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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Gitel'son I.I., Tikhomirov A.A., Parshina O.V., Ushakova S.A., Kalacheva G.S.
Заглавие : Volatile metabolites and external CO2 exchange of wheat cenoses under optimal conditions and thermal stress
Место публикации : Applied Biochemistry and Microbiology. - 2002. - Vol. 38, Is. 1. - С. 78-82. - ISSN 00036838 (ISSN) , DOI 10.1023/A:1013212907872
Ключевые слова (''Своб.индексиров.''): carbon dioxide--volatile agent--article--biosynthesis--carbon dioxide transport--chemical composition--concentration (parameters)--controlled study--cultivar--metabolite--nonhuman--photosynthesis--photosynthetically active radiation--plant metabolism--qualitative analysis--quantitative analysis--stress--temperature sensitivity--thermal exposure--thermostability--wheat--rickettsia sp. par--triticum--triticum aestivum
Аннотация: The effects of elevated temperature (35 and 45В°C) on photosynthesis, respiration, and both the qualitative and quantitative compositions of volatile emissions (VE) of wheat (Triticum aestuvum L. cultivar 232) cenoses at light intensities of 70, 150, or 240 W/m2 of photosynthetically available radiation (PAR) were studied. At a PAR of 240 W/m2, the thermal stabilities of photosynthesis and respiration increased at 35В°C and decreased at 45В°C. Elevated temperatures nonuniformly changed the rates and direction of VE syntheses. In this process, the highest increase in VE evolution was observed at 70 W/m2 and 35В°C; the lowest, at 240 W/m2. In addition, the concentrations and composition of VE during the repair period differed from the initial values.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Purtov K.V., Petushkov V.N., Baranov M.S., Mineev K.S., Rodionova N.S., Kaskova Z.M., Tsarkova A.S., Petunin A.I., Bondar V.S., Rodicheva E.K., Medvedeva S.E., Oba Y., Oba Y., Arseniev A.S., Lukyanov S., Gitelson J.I., Yampolsky I.V.
Заглавие : The Chemical Basis of Fungal Bioluminescence
Место публикации : Angew. Chem. Int. Ed. - 2015. - Vol. 54, Is. 28. - С. 8124-8128. - ISSN 14337851 (ISSN) , DOI 10.1002/anie.201501779
Ключевые слова (''Своб.индексиров.''): bioluminescence--bioorganic chemistry--biosynthesis--luciferin--natural products--biochemistry--bioluminescence--biosynthesis--metabolites--phosphorescence--biochemical mechanisms--bioorganic chemistry--luciferin--natural products--plant secondary metabolites--structural similarity--fungi
Аннотация: Many species of fungi naturally produce light, a phenomenon known as bioluminescence, however, the fungal substrates used in the chemical reactions that produce light have not been reported. We identified the fungal compound luciferin 3-hydroxyhispidin, which is biosynthesized by oxidation of the precursor hispidin, a known fungal and plant secondary metabolite. The fungal luciferin does not share structural similarity with the other eight known luciferins. Furthermore, it was shown that 3-hydroxyhispidin leads to bioluminescence in extracts from four diverse genera of luminous fungi, thus suggesting a common biochemical mechanism for fungal bioluminescence. © 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Baker S., Prudnikova S. V., Volova T.
Заглавие : Siberian plants: untapped repertoire of bioactive endosymbionts
Место публикации : Front. Biol.: Higher Education Press, 2018. - С. 1-11. - ISSN 16747984 (ISSN) , DOI 10.1007/s11515-018-1483-5
Ключевые слова (''Своб.индексиров.''): bioactive metabolite--endophyte--endosymbiont--novel compound--siberian plant
Аннотация: Background: Endosymbionts are microorganisms present in all plant species, and constitute the subject of interest among the scientific community. These symbionts have gained considerable attention in recent years, owing to their emerging biological roles. Global challenges, such as antimicrobial resistance, treatment of infectious diseases such as HIV and tuberculosis, cancer, and many genetic disorders, exist. Endosymbionts can help address these challenges by secreting valueadded bioactive compounds with various activities. Objective: Herein, we describe the importance of plants inhabiting Siberian niches. These plants are considered to be among the least studied organisms in the plant kingdom worldwide. Barcoding these plants can be of interest for exploring bioactive endosymbionts possessing myriad biological properties. Methods: A systematic survey of relevant scientific reports was conducted using the PubMed search engine. The reports were analyzed, and compiled to draft this review. Results: The literature survey on Siberian plants regarding endosymbionts included a few reports, since extremely few exploratory studies have been conducted on the plants in these regions. Studies on the endosymbionts of these plants are highly valuable, as they report potent endosymbionts possessing numerous biological properties. Based on these considerations, this review aims to create awareness among the global scientific community working on related areas. Conclusion: This review could provide the basis for barcoding novel endosymbionts of Siberian plants and their ecological importance, which can be exploited in various sectors. The main purpose of this review is to create awareness of Siberian plants, which are among the least studied organisms in the plant kingdom, with respect to endosymbionts, among the scientific community. © 2018 Higher Education Press and Springer-Verlag GmbH Germany, part of Springer Nature
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Rogozin D. Y., Bulkhin A. O., Zykov V. V., Ivanova E. A., Darin A. V., Kalugin I. A., Baturina O. A., Kabilov M. R.
Заглавие : Long-Chain Alkenones in Saline Meromictic Lakes of the North Minusinsk Depression (Southern Siberia): First Knowledge and Possible Correlation with Water-Level Dynamics
Место публикации : Contemp. Probl. Ecol.: Pleiades journals, 2020. - Vol. 13, Is. 6. - С. 643-655. - ISSN 19954255 (ISSN), DOI 10.1134/S199542552006013X
Аннотация: Abstract: Long-chain alkenones (LCAs)—lipides produced by some microalgae of the Haptophyta group in seas and continental water bodies—are promising paleomarkers of climate changes because they are well-preserved in bottom sediments. The hydrocarbon chain and the degree of unsaturation of double bonds of this class of lipides can vary depending on habitat conditions of their producers. For the first time, we have discovered LCAs in the bottom sediments of two saline meromictic lakes Shira and Uchum located in arid steppes of southern Siberia (the North Minusinsk Depression) and estimated the distribution of their total content, length, and the degree of unsaturation. The highly abundant population of producers of LCAs—haptophyte algae of the genus Isochrysis (Haptophyta)—is revealed in the water column of Lake Uchum. It is shown that the species composition of the haptophyte algae and composition of the LCAs in the lakes under study are similar to those in saline stratified lakes of North America (Saskatchewan, Canada) with a similar climate and salt composition. The abundance of the С37:4 alkenone in the bottom sediments in the last 100 years reflected the variations in lake salinity caused by the documented changes in the water level. In this way, it is shown that the LCAs may be used as a paleomarker of climate-driven changes in the water level of the saline lakes in southern Siberia. © 2020, Pleiades Publishing, Ltd.
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Pisman T.I., Somova L.A.
Заглавие : Interaction of a mixed yeast culture in an "autotroph-heterotroph" system with a closed atmosphere cycle and spatially separated components
Колич.характеристики :6 с
Место публикации : SPACE LIFE SCIENCES: CLOSED ARTIFICIAL ECOSYSTEMS AND LIFE SUPPORT SYSTEMS. Ser. ADVANCES IN SPACE RESEARCH: PERGAMON-ELSEVIER SCIENCE LTD, 2003. - Vol. 31: Meeting of F4 1 Session of the 34th Scientific Assembly of COSPAR (OCT, 2002, HOUSTON, TEXAS), Is. 7. - P1751-1756. - ISBN 0273-1177, DOI 10.1016/S0273-1177(03)00116-9
Примечания : Cited References: 10
Аннотация: The study considers an experimental model of the "autotroph-heterotroph" system with a closed atmosphere cycle, in which the heterotrophic link is a mixed yeast population. The autotrophic link is represented by the algae Chlorella vulgaris and the heterotrophic link by the yeasts Candida utilis and Candida guilliermondii. The controls are populations of Chlorella and the same yeasts isolated from the atmosphere. It has been shown that the outcome of competition in the heterotrophic link depends on the strategy of the yeast population towards the substrate and oxygen. The C. utilis population quickly utilizes the substrate as it is an r-strategist and is less sensitive to oxygen deficiency. The C guilliermondii population consumes low concentrations of the substrate because it is a K-strategist, but it is more sensitive to oxygen deficiency. That is why, in the "autotroph-heterotroph" system with a closed gas cycle, after a considerable amount of the substrate has been consumed, the C. guilliermondii population becomes more competitive that the C utilis population. In the culture of yeasts, isolated from the atmosphere, the C utilis population finds itself in more favorable conditions due to oxygen deficiency. The system with a complex heterotrophic component survive longer than a system whose heterotrophic component is represented by only one yeast species. This is explained for by the positive metabolite interaction of yeasts and a more complete utilization of the substrate by a mixed culture of yeasts featuring different strategies towards the substrate. (C) 2003 COSPAR. Published by Elsevier Science Ltd. All rights reserved.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Pisman T.I., Somova L.A.
Заглавие : Interaction of a mixed yeast culture in an "autotroph-heterotroph" system with a closed atmosphere cycle and spatially separated components
Место публикации : Advances in Space Research. - 2003. - Vol. 31, Is. 7. - С. 1751-1756. - ISSN 02731177 (ISSN) , DOI 10.1016/S0273-1177(03)00116-9
Ключевые слова (''Своб.индексиров.''): metabolism--oxygen--substrates--yeast--closed atmosphere cycle--space research--carbon dioxide--oxygen--biosphere--anaerobic growth--article--biomass--candida--chlorella--comparative study--culture medium--ecosystem--growth, development and aging--metabolism--microclimate--anaerobiosis--biomass--candida--carbon dioxide--chlorella--culture media--ecological systems, closed--ecosystem--environment, controlled--oxygen
Аннотация: The study considers an experimental model of the "autotroph-heterotroph" system with a closed atmosphere cycle, in which the heterotrophic link is a mixed yeast population. The autotrophic link is represented by the algae Chlorella vulgaris and the heterotrophic link by the yeasts Candida utilis and Candida guilliermondii. The controls are populations of Chlorella and the same yeasts isolated from the atmosphere. It has been shown that the outcome of competition in the heterotrophic link depends on the strategy of the yeast population towards the substrate and oxygen. The C. utilis population quickly utilizes the substrate as it is an r-strategist and is less sensitive to oxygen deficiency. The C. guilliermondii population consumes low concentrations of the substrate because it is a K-strategist, but it is more sensitive to oxygen deficiency. That is why, in the "autotroph-heterotroph" system with a closed gas cycle, after a considerable amount of the substrate has been consumed, the C. guilliermondii population becomes more competitive that the C. utilis population. In the culture of yeasts, isolated from the atmosphere, the C. utilis population finds itself in more favorable conditions due to oxygen deficiency. The system with a complex heterotrophic component survive longer than a system whose heterotrophic component is represented by only one yeast species. This is explained for by the positive metabolite interaction of yeasts and a more complete utilization of the substrate by a mixed culture of yeasts featuring different strategies towards the substrate. В© 2003 COSPAR. Published by Elsevier Science Ltd. All rights reserved.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Kotlobay A. A., Sarkisyan K. S., Mokrushina Y. A., Marcet-Houben M., Serebrovskaya E. O., Markina N. M., Somermeyer L. G., Gorokhovatsky A. Y., Vvedensky A., Purtov K. V., Petushkov V. N., Rodionova N. S., Chepurnyh T. V., Fakhranurova L. I., Guglya E. B., Ziganshin R., Tsarkova A. S., Kaskova Z. M., Shender V., Abakumov M., Abakumova T. O., Povolotskaya I. S., Eroshkin F. M., Zaraisky A. G., Mishin A. S., Dolgov S. V., Mitiouchkina T. Y., Kopantzev E. P., Waldenmaier H. E., Oliveira A. G., Oba Y., Barsova E., Bogdanova E. A., Gabaldon T., Stevani C. V., Lukyanov S., Smirnov I. V., Gitelson J. I., Kondrashov F. A., Yampolsky I. V.
Заглавие : Genetically encodable bioluminescent system from fungi
Место публикации : Proc. Natl. Acad. Sci. U. S. A.: National Academy of Sciences, 2018. - Vol. 115, Is. 50. - С. 12728-12732. - ISSN 00278424 (ISSN) , DOI 10.1073/pnas.1803615115
Ключевые слова (''Своб.индексиров.''): bioluminescence--fungal luciferase--fungal luciferin biosynthesis
Аннотация: Bioluminescence is found across the entire tree of life, conferring a spectacular set of visually oriented functions from attracting mates to scaring off predators. Half a dozen different luciferins, molecules that emit light when enzymatically oxidized, are known. However, just one biochemical pathway for luciferin biosynthesis has been described in full, which is found only in bacteria. Here, we report identification of the fungal luciferase and three other key enzymes that together form the biosynthetic cycle of the fungal luciferin from caffeic acid, a simple and widespread metabolite. Introduction of the identified genes into the genome of the yeast Pichia pastoris along with caffeic acid biosynthesis genes resulted in a strain that is autoluminescent in standard media. We analyzed evolution of the enzymes of the luciferin biosynthesis cycle and found that fungal bioluminescence emerged through a series of events that included two independent gene duplications. The retention of the duplicated enzymes of the luciferin pathway in nonluminescent fungi shows that the gene duplication was followed by functional sequence divergence of enzymes of at least one gene in the biosynthetic pathway and suggests that the evolution of fungal bioluminescence proceeded through several closely related stepping stone nonluminescent biochemical reactions with adaptive roles. The availability of a complete eukaryotic luciferin biosynthesis pathway provides several applications in biomedicine and bioengineering. © 2018 National Academy of Sciences. All Rights Reserved.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Pisman T.I.
Заглавие : Experimental and mathematical model of the interactions in the mixed culture of links in the "producer-consumer" cycle
Колич.характеристики :7 с
Коллективы : Russia Foundational Research Foundation and Krasnoyarsk Regional Science Foundation [07-05-96807]
Место публикации : Adv. Space Res.: ELSEVIER SCI LTD, 2009. - Vol. 44, Is. 2. - С. 177-183. - ISSN 0273-1177, DOI 10.1016/j.asr.2009.01.022
Примечания : Cited References: 20. - This study is supported by the grant of Russia Foundational Research Foundation and Krasnoyarsk Regional Science Foundation No. 07-05-96807.
Предметные рубрики: COMPETITION
Ключевые слова (''Своб.индексиров.''): competition--metabolite interaction--invertebrates--mixed culture
Аннотация: The paper presents a experimental and mathematical model of interactions between invertebrates (the ciliates Paramecium caudatum and the rotifers Brachionus plicatilis) in the "producer-consumer" aquatic biotic cycle with spatially separated components. The model describes the dynamics of the mixed culture of ciliates and rotifers ill the "consumer" component, feeding on the mixed algal culture of the "producer" component. It has been found that metabolites of the algae Seenedesmus produce an adverse effect on the reproduction of the ciliates P. caudatum. Taking into account this effect, the results of investigation of the mathematical model were in qualitative agreement with the experimental results. In the "producer-consumer" biotic cycle it was shown that coexistence is impossible ill the mixed culture of invertebrates of the "consumer" component. The ciliates P. caudatum are driven out by the rotifers B. plicatilis. (C) 2009 Published by Elsevier Ltd on behalf of COSPAR.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Shatilina Z.M., Gubanov M.V., Zadereev E.S., Pavlichenko V.V., Axenov-Gribanov D.V., Sapozhnikova E.A., Protopopova M.V., Bedulina D.S., Timofeyev M.A.
Заглавие : Comparative study of Thermoresistances' cellular mechanisms in representatives of the Gammarus lacustris Sars populations inhabiting Saline Lake Shira (Republic of Khakassia) and a fresh water body in the Cis-Baikal region
Место публикации : Doklady Biological Sciences. - 2010. - Vol. 434, Is. 1. - С. 359-362. - ISSN 00124966 (ISSN) , DOI 10.1134/S0012496610050182
Ключевые слова (''Своб.индексиров.''): antioxidant--catalase--fresh water--heat shock protein 70--reactive oxygen metabolite--sea water--amphipoda--animal--article--biosynthesis--comparative study--ecosystem--heat--metabolism--russian federation--amphipoda--animals--antioxidants--catalase--ecosystem--fresh water--hot temperature--hsp70 heat-shock proteins--reactive oxygen species--seawater--siberia--gammarus--gammarus lacustris
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10.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Pisman T.I., Bogdanova O.N.
Заглавие : A mathematical model of the interactions in the mixed culture of invertebrates and algae in the "producer-consumer" aquatic biotic cycle
Колич.характеристики :9 с
Место публикации : Aquat. Ecol.: KLUWER ACADEMIC PUBL, 2004. - Vol. 38, Is. 3. - P415-423. - ISSN 1386-2588
Примечания : Cited References: 19
Предметные рубрики: RESOURCE COMPETITION
Ключевые слова (''Своб.индексиров.''): competition--metabolite interaction--principle of competitive exclusion
Аннотация: This paper presents a mathematical model of interactions between two herbivorous invertebrates (ciliate Paramecium caudatum and rotifer Brachionus plicatilis) and two planktonic algae (Chlorella vulgaris and Scenedesmus quadricauda) spatially segregated in two compartments of a chemostat - type experimental microcosm system. The model mimics a "producer-consumer" aquatic biotic cycle, describing the dynamics of the mixed culture of ciliates and rotifers, as "consumer" compartment, feeding on the mixed algal culture, as "producer" compartment, under N-limiting conditions. We experimentally found that metabolites of the alga Scenedesmus produce an adverse effect on the reproduction of ciliate Paramecium. Taking this effect into account improved the behavior of the model, the results of which came into qualitative agreement with the experimental results. Both our experimental and modeling approaches demonstrated that, even in conditions of a spatially - segregated "producer-consumer" biotic cycle, species coexistence is impossible either in the mixed algal culture or in the mixed invertebrate culture. Scenedesmus excluded Chlorella, whereas Brachionus excluded Paramecium.
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11.

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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