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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Gitelson I.I., Tikhomirov A.A., Parshina O.V., Ushakova S.A., Kalacheva G.S.
Заглавие : Volatile metabolites of higher plant crops as a photosynthesizing life support system component under temperature stress at different light intensities
Место публикации : Advances in Space Research. - 2003. - Vol. 31, Is. 7. - С. 1781-1786. - ISSN 02731177 (ISSN) , DOI 10.1016/S0273-1177(03)00121-2
Ключевые слова (''Своб.индексиров.''): composition--crops--heat resistance--metabolites--photosynthesis--volatile metabolites--space research--biosphere--article--comparative study--gas--growth, development and aging--heat--indoor air pollution--light--metabolism--microclimate--photon--photosynthesis--physiology--radiation exposure--volatilization--wheat--air pollution, indoor--environment, controlled--gases--heat--life support systems--light--photons--photosynthesis--triticum--volatilization
Аннотация: The effect of elevated temperatures of 35 and 45В°C (at the intensities of photosynthetically active radiation 322, 690 and 1104 ?mol-m-2-s-1) on the photosynthesis, respiration, and qualitative and quantitative composition of the volatiles emitted by wheat (Triticum aestuvi L., cultivar 232) crops was investigated in growth chambers. Identification and quantification of more than 20 volatile compounds (terpenoids - ?-pinene, ?3 carene, limonene, benzene, ?-and transcaryophyllene, ?- and ?-terpinene, their derivatives, aromatic hydrocarbons, etc.) were conducted by gas chromatograph/mass spectrometry. Under light intensity of 1104 ?mol-m-2-s-1, heat resistance of photosynthesis and respiration increased at 35В°C and decreased at 45В°C. The action of elevated temperatures brought about variations in the rate and direction of the synthesis of volatile metabolites. The emission of volatile compounds was the greatest under a reduced irradiation of 322 ?mol-m-2-s-1 and the smallest under 1104 ?mol-m-2-s-1 at 35В°C. During the repair period, the contents and proportions of volatile compounds were different from their initial values, too. The degree of disruption and the following recovery of the functional state depended on the light intensity during the exposure to elevated temperatures. The investigation of the atmosphere of the growth chamber without plants has revaled the substances that were definitely technogenic in origin: tetramethylurea, dimethylsulfide, dibutylsulfide, dibutylphthalate, and a number of components of furan and silane nature. В© 2003 COSPAR. Published by Elsevier Science Ltd. All rights reserved.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Brilkov A.V., Loginov I.A., Morozova E.V., Pechurkin N.S.
Заглавие : Trends in microevolution of microbial populations in open systems
Место публикации : Doklady Biochemistry and Biophysics. - 2005. - Vol. 404, Is. 1-6. - С. 349-352. - ISSN 16076729 (ISSN) , DOI 10.1007/s10628-005-0111-x
Ключевые слова (''Своб.индексиров.''): article--bacterial phenomena and functions--bacterium--biological model--culture technique--escherichia coli--evolution--genetics--growth, development and aging--mathematics--methodology--mutation--nanotechnology--ph--physiology--population dynamics--time--bacteria--bacterial physiology--cell culture techniques--escherichia coli--evolution--hydrogen-ion concentration--mathematics--models, biological--mutation--nanotechnology--population dynamics--time factors
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Nekrasov V.M., Chernychev A.V., Degermendzhy A.G.
Заглавие : The "quantization" of sensitivity coefficients is preserved in microbial populations heterogeneous with respect to growth rate and age
Место публикации : Doklady Biological Sciences. - 2006. - Vol. 406, Is. 1-6. - С. 91-93. - ISSN 00124966 (ISSN) , DOI 10.1134/S0012496606010261
Ключевые слова (''Своб.индексиров.''): algorithm--article--bacterium--biodiversity--growth, development and aging--population dynamics--theoretical model--time--algorithms--bacteria--biodiversity--models, theoretical--population dynamics--time factors
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Gladyshev M.I., Kolmakov V.I., Dubovskaya O.P., Ivanova E.A.
Заглавие : The microalgal food spectrum of Daphnia longispina during the algal bloom of an eutrophic water body.
Место публикации : Doklady Biological Sciences. - 2000. - Vol. 371, Is. 1-6. - С. 179-181. - ISSN 00124966 (ISSN)
Ключевые слова (''Своб.индексиров.''): alga--animal--article--biomass--daphnia--ecosystem--food chain--growth, development and aging--microbiology--plankton--zooplankton--algae--animals--biomass--daphnia--ecosystem--food chain--plankton--water microbiology--zooplankton
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Kalacheva G.S., Zhila N.O., Volova T.G., Gladyshev M.I.
Заглавие : The effect of temperature on the lipid composition of Botryococcus
Место публикации : Mikrobiologiya. - 2002. - Vol. 71, Is. 3. - С. 336-344. - ISSN 00263656 (ISSN)
Ключевые слова (''Своб.индексиров.''): fatty acid--lipid--triacylglycerol--article--biosynthesis--chemistry--comparative study--green alga--growth, development and aging--metabolism--temperature--algae, green--fatty acids--lipids--temperature--triglycerides
Аннотация: The lipid composition of the green alga Botryococcus was studied at three different cultivation temperatures: suboptimal, optimal, and supraoptimal. Cultivation at the supraoptimal temperature was found to considerably inhibit the synthesis of nearly all intracellular lipids, except for triacylglycerides, and to influence their fatty acid composition. In particular, the content of trienoic fatty acids was significantly lower at the supraoptimal than at the optimal cultivation temperature. At the same time, the fatty acid composition of the extracellular lipids of the alga virtually did not depend on cultivation temperature.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Volova T.G., Kalacheva G.S., Altukhova O.V.
Заглавие : The autotrophic synthesis of polyhydroxyalkanoate by alcaligenes eutrophus in the presence of carbon monoxide
Место публикации : Mikrobiologiya. - 2001. - Vol. 70, Is. 6. - С. 745-752. - ISSN 00263656 (ISSN)
Ключевые слова (''Своб.индексиров.''): co inhibition--hydrogen-oxidizing bacteria--polyhydroxyalkanoates (phas)--synthesis--alkane--carbon monoxide--fatty acid--hydroxyacid--lipid--nitrogen--polyester--article--chemistry--culture medium--drug antagonism--growth, development and aging--mass spectrometry--metabolism--wautersia eutropha--alkanes--carbon monoxide--culture media--cupriavidus necator--fatty acids--hydroxy acids--lipids--mass spectrometry--nitrogen--polyesters
Аннотация: The CO-resistant strain B5786 of the hydrogen-oxidizing bacterium Alcaligenes eutrophus was found to be able to synthesize polyhydroxyalkanoates (PHAs) under the conditions of growth limitation by nitrogen deficiency (the factor that promotes PHA synthesis) and growth inhibition by carbon monoxide. The gas mixtures that contained from 5 to 20 vol % CO did not inhibit the key enzymes of PHA synthesis-?-ketothiolase, acetoacetyl-CoA reductase, hydroxybutyrate dehydrogenase, and PHA synthase. In the presence of CO, cells accumulated up to 70-75 wt % PHA (with respect to the dry biomass) without any noticeable increase in the consumption of the gas substrate. Chromatographic-mass spectrometric analysis showed that the PHA synthesized by A. eutrophus is a copolymer containing more than 99 mol % ?-hydroxybutyrate and trace amounts of ?-hydroxyvalerate. The PHA synthesized under the conditions described did not differ from that synthesized by A. eutrophus cells from electrolytic hydrogen.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Tikhomirov A.A., Ushakova S.A., Manukovsky N.S., Lisovsky G.M., Kudenko Yu.A., Koyalev V.S., Gribovskaya I.V., Tirranen L.S., Zolotukhin I.G., Gros J.B., Lasseur Ch.
Заглавие : Synthesis of biomass and utilization of plants wastes in a physical model of biological life-support system
Место публикации : Acta Astronautica. - 2003. - Vol. 53, Is. 4-10. - С. 249-257. - ISSN 00945765 (ISSN) , DOI 10.1016/S0094-5765(03)00137-1
Ключевые слова (''Своб.индексиров.''): ecosystems--microorganisms--ph--photosynthesis--plants (botany)--synthesis (chemical)--waste utilization--biological life support systems (blls)--gas exchange--plant respiration--biomass--carbon dioxide--agaricales--article--biomass--bioremediation--growth, development and aging--hydroponics--incineration--metabolism--methodology--microbiology--microclimate--photosynthesis--plant physiology--radish--space flight--waste management--weightlessness--wheat--agaricales--biodegradation, environmental--biomass--carbon dioxide--ecological systems, closed--environmental microbiology--hydroponics--incineration--life support systems--photosynthesis--plant physiology--raphanus--space flight--triticum--waste management--weightlessness
Аннотация: The paper considers problems of biosynthesis of higher plants' biomass and "biological incineration" of plant wastes in a working physical model of biological LSS. The plant wastes are "biologically incinerated" in a special heterotrophic block involving Califomian worms, mushrooms and straw. The block processes plant wastes (straw, haulms) to produce soil-like substrate (SLS) on which plants (wheat, radish) are grown. Gas exchange in such a system consists of respiratory gas exchange of SLS and photosynthesis and respiration of plants. Specifics of gas exchange dynamics of high plants - SLS complex has been considered. Relationship between such a gas exchange and PAR irradiance and age of plants has been established. Nitrogen and iron were found to the first to limit plants' growth on SLS when process conditions are deranged. The SLS microflora has been found to have different kinds of ammonifying and denitrifying bacteria which is indicative of intensive transformation of nitrogen-containing compounds. The number of physiological groups of microorganisms in SLS was, on the whole, steady. As a result, organic substances - products of exchange of plants and microorganisms were not accumulated in the medium, but mineralized and assimilated by the biocenosis. Experiments showed that the developed model of a man-made ecosystem realized complete utilization of plant wastes and involved them into the intrasystem turnover. В© 2003 International Astronautical Federation. Published by Elsevier Science Ltd. All rights reserved.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Boyandin A.N., Lobova T.I., Popova L.Yu., Pechurkin N.S.
Заглавие : Survival and alteration of the plasmid-containing microorganism Escherichia coli Z905/pPHL7 introduced into manmade closed aquatic microcosms
Место публикации : Advances in Space Research. - 2003. - Vol. 31, Is. 7. - С. 1763-1768. - ISSN 02731177 (ISSN) , DOI 10.1016/S0273-1177(03)00118-2
Ключевые слова (''Своб.индексиров.''): cells--escherichia coli--salts--recombinant plamid--space research--ampicillin--chloride--inorganic salt--magnesium--mineral--potassium--sodium--sulfate--genetically modified organism--article--bacterial count--chemoluminescence--culture medium--drug effect--escherichia coli--genetics--growth, development and aging--microbiology--microclimate--penicillin resistance--plasmid--russian federation--transgenic organism--ampicillin--ampicillin resistance--chemiluminescent measurements--chlorides--colony count, microbial--culture media--ecological systems, closed--escherichia coli--magnesium--minerals--organisms, genetically modified--plasmids--potassium--russia--salts--sodium--sulfates--water microbiology
Аннотация: It has been demonstrated that the transgenic microorganism Escherichia coli Z905/pPHL7 (Ap'Lux+) can exist for a long time at an elevated concentration of mineral salts. The microorganism was introduced into microcosms with sterile brackish water (salinity variable from 21 to 22 g 1-1) taken from Lake Shira (Khakasia, Russia). The survivof the microorganism was estimated both by measuring the growth of the colonies on solid nutrient media and by the bioluminescence exhibited by the transgenic strain in samples from the microcosms and in the enrichment culture with the added selective factor - ampicillin (50 ?g/ml). In the enrichment culture, the bioluminescent signal was registered through the 160-day experiment. It has been shown that in the closed microcosms with brackish water the E. coli strain becomes heterogeneous in its ampicillin resistance. The populations of the transgenic strain were mainly represented by isolates able to persist in the medium containing 50 ?g/ml, but there were also the cells (about 10%) with the threshold of ampicillin resistance not more than 0.05 ?g/ml. Thus, it was shown that in the microcosms with brackish water and in the absence of the selective factor the transgenic strain survives and retains the recombinant plasmid. В© 2003 COSPAR. Published by Elsevier Science Ltd. All rights reserved.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Syromotina D. S., Surmenev R. A., Surmeneva M. A., Boyandin A. N., Nikolaeva E. D., Prymak O., Epple M., Ulbricht M., Oehr C., Volova T. G.
Заглавие : Surface wettability and energy effects on the biological performance of poly-3-hydroxybutyrate films treated with RF plasma
Место публикации : Mater. Sci. Eng. C. - 2016. - Vol. 62. - С. 450-457. - ISSN 09284931 (ISSN) , DOI 10.1016/j.msec.2016.01.075
Ключевые слова (''Своб.индексиров.''): plasma--polar component--poly-3-hydroxybutyrate membranes--surface energy--surface treatment--ammonia--biodegradable polymers--cell adhesion--contact angle--free energy--interfacial energy--plasma applications--plasmas--surface chemistry--surface properties--surface roughness--surface topography--wetting--biological performance--crystalline structure--polar components--poly-3-hydroxybutyrate--surface free energy--surface roughness changes--surface wettability--water contact angle--surface treatment
Аннотация: The surface properties of poly-3-hydroxybutyrate (P3HB) membranes were modified using oxygen and an ammonia radio-frequency (RF, 13.56 MHz) plasma. The plasma treatment procedures used in the study only affected the surface properties, including surface topography, without inducing any significant changes in the crystalline structure of the polymer, with the exception being a power level of 250 W. The wettability of the modified P3HB surfaces was significantly increased after the plasma treatment, irrespective of the treatment procedure used. It was revealed that both surface chemistry and surface roughness changes caused by the plasma treatment affected surface wettability. A treatment-induced surface aging effect was observed and resulted in an increase in the water contact angle and a decrease in the surface free energy. However, the difference in the water contact angle between the polymers that had been treated for 4 weeks and the untreated polymer surfaces was still significant. A dependence between cell adhesion and proliferation and the polar component of the surface energy was revealed. The increase in the polar component after the ammonia plasma modification significantly increased cell adhesion and proliferation on biodegradable polymer surfaces compared to the untreated P3HB and the P3HB modified using an oxygen plasma. © 2016 Elsevier B.V.
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10.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Volova T.G., Voinov N.A.
Заглавие : Study of Ralstonia eutropha culture producing polyhydroxyalkanoates on products of coal processing
Место публикации : Prikladnaia biokhimiia i mikrobiologiia. - 2004. - Vol. 40, Is. 3. - С. 296-300. - ISSN 05551099 (ISSN)
Ключевые слова (''Своб.индексиров.''): carbon monoxide--coal--polyester--antibiotic resistance--article--culture medium--enzyme specificity--gas--growth, development and aging--metabolism--microbiology--wautersia eutropha--carbon monoxide--coal--culture media--cupriavidus necator--drug resistance, microbial--gases--polyesters--substrate specificity
Аннотация: Kinetic indices of growth, polyhydroxyalkanoate (PHA) accumulation, and gas exchange have been studied in a culture of the carbon monoxide-resistant hydrogen strain Ralstonia eutropha B-5786 grown on a gaseous substrate (GS) obtained by lignite gasification. The GS was shown to be suitable for PHA production. To increase the degree of GS consumption, various modes of gas supply to the culture were tested. Based on the results, an algorithm was developed for calculating and controlling gas-exchange parameters in the PHA-accumulating culture of Ralstonia eutropha, grown on a new GS allowing high polymer yields (up to 75%) and degrees of the substrate utilization (up to 90%).
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11.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Tikhomirov A.A.
Заглавие : Spectral composition of light and plant productivity
Место публикации : Advances in Space Research. - 1996. - Vol. 18, Is. 4-5. - С. 259-263. - ISSN 02731177 (ISSN)
Ключевые слова (''Своб.индексиров.''): article--biology--cucumber--growth, development and aging--illumination--light--maize--photon--photosynthesis--plant--radiation exposure--spectroscopy--sunflower--tomato--wheat--cucumis sativus--helianthus--light--lighting--lycopersicon esculentum--photobiology--photons--photosynthesis--plants--spectrum analysis--triticum--zea mays
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12.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Kolmakov V.I., Gladyshev M.I., Kravchuk E.S., Chuprov S.M., Anishchenko O.V., Ivanova E.A., Trusova M.Yu.
Заглавие : Species-specific stimulation of cyanobacteria by silver carp Hypophthalmichthys molitrix (Val.)
Место публикации : Doklady Biological Sciences. - 2006. - Vol. 408, Is. 1. - С. 223-225. - ISSN 00124966 (ISSN) , DOI 10.1134/S0012496606030069
Ключевые слова (''Своб.индексиров.''): animal--article--carp--cyanobacterium--growth, development and aging--microbiology--species difference--animals--carps--cyanobacteria--species specificity--cyanobacteria--cyprinus carpio--hypophthalmichthys molitrix--hypophthalmichthys nobilis
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13.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Ushakova S.A., Zolotukhin I.G., Tikhomirov A.A., Tikhomirova N.A., Kudenko Yu.A., Gribovskaya I.V., Balnokin Yu., Gros J.B.
Заглавие : Some methods for human liquid and solid waste utilization in bioregenerative life-support systems
Место публикации : Applied Biochemistry and Biotechnology. - 2008. - Vol. 151, Is. 2-3. - С. 676-685. - ISSN 02732289 (ISSN) , DOI 10.1007/s12010-008-8291-3
Ключевые слова (''Своб.индексиров.''): closure--human waste--life-support systems--salicornia--sodium chloride--above-ground biomass--biological lives--bioregenerative--closure--cultivation process--culture methods--human waste--irrigation waters--life-support systems--manned space missions--mineral elements--physico-chemical methods--salicornia--salicornia europaea--salt-tolerant--soil-like substrates--biomass--body fluids--electrodialysis--grain (agricultural product)--irrigation--liquids--metal refining--minerals--mining--oxidation--plant shutdowns--sodium chloride--soils--solid wastes--substrates--water supply--vegetation--article--biomass--controlled study--electrodialysis--halophyte--irrigation (agriculture)--microclimate--nonhuman--recycling--salicornia europaea--solid waste--bioremediation--dialysis--feces--goosefoot--growth, development and aging--human--methodology--salt tolerance--urine--waste management--wheat--batis maritima--salicornia--salicornia europaea--triticum aestivum--biodegradation, environmental--chenopodiaceae--dialysis--feces--humans--life support systems--salt-tolerance--triticum--urine--waste management
Аннотация: Bioregenerative life-support systems (BLSS) are studied for developing the technology for a future biological life-support system for long-term manned space missions. Ways to utilize human liquid and solid wastes to increase the closure degree of BLSS were investigated. First, urine and faeces underwent oxidation by Kudenko's physicochemical method. The products were then used for root nutrition of wheat grown by the soil-like substrate culture method. Two means of eliminating sodium chloride, introduced into the irrigation solution together with the products of urine oxidation, were investigated. The first was based on routine electrodialysis of irrigation water at the end of wheat vegetation. Dialysis eliminated about 50% of Na from the solution. This desalinization was performed for nine vegetations. The second method was new: after wheat cultivation, the irrigation solution and the solution obtained by washing the substrate containing mineral elements not absorbed by the plants were used to grow salt-tolerant Salicornia europaea L. plants (saltwort). The above-ground biomass of this plant can be used as a food, and roots can be added to the soil-like substrate. Four consecutive wheat and Salicornia vegetations were cultivated. As a result of this wheat and Salicornia cultivation process, the soil-like substrate salinization by NaCl were considerably decreased. В© 2008 Humana Press.
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14.

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.
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15.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Gitelson I.I., Degermendzhy A.G., Rodicheva E.K.
Заглавие : Self-restoration as fundamental property of CES providing their sustainability
Место публикации : Advances in Space Research. - 2003. - Vol. 31, Is. 7. - С. 1641-1648. - ISSN 02731177 (ISSN) , DOI 10.1016/S0273-1177(03)00111-X
Ключевые слова (''Своб.индексиров.''): biocatalysts--ecosystems--genes--life support systems (spacecraft)--radiation damage--cell populations--space flight--space shuttle--article--biological model--biomass--cell division--chlorella--cytology--growth, development and aging--microclimate--radiation exposure--radiation response--ultraviolet radiation--biomass--cell division--chlorella--dose-response relationship, radiation--ecological systems, closed--life support systems--models, biological--ultraviolet rays
Аннотация: Sustainability is one of the most important criteria and evaluation of human life support systems intended for use during long space flights. The common feature of biological and physicochemical life support systems is that basically they are both catalytic. But there are two fundamental properties distinguishing biological systems: 1) they are auto-catalytic: their catalysts - enzymes of protein nature - are continuously reproduced when the system functions; 2) the program of every process performed by enzymes and the program of their reproduction are inherent in the biological system itself - in the totality of genomes of the species involved in the functioning of the ecosystem. Actually, one cell with the genome capable of the phenotypic realization is enough for the self-restoration of the function performed by the cells of this species in the ecosystem. The continuous microalgal culture of Chlorella vulgaris was taken to investigate quantitatively the process of self-restoration in unicellular algae population. Based on the data obtained, we proposed a mathematical model of the restoration process in a cell population that has suffered an acute radiation damage. В© 2003 COSPAR. Published by Elsevier Science Ltd. All rights reserved.
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16.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Sushchik N.N., Kalacheva G.S., Gladyshev M.I.
Заглавие : Secretion of free fatty acids by prokaryotic and eukaryotic algae at optimal, supraoptimal, and suboptimal growth temperatures
Место публикации : Mikrobiologiya. - 2001. - Vol. 70, Is. 5. - С. 629-635. - ISSN 00263656 (ISSN)
Ключевые слова (''Своб.индексиров.''): free fatty acids--microalgae--secretion--fatty acid--article--chemistry--chlorella--cyanobacterium--cytology--extracellular space--growth, development and aging--intracellular fluid--temperature--chlorella--cyanobacteria--english abstract--extracellular space--fatty acids, nonesterified--intracellular fluid--temperature
Аннотация: Abstract-The paper describes the composition of extracellular free fatty acids (FFAs) and intracellular fatty acids (FAs) in the enrichment cultures of the prokaryotic alga Spirulina platensis and the eukaryotic alga Chlorella vulgaris grown at optimal, supraoptimal, and suboptimal growth temperatures. With increasing growth temperature, the degree of unsaturation of the intracellular FAs of both algae decreased, while that of the extracellular FFAs of 5. platensis increased. The composition of the extracellular FFAs of C. vulgaris practically did not depend on the growth temperature.
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17.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Zadereev E.S., Prokopkin I.G.
Заглавие : Role of diapause in coexistence of zooplankton species: Model analysis
Место публикации : Doklady Biological Sciences. - 2007. - Vol. 412, Is. 1. - С. 73-75. - ISSN 00124966 (ISSN) , DOI 10.1134/S0012496607010243
Ключевые слова (''Своб.индексиров.''): animal--article--biological model--cladocera--ecosystem--female--growth, development and aging--oocyte--physiology--population dynamics--reproduction--zooplankton--animals--cladocera--ecosystem--female--models, biological--ovum--population dynamics--reproduction--zooplankton
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18.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Gros J.B., Poughon L., Lasseur C., Tikhomirov A.A.
Заглавие : Recycling efficiencies of C,H,O,N,S, and P elements in a biological life support system based on micro-organisms and higher plants
Место публикации : Advances in Space Research. - 2003. - Vol. 31, Is. 1. - С. 195-199. - ISSN 02731177 (ISSN) , DOI 10.1016/S0273-1177(02)00739-1
Ключевые слова (''Своб.индексиров.''): biomass--biosynthesis--chemical elements--earth atmosphere--ecosystems--life support systems (spacecraft)--manned space flight--microorganisms--plants (botany)--wastes--compartments--space research--carbon--carbon dioxide--hydrogen--nitrogen--oxygen--phosphorus--sulfur--space technology--article--biological model--biomass--chemistry--comparative study--computer simulation--growth, development and aging--metabolism--methodology--microbiology--microclimate--plant--waste management--biomass--carbon--carbon dioxide--computer simulation--ecological systems, closed--environmental microbiology--hydrogen--life support systems--models, biological--nitrogen--oxygen--phosphorus--plants, edible--sulfur--waste management
Аннотация: MELiSSA is a microorganism based artificial ecosystem conceived as a tool for understanding the behavior of ecosystems and developing the technology for future Manned Space Missions. MELiSSA is composed of four compartments colonized by the microorganisms required by the function of this ecosystem : breakdown of waste produced by men, regeneration of atmosphere and biosynthesis of edible biomass. This paper reports the mass balance description of a Biological Life Support System composed of the MELiSSA loop and of a Higher Plant Compartment working in parallel with the photosynthetic Spirulina compartment producing edible biomass. The recycling efficiencies of the system are determined and compared for various working conditions of the MELiSSA loop with or without the HPC. В© 2002 Published by Elsevier Science Ltd on behalf of COSPAR.
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19.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Popova L.Yu., Kargatova T.V., Ganusova E.E., Lobova T.I., Boyandin A.N., Mogilnaya O.A., Pechurkin N.S.
Заглавие : Population dynamics of transgenic strain Escherichia coli Z905/pPHL7 in freshwater and saline lake water microcosms with differing microbial community structures
Место публикации : Advances in Space Research. - 2005. - Vol. 35, Is. 9 SPEC. ISS. - С. 1573-1578. - ISSN 02731177 (ISSN) , DOI 10.1016/j.asr.2005.01.037
Ключевые слова (''Своб.индексиров.''): microcosm--plasmid--population dynamics--transgenic microorganism--bacteria--genes--microorganisms--saline water--microcosms--plasmid--population dynamics--transgenic microorganism--escherichia coli--brine--fresh water--inorganic salt--bacterial gene--conference paper--ecosystem--escherichia coli--gene expression regulation--genetics--growth, development and aging--microbiology--micrococcus--penicillin resistance--plasmid--population dynamics--transgenic organism--ampicillin resistance--ecosystem--environmental microbiology--escherichia coli--fresh water--gene expression regulation, bacterial--genes, bacterial--micrococcus--organisms, genetically modified--plasmids--population dynamics--salts--water microbiology
Аннотация: Populations of Escherichia coli Z905/pPHL7, a transgenic microorganism, were heterogenic in the expression of plasmid genes when adapting to the conditions of water microcosms of various mineralization levels and structure of microbial community. This TM has formed two subpopulations (ampicillin- resistant and ampicillin-sensitive) in every microcosm. Irrespective of mineralization level of a microcosm, when E. coli Z905/pPHL7 alone was introduced, the ampicillin-resistant subpopulation prevailed, while introduction of the TM together with indigenous bacteria led to the dominance of the ampicillin-sensitive subpopulation. A high level of lux gene expression maintained longer in the freshwater microcosms than in sterile saline lake water microcosms. A horizontal gene transfer has been revealed between the jointly introduced TM and Micrococcus sp. 9/pSH1 in microcosms with the Lake Shira sterile water. В© 2005 COSPAR. Published by Elsevier Ltd. All rights reserved.
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20.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Popova L.Yu., Lobova T.I., Krylova T.Yu., Kargatova T.V., Maksimova E.E., Boyandin A.N., Pechurkin N.S.
Заглавие : Population dynamics of transgenic microorganisms in the different microecosystem conditions
Место публикации : Advances in Space Research. - 2001. - Vol. 27, Is. 9. - С. 1571-1579. - ISSN 02731177 (ISSN) , DOI 10.1016/S0273-1177(01)00248-4
Ключевые слова (''Своб.индексиров.''): ecosystems--escherichia coli--genes--interferons--luminescence--vaccines--microcosms--microorganisms--fresh water--microorganism--adaptation--article--bacillus subtilis--comparative study--ecosystem--escherichia coli--gene expression--genetics--growth, development and aging--hazardous waste--microbiology--micrococcus--osmotic pressure--plasmid--population dynamics--risk assessment--transgenic organism--adaptation, physiological--bacillus subtilis--containment of biohazards--ecosystem--escherichia coli--fresh water--gene expression--micrococcus--organisms, genetically modified--osmotic pressure--plasmids--population dynamics--risk assessment--water microbiology
Аннотация: The role of key environmental factors in adaptation of spore-forming and non-spore-forming transgenic microorganisms (TM) have been studied in model ecosystems. Model TM Escherichia coli Z905 (bearing plasmid genes of bacterial luminescence Ap1Lux+) has been found to have a higher adaptation potential than TM Bacillus subtilis 2335/105 (bearing genes of human ? 2-interferon Km1Inf+), planned for employment as a living vaccine under varying environmental conditions. Effects of abiotic factors on migration of natural and recombinant plasmids between microorganisms under model ecosystem conditions has been estimated. The transgenic microorganisms with low copy number survived better under introduction conditions in the microcosms studied. This trend has been shown to be independent of the microcosm type and its complexity. В© 2001 COSPAR. Published by Elsevier Science Ltd. All rights reserved.
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