS
ALCALIGENES-EUTROPHUS
COAL
CULTIVATION
METABOLISM
SUBSTRATE
CULTURE
CO2
H-2
O-2
Аннотация: It has been found that the carbon monoxide (CO)-resistant strain of the hydrogen bacteria Ralstonia eutropha B5786 is able to synthesise polyhydroxyalkanoates (PHAs) in the presence of CO under autotrophic conditions. This strain, grown on model gas mixtures containing 5-25% CO v/v), accumulates up to 70-75% (of absolutely dry matter) PHA, without significant variation in the yield coefficient on hydrogen. No suppression of the activities of the key enzymes of PHA synthesis (beta-ketothiolase, acetoacetyl-CoA-reductase, butyrate dehydrogenase and poly-3-hydroxybutyrate synthase) was recorded. The PHA synthesised is a copolymer containing mostly beta-hydroxybutyrate (more than 99 mol%) with trace amounts of beta-hydroxyvalerate. The investigated properties of the polymer (molecular weight, crystallinity, temperature characteristics) do not differ from those of the polymer synthesised on electrolytic hydrogen.
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16.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Pis'man T.I., Somova L.A., Pechurkin N.S.
Заглавие : Mathematical model of the interaction of components in a plant-rhizospheric microorganisms system at the higher level of carbon dioxide in atmosphere
Место публикации : Biofizika. - 2002. - Vol. 47, Is. 5. - С. 920-925. - ISSN 00063029 (ISSN)
Ключевые слова (''Своб.индексиров.''): carbon dioxide--algorithm--article--biological model--biomass--ecosystem--microbiology--physiology--plant seed--pseudomonas putida--wheat--algorithms--biomass--carbon dioxide--ecosystem--models, biological--pseudomonas putida--seeds--triticum
Аннотация: A mathematical model describing the interaction of plants and rhizospheric microorganisms on complete mineral medium at a higher CO2 level in the atmosphere was constructed. The positive effect of CO2-enrichment on the system plant--rhizospheric microorganisms was shown. The effect of rhizospheric microorganisms on plant growth at normal and high level of carbon dioxide was demonstrated. It was shown that the biomass of plant in the system is smaller than the biomass of plant growing without microorganisms. It was experimentally demonstrated that a simple ecosystem wheat--Pseudomonas putida--artificial soil develops and functions differently than its individual constituents in the case of a wheat-artificial soil system. With unlimited nutrition and a higher CO2 level (0.06%), plants with roots inoculated with microorganisms have a smaller biomass than plants that were not inoculated with microorganisms.
Scopus
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17.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Pisman T.I., Somova L.A., Pechurkin N.S.
Заглавие : A Mathematical Model of the Interaction of the Components in a System Plant-Rhizospheric Microorganisms at a Higher CO2 Level in the Atmosphere
Место публикации : Biofizika. - 2002. - Vol. 47, Is. 5. - С. 924-925. - ISSN 00063029 (ISSN)
Ключевые слова (''Своб.индексиров.''): co2-enrichment--ecosystem--plant--rhizospheric microorganisms
Аннотация: A mathematical model describing the interaction of plants and rhizospheric microorganisms on complete mineral medium at a higher CO2 level in the atmosphere was constructed. The positive effect of CO2-enrichment on the system plant - rhizospheric microorganisms was shown. The effect of rhizospheric microorganisms on plant growth at normal and high level of carbon dioxide was demonstrated. It was shown that the biomass of plant in the system is smaller than the biomass of plant growing without microorganisms. It was experimentally demonstrated that a simple ecosystem wheat - Pseudomonas putida - artificial soil develops and functions differently than its individual constituents in the case of a wheat-artificial soil system. With unlimited nutrition and a higher CO2 level (0.06%), plants with roots inoculated with microorganisms have a smaller biomass than plants that were not inoculated with microorganisms.
Scopus
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18.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Pisman T.I., Somova L.A., Pechurkin N.S.
Заглавие : A mathematical model of the interaction of the components in a system plant-rhizospheric microorganisms at a higher CO2 level in the atmosphere
Колич.характеристики :6 с
Место публикации : Biofizika: MEZHDUNARODNAYA KNIGA, 2002. - Vol. 47, Is. 5. - P920-925. - ISSN 0006-3029
Примечания : Cited References: 13
Предметные рубрики: CARBON-DIOXIDE
ENRICHMENT
ECOSYSTEMS
Ключевые слова (''Своб.индексиров.''): plant--rhizospheric microorganisms--ecosystem--co2-enrichnient
Аннотация: A mathematical model describing the interaction of plants and rhizospheric microorganisms on complete mineral medium at a higher CO2 level in the atmosphere was constructed. The positive effect of CO2-enrichment on the system plant - rhizospheric micro organisms was shown. The effect of rhizospheric microorganisms on plant growth at normal and high level of carbon dioxide was demonstrated. It was shown that the biomass of plant in the system is smaller than the biomass of plant growing without microorganisms. It was experimentally demonstrated that a simple ecosystem wheat - Pseudomonas putida - artificial soil develops and functions differently than its individual constituents in the case of a wheat-artificial soil system. With unlimited nutrition and a higher CO2 level (0.06%), plants with roots inoculated with micro organisms have a smaller biomass than plants that were not inoculated with micro organisms.
WOS
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19.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Lesniak D.V., Popova L.I.
Заглавие : Conflict: induction-inhibition of transgene bacteria luminescence in studying expression of lux-genes
Место публикации : Biofizika. - 2002. - Vol. 47, Is. 6. - P1059-1063. - ISSN 00063029 (ISSN)
Ключевые слова (''Своб.индексиров.''): naphthalene derivative--salicylic acid derivative--article--bacterial gene--chemistry--chemoluminescence--culture medium--escherichia coli--gene expression regulation--genetics--metabolism--pseudomonas fluorescens--transgene--chemiluminescent measurements--culture media--escherichia coli--gene expression regulation, bacterial--genes, bacterial--naphthalenes--pseudomonas fluorescens--salicylates--transgenes
Аннотация: The relationship between the induction of the luminescent operon of lux-genes fused with the naphthalene and salicylate degradation genes and the inhibition of light emission caused by these compounds was studied. The quantitative correlations between these processes manifest themselves in the fact that light intensity linearly increased in a narrow concentration range of the inductor and then decreased due to the inhibition of the luminescence reaction itself, which is not related to the regulation of expression of lux-genes.
Scopus
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20.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Khizhnyak S.V., Tausheva I.V., Berezikova A.A., Nesterenko E.V., Rogozin D.Y.
Заглавие : Psychrophilic and psychrotolerant heterotrophic microorganisms of Middle Siberian karst cavities
Колич.характеристики :5 с
Место публикации : Russ. J. Ecol.: MAIK NAUKA/INTERPERIODICA, 2003. - Vol. 34, Is. 4. - P231-235. - ISSN 1067-4136, DOI 10.1023/A:1024537513439
Примечания : Cited References: 12
Ключевые слова (''Своб.индексиров.''): 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.
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