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Phytoplankton and Phytoperiphyton Characteristics of Lake Pyasino and Its Tributaries after an Accidental Fuel Spill in 2020 / E. S. Kravchuk, A. V. Kotovshchikov, E. A. Ivanova // Contemp. Probl. Ecol. - 2021. - Vol. 14, Is. 4. - P368-379, DOI 10.1134/S1995425521040065. - Cited References:30. - The study was supported by economic agreement no. 223-EP-2020/07 with the Siberian Branch of the Russian Academy of Sciences. . - ISSN 1995-4255. - ISSN 1995-4263

РУБ Ecology
Рубрики:
OIL-SPILLS
Кл.слова (ненормированные):
fuel pollution -- freshwater ecosystems -- phytoplankton -- phytoperiphyton -- photosynthetic pigments -- Lake Pyasino -- Ambarnaya River
Аннотация: An assessment of the species composition, abundance, biomass, and pigment characteristics of phytoperiphyton and phytoplankton of Lake Pyasino, its tributaries (Bezymyannyi Stream, Daldykan, Ambarnaya, and Norilskaya rivers), and the head of the Pyasina River has been carried out after a manmade accident (a diesel-fuel spill near the city of Norilsk in May 2020). A significant decline in the biomass and changes in the species composition of phytoperiphyton after the water was contaminated by fuel is revealed only near the spillage site (in the Daldykan River and the Ambarnaya River downstream the mouth of the Daldykan). Downstream, in the Ambarnaya mouth zone, as a response to the release of a large amount of nutrients during the decomposition of fuel products and dead organisms, as well as the mechanical cleaning of the bank line, there has been a massive growth of diatom and green algae (Tabularia tabulata, Spirogyra sp.) in the water column and the appearance of indicators of organic pollution (Euglenophyceae and Cryptophyceae). No significant changes in the plankton of Lake Pyasino and the Pyasina River in comparison with the data obtained in the second half of the 20th century (i.e., long before the accident) are found. Species composition and quantitative features, as well as amount and ratio of pigments, characterized the phytoplankton and phytoperiphyton of Lake Pyasino and the Pyasina River as a normally functioning freshwater community of oligotrophic waters. All this indicates the absence of a negative impact of the accidental fuel spill on the ecosystem of Lake Pyasino and the Pyasina River.

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Держатели документа:
Russian Acad Sci, Siberian Branch, Krasnoyarsk Sci Ctr, Inst Biophys,Fed Res Ctr, Krasnoyarsk 660036, Russia.
Russian Acad Sci, Siberian Branch, Inst Water & Environm Problems, Barnaul 656038, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.

Доп.точки доступа:
Kravchuk, E. S.; Kotovshchikov, A. V.; Ivanova, E. A.; Siberian Branch of the Russian Academy of SciencesRussian Academy of Sciences [223-EP-2020/07]

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Influence of NaCl on Productivity and Fluorescence Parameters of Nasturtium officinale R. Br. and Its Relevance to Artificial Closed Ecosystems / A. M. Pavlova, N. A. Gaevskii, O. V. Anishchenko [et al.] // Russ. J. Plant Physiol. - 2021. - Vol. 68, Is. 6. - P1173-1185, DOI 10.1134/S1021443721050137. - Cited References:27. - This work was supported by the fundamental research program of the Russian Academy of Sciences for 2013-2020, project no. 56.1.4 Sustainability of Higher Plant Cenoses Grown on Nutrient Media with Mineralized Organic Waste in Closed Human-Inhabited Ecological Systems. . - ISSN 1021-4437. - ISSN 1608-3407

РУБ Plant Sciences
Рубрики:
CHLOROPHYLL FLUORESCENCE
   SALT STRESS
   TOLERANCE
   PHOTOSYNTHESIS
Кл.слова (ненормированные):
Nasturtium officinale -- glycophyte -- salt tolerance -- photosynthetic -- apparatus -- closed ecosystems
Аннотация: Productivity values, sodium accumulation in aboveground biomass, and photosynthetic indices of watercress (Nasturtium officinale) leaves were investigated under conditions resembling artificial closed ecological systems (CES). The seedlings were grown on nutrient media with various NaCl concentrations (0.7, 1.4, and 1.8 g/L) for 7, 14, and 19 days after transferring them to saline solutions. The productivity of plants on the seventh day of their growth on saline media did not differ from that of control plants. The decrease in plant productivity was noted in all the treatments starting from the 14th day after transferring the plants to saline solutions. When NaCl concentration in the nutrient solution was raised from 0.7 to 1.8 g/L, a significant increase in relative Na+ content in plant tissues was observed, regardless of the duration of NaCl treatment. A substantial decrease in chlorophyll (a + b) to carotenoid content ratio was noted on the seventh and 14th days in plants grown at 1.8 g/L NaCl. In plants treated for 7 days with 0.7 and 1.4 g/L NaCl, the content of chlorophylls a and b and carotenoids was found to increase, which indicates the tolerance of N. officinale to CES conditions. The relative content of chlorophylls a and b in the light-harvesting chlorophyll (a + b) complex was independent of the extent of salinity. The maximum quantum yield of photosystem II reaction in N. officinale plants had typically high values (Y(II)(max) of 0.755 +/- 0.007). Using the Imaging Maxi version of the pulse amplitude-modulated (PAM) fluorometer, it was found that light curves for the effective quantum yield of photochemical and nonphotochemical fluorescence quenching (Y(II) and Y(NPQ), respectively) differed appreciably between the salt-treated and untreated plants in the case of long-term cultivation (19 days) at 0.7 and 1.4 g/L NaCl. The treatment with 1.8 g/L NaCl for the period from 14 to 19 days had no effect on light curves of Y(II) and Y(NPQ). It is argued that N. officinale can be used as a source of NaCl for humans under CES conditions.

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Держатели документа:
Siberian Fed Univ, Krasnoyarsk, Russia.
Russian Acad Sci, Inst Biophys, Siberian Branch, Krasnoyarsk, Russia.
Reshetnev Siberian State Univ Sci & Technol, Krasnoyarsk, Russia.

Доп.точки доступа:
Pavlova, A. M.; Gaevskii, N. A.; Anishchenko, O. V.; Tikhomirova, N. A.; Tikhomirov, A. A.; fundamental research program of the Russian Academy of SciencesRussian Academy of Sciences [56.1.4]

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Deep Physical-Chemical Purification of Gas Medium in Artificial Ecosystems / S. V. Trifonov, V. V. Velichko, N. A. Tikhomirova [et al.] // Dokl. Biochem. Biophys. - 2020. - Vol. 492, Is. 1. - P112-116, DOI 10.1134/S1607672920030059. - Cited References:12. - Works on manufacturing the facility for deep catalytic gas purification and its testing with the wet combustion reactor were performed with the support of the Russian Science Foundation (project no. 14-14-00599P) at the Institute of Biophysics, Siberian Branch, Russian Academy of Sciences. The experiment with wheat plants and the analysis of the pulse-modulated chlorophyll fluorescence was performed under the state assignment (no. VI.56.1.4) at the Institute of Biophysics, Siberian Branch, Russian Academy of Sciences. . - ISSN 1607-6729. - ISSN 1608-3091

РУБ Biochemistry & Molecular Biology + Biophysics

Кл.слова (ненормированные):
catalytic oxidation -- biotechnological life support system -- volatile -- organic compounds -- photosynthetic apparatus
Аннотация: The results of experiments on application of a newly developed facility for oxidation of volatile organic compounds on a platinum catalyst are presented. The feasibility of using this method in artificial ecosystems as a whole and in mass exchange of closed biological-technical life support systems in particular is shown. The possibility of deep purification of gas emitted from the reactor of physical-chemical processing of organic wastes is demonstrated. Wheat growing experiment on using the facility for oxidation of volatile organic compounds in a sealed chamber was performed. No adverse effect of probable toxic oxidation products on wheat plants during a 4-day experiment was determined.

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Держатели документа:
Russian Acad Sci, Inst Biophys, Siberian Branch, Krasnoyarsk, Russia.
Reshetnev Siberian State Univ Sci & Technol, Krasnoyarsk, Russia.

Доп.точки доступа:
Trifonov, S. V.; Velichko, V. V.; Tikhomirova, N. A.; Shikhov, V. N.; Morozov, E. A.; Tikhomirov, A. A.; Russian Science Foundation at the Institute of Biophysics, Siberian Branch, Russian Academy of SciencesRussian Science Foundation (RSF) [14-14-00599P]

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Deep Physical-Chemical Purification of Gas Medium in Artificial Ecosystems / S. V. Trifonov, V. V. Velichko, N. A. Tikhomirova [et al.] // Doklad. Biochem. Biophys. - 2020. - Vol. 492, Is. 1. - P112-116, DOI 10.1134/S1607672920030059 . - ISSN 1607-6729
Кл.слова (ненормированные):
biotechnological life support system -- catalytic oxidation -- photosynthetic apparatus -- volatile organic compounds
Аннотация: Abstract: The results of experiments on application of a newly developed facility for oxidation of volatile organic compounds on a platinum catalyst are presented. The feasibility of using this method in artificial ecosystems as a whole and in mass exchange of closed biological-technical life support systems in particular is shown. The possibility of deep purification of gas emitted from the reactor of physical-chemical processing of organic wastes is demonstrated. Wheat growing experiment on using the facility for oxidation of volatile organic compounds in a sealed chamber was performed. No adverse effect of probable toxic oxidation products on wheat plants during a 4-day experiment was determined. © 2020, Pleiades Publishing, Ltd.

Scopus
Держатели документа:
Institute of Biophysics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Russian Federation
Reshetnev Siberian State University of Science and Technology, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Trifonov, S. V.; Velichko, V. V.; Tikhomirova, N. A.; Shikhov, V. N.; Morozov, E. A.; Tikhomirov, A. A.

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Establishing cycling processes in an experimental model of a closed ecosystem / A. Tikhomirov, S. Ushakova, N. Tikhomirova [et al.] // Acta Astronaut. - 2020. - Vol. 166: 21st International-Academy-of-Astronautics (IAA) Humans in Space (NOV 27-30, 2017, Shenzhen, PEOPLES R CHINA). - P537-544, DOI 10.1016/j.actaastro.2018.08.023. - Cited References:18. - The study was supported by the Russian Science Foundation, Russia (Project No. 14-14-00599 Pi) and carried out in the IBP SB RAS at FRCKRC SB RAS. No competing financial interests exist. . - ISSN 0094-5765. - ISSN 1879-2030

РУБ Engineering, Aerospace
Рубрики:
BIOREGENERATIVE LIFE-SUPPORT
   EXCHANGE
   WASTES
   MASS
Кл.слова (ненормированные):
Experimental model of the closed ecosystem -- Oxidation of human and plant -- wastes -- Plant productivity -- Cycling
Аннотация: The purpose of this study was to investigate mass exchange processes in the experimental model of a closed ecological system intended for an estimated portion of a human in the long-duration (several-month) experiment. The diversity of the vegetable crop community in the system was increased, human wastes were involved in mass exchange processes, and human respiration was periodically connected to the system. The system has been designed to test different prospective technologies for future closed life support systems intended for prolonged autonomous operation in space and terrestrial applications. Three methods of plant cultivation in the conveyer mode have been used: hydroponics on expanded clay aggregate, growing plants on the soil-like substrate, and plant cultivation in aquaculture. The technology of more effective oxidation of organic wastes in a physicochemical processing reactor has been developed. A human exhaled the air into the system and consumed the air from the system. O-2 concentration did not drop below 20.8% and did not rise above 22.6%. CO2 concentration varied between 800 ppm and 2500 ppm. Plants growing under this CO2 range at a preset light irradiance showed optimal photosynthetic activity. The closure coefficients for Ca, Mg, S, N, K and P were above 90%. However, compared with the inflow, only 55% Ca, about 80% Mg, and 75% Na and P were removed from the system. The technological processes developed in this study will need to be modified and improved before they can be used in a full-scale closed biotechnical life support system intended for prolonged operation.

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Держатели документа:
RAS, Inst Biophys, Krasnoyarsk Sci Ctr, Fed Res Ctr,SB, 50-50 Akademgorodok, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Tikhomirov, Alexander; Ushakova, Sofya; Tikhomirova, Natalia; Velichko, Vladimir; Trifonov, Sergey; Anishchenko, Olesya; Russian Science Foundation, RussiaRussian Science Foundation (RSF) [14-14-00599Pi]

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    Effect of the level of irradiance on growth and content of photosynthetic pigments of Canadian Elodea (Elodea Canadensis) in model system “Water-Bottom Sediments” / Y. V. Aleksandrova, T. A. Zotina, N. A. Gaevsky // J. Sib. Fed. Univ. - Biol. - 2020. - Vol. 13, Is. 2. - С. 188-196, DOI 10.17516/1997-1389-0317 . - ISSN 1997-1389
   Перевод заглавия: Влияние светового фактора на рост и содержание фотосинтетических пигментов элодеи канадской (Elodea canadensis) в модельной системе «вода-донные отложения»
Кл.слова (ненормированные):
Aquatic plant -- Bioassay -- Bottom sediment -- Light saturation -- Photosynthetic pigments -- Root length -- Shoot length
Аннотация: Bioassays based on aquatic plants are a convenient tool for studying the quality of bottom sediments. One of the stages in the development of a bioassay is the selection of optimal growth conditions for indicator plants in a model test system. Response of indicator physiological endpoints of Canadian waterweed (Elodea canadensis) to light flux density was investigated to determine optimal irradiance level in a “water - sediment” model system, proposed previously for contact bioassay of natural bulk bottom sediments. Based on the response of shoot and root growth (length and weight), and concentration and ratio of photosynthetic pigments (chl. a, chl. b, and carotenoids) of Elodea to the change of light flux density, no limitation or inhibition of growth and photosynthesis of Elodea was revealed at light flux density from 56 to 143 µmol quanta • m-2 • s-1. Hence, the level of irradiance within this range can be recommended for use in the experimental system proposed for bioassay of bulk bottom sediments using E. canadensis as an indicator. © Siberian Federal University. All rights reserved

Scopus
Держатели документа:
Institute of Biophysics FRC, Krasnoyarsk Science Center SB RAS, Krasnoyarsk, Russian Federation
Siberian Federal University Krasnoyarsk, Russian Federation

Доп.точки доступа:
Aleksandrova, Y. V.; Zotina, T. A.; Gaevsky, N. A.

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Biological effects of the free and embedded metribuzin and tribenuron-methyl herbicides on various cultivated weed species / T. Volova, S. Baranovsky, O. Petrovskaya [et al.] // J. Environ. Sci. Health Part B Pestic. Food Contamin. Agric. Wastes. - 2020, DOI 10.1080/03601234.2020.1807835 . - Article in press. - ISSN 0360-1234
Кл.слова (ненормированные):
degradable P(3HB) -- Metribuzin -- photosynthetic activity -- tribenuron-methyl -- weed growth inhibition -- Electron transport properties -- Photosynthesis -- Plants (botany) -- Quantum chemistry -- Quantum yield -- Weed control -- Biological effects -- Cyclic electron transport -- Degradable polymers -- Herbicidal activity -- Main parameters -- Non-photochemical quenching -- Photosynthetic activity -- Poly-3-hydroxybutyrate -- Herbicides
Аннотация: The present study addresses the herbicidal activity and biological effects of the metribuzin (MET) and tribenuron-methyl (TBM) herbicides used to control various weed species (Amaranthus retroflexus, Sinapis arvensis, and Leucanthemum maximum). The effects of the free herbicides and the herbicides embedded in granules of degradable polymer poly-3-hydroxybutyrate [P(3HB)] blended with birch wood flour were compared. Metribuzin, regardless of the form, caused 100% mortality of the three weeds by day 21. The herbicidal activity of tribenuron-methyl was lower than that of metribuzin, but the embedded TBM was superior to the free herbicide in the length and strength of its action on the weeds. Both metribuzin forms dramatically decreased the main parameters of fluorescence: maximum quantum yield of photosystem-II [Y(II)max], maximum quantum yield of non-photochemical quenching [Y(NPQ)max], and maximum rate of non-cyclic electron transport [ETRmax] and concentrations of chlorophyll a and b. The effect of the embedded TBM on the photosynthetic activity of the weeds was lower in the first two weeks of the growth of herbicide-treated plants but lasted longer than the effect of the free TBM and increased over time. Embedding of metribuzin in the matrix of degradable blend did not decrease its herbicidal activity. © 2020 Taylor & Francis Group, LLC.

Scopus
Держатели документа:
Siberian Federal University, Krasnoyarsk, Russian Federation
Institute of Biophysics SB RAS, Federal Research Center “Krasnoyarsk Science Center SB RAS,”, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Volova, T.; Baranovsky, S.; Petrovskaya, O.; Shumilova, A.; Sukovatyi, A.

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РУБ Environmental Sciences + Public, Environmental & Occupational Health
Рубрики:
SYNTHASE-INHIBITING HERBICIDES
CHLOROPHYLL FLUORESCENCE
RELEASE
Кл.слова (ненормированные):
Metribuzin -- tribenuron-methyl -- degradable P(3HB) -- weed growth -- inhibition -- photosynthetic activity
Аннотация: The present study addresses the herbicidal activity and biological effects of the metribuzin (MET) and tribenuron-methyl (TBM) herbicides used to control various weed species (Amaranthus retroflexus, Sinapis arvensis,andLeucanthemum maximum). The effects of the free herbicides and the herbicides embedded in granules of degradable polymer poly-3-hydroxybutyrate [P(3HB)] blended with birch wood flour were compared. Metribuzin, regardless of the form, caused 100% mortality of the three weeds by day 21. The herbicidal activity of tribenuron-methyl was lower than that of metribuzin, but the embedded TBM was superior to the free herbicide in the length and strength of its action on the weeds. Both metribuzin forms dramatically decreased the main parameters of fluorescence: maximum quantum yield of photosystem-II [Y(II)(max)], maximum quantum yield of non-photochemical quenching [Y(NPQ)(max)], and maximum rate of non-cyclic electron transport [ETRmax] and concentrations of chlorophyllaandb. The effect of the embedded TBM on the photosynthetic activity of the weeds was lower in the first two weeks of the growth of herbicide-treated plants but lasted longer than the effect of the free TBM and increased over time. Embedding of metribuzin in the matrix of degradable blend did not decrease its herbicidal activity.

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

Доп.точки доступа:
Volova, Tatiana; Baranovsky, Sergey; Petrovskaya, Olga; Shumilova, Anna; Sukovatyi, Alexey; Project "Agropreparations of the new generation: a strategy of construction and realization" [074-02-2018-328]; Government of the Russian Federation of April 9, 2010, "On measures designed to attract leading scientists to the Russian institutions of higher learning" [220]

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Estimation of changes in the activity of photosynthetic apparatus of plant leaves based on half-time of fluorescence intensity decrease / T. V. Nesterenko, V. N. Shikhov, A. A. Tikhomirov // Photosynthetica. - 2019. - Vol. 57, Is. 1. - P132-136, DOI 10.32615/ps.2019.005. - Cited References:34 . - ISSN 0300-3604. - ISSN 1573-9058

РУБ Plant Sciences
Рубрики:
ELECTRIC-POTENTIAL DIFFERENCE
CHLOROPHYLL FLUORESCENCE
THYLAKOID
Кл.слова (ненормированные):
chlorophyll fluorescence induction -- leaf age -- photosystem II
Аннотация: The range of variations in parameter tau(0.5) - half-time of fluorescence intensity decrease during the slow phase of chlorophyll fluorescence induction (CFI) - has been studied during ontogeny of leaves of monocotyledonous and dicotyledonous plants in plant communities of different structures. Plants were grown hydroponically on expanded clay aggregate in growth chambers, under PPFD of 400 mu mol(photon) m(-2) s(-1), under controlled conditions. Analysis of the literature data and results of experimental observations of tau(0.5) behavior compared to other CFI parameters, nonphotochemical quenching coefficient, q(N), in particular, leads to the conclusion that parameter tau(0.5) can be effectively used for indirect estimation of variations in the activity of photosynthetic apparatus during ontogeny of plant leaves.

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Держатели документа:
RAS, Krasnoyarsk Sci Ctr SB, Fed Res Ctr, Inst Biophys SB, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Nesterenko, T. V.; Shikhov, V. N.; Tikhomirov, A. A.

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10.

The fluorescence method for determining of photosynthetic apparatus reactivity in plant leaves / T. V. Nesterenko, V. N. Shikhov, A. A. Tikhomirov // Zhurnal Obshchei Biol. - 2019. - Vol. 80, Is. 3. - С. 187-199, DOI 10.1134/S0044459619030060. - Cited References:31 . - ISSN 0044-4596

РУБ Biology
Рубрики:
ELECTRIC-POTENTIAL DIFFERENCE
FREQUENTLY ASKED QUESTIONS
CHLOROPHYLL
Аннотация: Presently, the most promising way of studying, forecasting, and enhancing of organisms' tolerance to harsh environmental impacts is considered to be the estimation of initial functional state of an organism's regulatory systems. To resolve the problem of photosynthetic apparatus (PSA) tolerance to harsh impacts at the level of such a complicated functional system as a plant leaf, it is necessary to assess integral responses of the leaf's PSA to the impact. At that, simple and versatile traits may have certain advantages. At present, chlorophyll fluorescence seems to be one of the main indices of PSA activity, which can be measured relatively fast and easy. One of the possible approaches to operational integrative assessment of PSA activity may consist in usage of the parameters introduced for the curves of chlorophyll fluorescence induction (CFI) slow phase. Temporal patterns of CFI are of special interest. The simplest index T-0.5 (i.e., half-time of chlorophyll fluorescence intensity decrease during the slow phase of CFI) appears to be an integral characteristic of activation rate with regard to a number of photo-assimilation and photo-protective processes in leaves. On basis of the studies, conducted earlier, and published data, we have analyzed the behavior of T-0.5 parameter with comparison to other CFI traits (namely: qN - non-photochemical quenching coefficient, ETR - electron transport rate, Phi(PSII) - effective quantum yield of PSII photochemistry, F-p/F-T ratio) under different conditions. The influence of leaf senescence, changes in intensity of excitation light, slight dehydration of plants and their recovery from water deficiency have been examined. The pattern of T-0.5 behavior, observed in laboratory experiments, and the results of its comparison with other indices of CFI give occasion to propose the usage of T-0.5 for indirect estimation of PSA activity when operational integrative monitoring of PSA state is required. Further studies are necessary for establishing quantitative relationships between PSA activity and fluorescence parameter T-0.5 under specific stress conditions.

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Держатели документа:
RAS, Siberian Branch, Inst Biophys, Acad Gorodok 50-50, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Nesterenko, T. V.; Shikhov, V. N.; Tikhomirov, A. A.

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11.

Analysis of the gas exchange and water balance in a closed experimental model of the artificial ecosystem intended for an estimated portion of a human / S. Ushakova [et al.] // Acta Astronaut. - 2018, DOI 10.1016/j.actaastro.2018.07.022 . - ISSN 0094-5765
Кл.слова (ненормированные):
Experimental model of a closed ecological system -- Higher plant community -- Human respiratory function -- Water balance -- СО2 and О2 gas exchange -- Carbon dioxide -- Evapotranspiration -- Closed ecological systems -- Gas exchange -- Higher plants -- Respiratory function -- Water balance -- Ecosystems
Аннотация: This study was performed to investigate water and gas exchange in the experimental model of a closed ecological system (CES) intended for an estimated portion of a human in the long-duration (several-month) experiment. The diversity of the vegetable conveyor in the system was increased. Human wastes were involved in mass exchange processes, and human respiratory function was periodically connected to the experimental model of a CES. The experimental model of a CES was used to quantify regeneration of the gaseous atmosphere with oxygen and carbon dioxide loops by linking the photosynthesizing compartment with the heterotrophic compartment (soil-like substrate) and by the periodic connection of the human respiratory function. Under the preset light and temperature conditions, atmospheric CO2 concentration in the CES model intended for a portion of a human was maintained at a level that neither limited photosynthetic processes nor was harmful to humans (800–2000 ppm) during the 154-day experiment. At the same time, O2 concentration did not either drop below 20.8% or rise above 22.6%. The amount of the evapotranspiration water collected in the system could satisfy 50% of the daily water requirement of a human (with all the water used and excreted by the human being processed and used to irrigate plants). The evapotranspiration water did not need to be additionally purified before being used by humans. Thus, in the experimental model of the closed ecological system, human oxygen and food requirements (per 0.05 portion of a human) were matched to the function of the heterotrophic compartment and the photosynthesizing activity of the multispecies uneven-aged higher plant community. © 2018 IAA

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Держатели документа:
Institute of Biophysics SB RAS, Federal Research Center “Krasnoyarsk Science Center SB RAS”, 50/50 Akademgorodok, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Ushakova, S.; Tikhomirova, N.; Velichko, V.; Trifonov, S.; Morozov, Y.; Kalacheva, G.; Pavlova, A.; Tikhomirov, A.

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12.

Establishing cycling processes in an experimental model of a closed ecosystem / A. Tikhomirov [et al.] // . - 2018, DOI 10.1016/j.actaastro.2018.08.023 . - ISSN 0094-5765
Кл.слова (ненормированные):
Cycling -- Experimental model of the closed ecosystem -- Oxidation of human and plant wastes -- Plant productivity -- Carbon dioxide -- Cultivation -- Ecosystems -- Life support systems (spacecraft) -- Closed ecological systems -- Cycling -- Expanded clay aggregates -- Experimental modeling -- Photosynthetic activity -- Plant productivity -- Plant wastes -- Terrestrial application -- Plant shutdowns
Аннотация: The purpose of this study was to investigate mass exchange processes in the experimental model of a closed ecological system intended for an estimated portion of a human in the long-duration (several-month) experiment. The diversity of the vegetable crop community in the system was increased, human wastes were involved in mass exchange processes, and human respiration was periodically connected to the system. The system has been designed to test different prospective technologies for future closed life support systems intended for prolonged autonomous operation in space and terrestrial applications. Three methods of plant cultivation in the conveyer mode have been used: hydroponics on expanded clay aggregate, growing plants on the soil-like substrate, and plant cultivation in aquaculture. The technology of more effective oxidation of organic wastes in a physicochemical processing reactor has been developed. A human exhaled the air into the system and consumed the air from the system. O2 concentration did not drop below 20.8% and did not rise above 22.6%. CO2 concentration varied between 800 ppm and 2500 ppm. Plants growing under this CO2 range at a preset light irradiance showed optimal photosynthetic activity. The closure coefficients for Ca, Mg, S, N, K and P were above 90%. However, compared with the inflow, only 55% Ca, about 80% Mg, and 75% Na and P were removed from the system. The technological processes developed in this study will need to be modified and improved before they can be used in a full-scale closed biotechnical life support system intended for prolonged operation. © 2018 IAA

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Держатели документа:
Institute of Biophysics SB RAS, Federal Research Center “Krasnoyarsk Science Center SB RAS”, 50/50, Akademgorodok, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Tikhomirov, A.; Ushakova, S.; Tikhomirova, N.; Velichko, V.; Trifonov, S.; Anishchenko, O.

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13.

Remote Ground-Based and Satellite Monitoring of Vegetation / A. P. Shevyrnogov [et al.] // Her. Russ. Acad. Sci. - 2018. - Vol. 88, Is. 6. - P469-474, DOI 10.1134/S1019331618060138. - Cited References:20. - This study was performed within the RAS Siberian Branch Integrated Basic Research Program "Interdisciplinary Integrative Studies" for 2018-2020 (project no. 74) and a state assignment (state registration AAAA-A17-117013050027-1). . - ISSN 1019-3316. - ISSN 1555-6492

РУБ History & Philosophy Of Science + Multidisciplinary Sciences
Рубрики:
GROWTH
Кл.слова (ненормированные):
agrocenoses -- grass vegetation -- halophytes -- ground spectrometry -- satellite sensing -- chlorophyll photosynthetic potential -- mathematical -- modeling
Аннотация: Prospects for remote ground and satellite sensing to monitor agricultural (agrocenoses) and grass (meadows and steppes) vegetation are considered. This helps assess chlorophyll contents, crop yields, impurities of territories and identify agrocenoses. Investigation of vegetation on salinized soils identified the necessity to consider the succession of limiting factors (temperature and the degree of soil salinization). The results of studies on grassland plant communities in Khakassia based on geobotanical descriptions and ground spectral measurements are presented, allowing the refinement of methods that improve the accuracy of deciphering satellite images of medium and low resolutions.

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Scopus
Держатели документа:
Russian Acad Sci, Siberian Branch, Krasnoyarsk Res Ctr, Inst Biophys, Krasnoyarsk, Russia.

Доп.точки доступа:
Shevyrnogov, A. P.; Botvich, I. Yu.; Kononova, N. A.; Pis'man, T. I.; RAS Siberian Branch Integrated Basic Research Program "Interdisciplinary Integrative Studies" for 2018-2020 [74]

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14.

Interaction effects of light intensity and nitrogen concentration on growth, photosynthetic characteristics and quality of lettuce (Lactuca sativa L. Var. youmaicai) / Y. M. Fu [et al.] // Sci. Hortic. - 2017. - Vol. 214. - P51-57, DOI 10.1016/j.scienta.2016.11.020. - Cited References:43. - This work was supported by the Ministry of Science and Technology of China (No. 2013AA103004) and National Natural Science Foundation of China (No. 31301706). . - ISSN 0304-4238. - ISSN 1879-1018

РУБ Horticulture
Рубрики:
WATER-USE EFFICIENCY
   LIFE-SUPPORT-SYSTEM
   GAS-EXCHANGE
   BLUE-LIGHT
Кл.слова (ненормированные):
Light intensity -- Nitrogen concentration -- Vitamin C -- Vegetable quality -- Facility agriculture
Аннотация: Light intensity and nitrogen concentration of nutrient solution are considered crucial for the contents of vitamin C and nitrate in cultivated leaf vegetables. We here investigated the effects of various combinations of light intensity (60,140 and 220 mu mol m(-2) s(-1)) and nitrogen concentration (7,15 and 23 mmol L-1) of the solution on the growth, photosynthetic characteristics, vitamin C and nitrate content of lettuce. Our results demonstrate that the lettuce had the largest dry biomass at the high illumination of 220 mu mol m(-2) s(-1) and low nitrogen of 7 mmol L-1. The higher light and low nitrogen also contributed to the accumulation of vitamin C and decrease of nitrate in lettuce leaves. The effect of nitrogen supply on chlorophyll concentrations was more efficient under low light than high illumination. Our results reveal that there was an obvious interaction between light intensity and nitrogen available for the photosynthesis, yield and quality of lettuce. This study provides valuable insights into the combinational regulation of light intensity and nitrogen supply for improving growth and nutritional quality of vegetables grown in greenhouse and plant factory. (C) 2016 Elsevier B.V. All rights reserved.

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Держатели документа:
Beihang Univ, Sch Biol Sci & Med Engn, Beijing 100191, Peoples R China.
Beihang Univ, Inst Environm Biol & Life Support Technol, Beijing 100191, Peoples R China.
Beihang Univ, Int Joint Res Ctr Aerosp Biotechnol & Med Engn, Beijing 100191, Peoples R China.
Russian Acad Sci, Inst Biophys, Siberian Branch, Krasnoyarsk, Russia.

Доп.точки доступа:
Fu, Yuming; Li, HongYan; Yu, Juan; Liu, Hui; Cao, ZeYu; Manukovsky, N. S.; Ministry of Science and Technology of China [2013AA103004]; National Natural Science Foundation of China [31301706]

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15.

Effects of PAR intensity and NaCl concentration on growth of Salicornia europaea plants as relevant to artificial ecological systems / N. A. Tikhomirova [et al.] // Russ. J. Plant Physiol. - 2016. - Vol. 63, Is. 4. - P474-482, DOI 10.1134/S1021443716040154 . - ISSN 1021-4437
Кл.слова (ненормированные):
artificial ecosystems -- CO2 exchange -- macroelements -- MDA -- NaCl salinity -- PAR intensity -- photosynthetic pigments -- productivity -- Salicornia europaea
Аннотация: Effects of variable levels of photosynthetically active radiation (PAR) and NaCl concentrations, typical of closed ecological life support systems, on growth of Salicornia europaea L. plants, CO2 exchange, mineral composition, and the content of malondialdehyde (MDA) and photosynthetic pigments were investigated. The plants were grown for 25 days at different salinities of nutrient Knop solution (171, 342, and 513 mM NaCl) under two PAR levels (690 and 1150 ?mol/(m2 s)). At PAR of 690 ?mol/(m2 s), the plant productivity did not show significant changes at increasing salinities; at 1150 ?mol/(m2 s), the maximal productivity was observed at NaCl concentrations of 171 and 342 mM. The increase in NaCl concentration from 171 to 513 mM in the nutrient solution led to a substantial increase in the relative Na content in aboveground organs at PAR level of 1150 ?mol/(m2 s). The MDA content in aboveground organs by the end of the growth period was independent of PAR intensity. The content of photosynthetic pigments in the assimilatory tissue decreased with the increase in salinity from 342 to 513 mM NaCl at PAR level of 1150 ?mol/(m2 s) but not at the lower irradiance. The combination of 1150 ?mol/(m2 s) PAR intensity with the salinity as high as 342 mM NaCl was found to be the most effective for optimal productivity of S. europaea plants. © 2016, Pleiades Publishing, Ltd.

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Держатели документа:
Institute of Biophysics, Siberian Branch, Russian Academy of Sciences, Akademgorodok 50, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Tikhomirova, N. A.; Ushakova, S. A.; Shklavtsova, E. S.; Anishchenko, O. V.; Mikheeva, Y. A.; Tikhomirov, A. A.

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16.

Chlorophyll fluorescence as an indicator of age-dependent changes in photosynthetic apparatus of wheat leaves [Text] / T. V. Nesterenko, V. N. Shikhov, A. A. Tikhomirov // Russ. J. Plant Physiol. - 2015. - Vol. 62, Is. 3. - P307-313, DOI 10.1134/S1021443715020144. - Cited References:30. - This work was supported by the State Assignment, topic no. 56.1.4, section VI of the Program for Basic Research of the State Academies of Sciences for 2013-2020. . - ISSN 1021-4437. - ISSN 1608-3407

РУБ Plant Sciences
Рубрики:
LEAF SENESCENCE
   ONTOGENIC APPROACH
   LIGHT DEPENDENCE
   PARAMETERS
Кл.слова (ненормированные):
Triticum sativus -- chlorophyll fluorescence parameters -- actinic light -- intensity -- leaf ontogeny
Аннотация: Wheat (Triticum sativus L.) seedlings of various ages (2- to 16-day-old plants) were used to study age-dependent changes in the chlorophyll fluorescence induction (CFI) at various light intensities during flu- orescence measurements. Plants were raised in a growth chamber using hydroponics with expanded clay, controlled environmental conditions, and 690 A mu mol/(m(2) s) photon flux density (PFD) of photosynthetically active radiation (PAR). Parameters of CFI were determined under actinic PFD of 380, 580, 820, and 1340 A mu mol/(m(2) s) PAR. The fifth leaf from the stem base, exposed to uniform lighting, was sampled for measurements. This leaf emerged at the plant age of 16 days. Based on fluorescence data, we calculated the maximal photochemical quantum yield of photosystem II (F (v)/F (m)), the effective photochemical quantum yield of PSII (Yield), parameters of photochemical (qP) and non-photochemical (qN and NPQ) quenching of chlorophyll fluorescence, the F (p)/F (t) ratio, and the "vitality index" (fluorescence decrease ratio, R (fd)). At moderate actinic PFD, applied commonly in PAM fluorometers (about 380 A mu mol/(m(2) s)), age-dependent changes in NPQ, F (p)/F (t), and R (fd) were observed. Analysis of CFI parameters in wheat leaves of different ages at PFD increasing from 380 to 820 A mu mol/(m(2) s) revealed that R (fd), NPQ, and qN are the most sensitive markers of the leaf age among all parameters tested. These suitable indicators can be used for rapid assessment of the leaf age.

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Держатели документа:
Russian Acad Sci, Siberian Branch, Inst Biophys, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Nesterenko, T. V.; Shikhov, V. N.; Tikhomirov, A. A.; section VI of the Program for Basic Research of the State Academies of Sciences [56.1.4]

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17.

Effect of light intensity on the age dependence of nonphotochemical fluorescence quenching in wheat leaf [Text] / T. V. Nesterenko, V. N. Shikhov, A. A. Tikhomirov // Photosynthetica. - 2015. - Vol. 53, Is. 4. - P617-620, DOI 10.1007/s11099-015-0133-2. - Cited References:16. - The study was performed within the framework of subject No. 56.1.4., Section VI in accordance with State Program of RAS Fundamental Research for 2013-2020. . - ISSN 0300-3604. - ISSN 1573-9058

РУБ Plant Sciences
Рубрики:
CHLOROPHYLL FLUORESCENCE
   PHOTOSYNTHESIS
   LEAVES
   INDUCTION
   ENERGY
Кл.слова (ненормированные):
chlorophyll fluorescence induction -- leaf age -- photosystem II
Аннотация: The effects of actinic light (AL) intensity on the age dependence of nonphotochemical fluorescence quenching (q(N)) and effective quantum yield in PSII (I broken vertical bar(PSII)) were studied in continuously illuminated wheat leaves of the upper tier. Regular changes were revealed in both age dependence of q(N) at elevated AL intensities and light curves of q(N). These changes are related to alterations in strategies of redistribution and use of absorbed light energy by the photosynthetic apparatus at different stages of wheat leaf development. Unlike I broken vertical bar(PSII), q(N) as a parameter was more sensitive to the differences in the leaf age at a certain range of light intensities. At the same time, the stability of q(N) at moderate light intensities may serve as an indication of leaf maturity.

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Scopus
Держатели документа:
RAS, Inst Biophys, Siberian Branch, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Nesterenko, T. V.; Shikhov, V. N.; Tikhomirov, A. A.; RAS [56.1.4]

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18.

Effects of mineral nutrition conditions on heat tolerance of chufa (Cyperus esculentus L.) plant communities to super optimal air temperatures in the BTLSS / E. S. Shklavtsova [et al.] // Adv. Space Res. - 2014. - Vol. 54, Is. 6. - P1135-1145, DOI 10.1016/j.asr.2014.05.031 . - ISSN 1879-1948
Кл.слова (ненормированные):
Bioregenerative life support system -- Chlorophyll fluorescence -- Cyperus esculentus L. -- Heat shock -- Lipid peroxidation -- Mineralized human wastes -- Atmospheric temperature -- Carbon dioxide -- Lipids -- Metabolism -- Minerals -- Nitrates -- Nitrogen -- Nutrition -- Plants (botany) -- Urea -- Wastes -- Bioregenerative life support systems -- Chlorophyll fluorescence -- Cyperus esculentus -- Heat-shock -- Human waste -- Lipid peroxidation -- Plant shutdowns
Аннотация: The use of mineralized human wastes as a basis for nutrient solutions will increase the degree of material closure of bio-technical human life support systems. As stress tolerance of plants is determined, among other factors, by the conditions under which they have been grown before exposure to a stressor, the purpose of the study is to investigate the level of tolerance of chufa (Cyperus esculentus L.) plant communities grown in solutions based on mineralized human wastes to a damaging air temperature, 45 °C. Experiments were performed with 30-day-old chufa plant communities grown hydroponically, on expanded clay aggregate, under artificial light, at 690 ?mol m-2 s-1 PAR and at a temperature of 25 °C. Plants were grown in Knop's solution and solutions based on human wastes mineralized according to Yu.A. Kudenko's method, which contained nitrogen either as ammonium and urea or as nitrates. The heat shock treatment lasted 20 h at 690 and 1150 ?mol m -2 s-1 PAR. Chufa heat tolerance was evaluated based on parameters of CO2 gas exchange, the state of its photosynthetic apparatus (PSA), and intensity of peroxidation of leaf lipids. Chufa plants grown in the solutions based on mineralized human wastes that contained ammonium and urea had lower heat tolerance than plants grown in standard mineral solutions. Heat tolerance of the plants grown in the solutions based on mineralized human wastes that mainly contained nitrate nitrogen was insignificantly different from the heat tolerance of the plants grown in standard mineral solutions. A PAR intensity increase from 690 ?mol m -2 s-1 to 1150 ?mol m-2 s-1 enhanced heat tolerance of chufa plant communities, irrespective of the conditions of mineral nutrition under which they had been grown. © 2014 COSPAR. Published by Elsevier Ltd. All rights reserved.

Scopus
Держатели документа:
SB RAS Institute of Biophysics, 660036 Akademgorodok, Krasnoyarsk, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Shklavtsova, E.S.; Ushakova, S.A.; Shikhov, V.N.; Anishchenko, O.V.

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19.

Contribution of different groups of autotrophs to the primary production of the mountain Lake Oiskoe [Text] / E. A. Ivanova [et al.] // Contemp. Probl. Ecol. - 2014. - Vol. 7, Is. 4. - P397-409, DOI 10.1134/S1995425514040040. - Cited References: 49. - This work was supported by the Federal Target Program "Scientific and Scientific-Pedagogical Personnel for an Innovative Russia," state contract no. 16.740.11.0484, and the project of the Ministry of Education and Science of the Russian Federation "Ecological and Biochemical Laws of Matter and Energy Transfer in Food Webs of Aquatic Ecosystems." . - ISSN 1995-4255. - ISSN 1995-4263

РУБ Ecology
Рубрики:
DCMU-FLUORESCENCE METHOD
   PHYTOPLANKTON
   CHLOROPHYLL
   PERIPHYTON
   RANGE
Кл.слова (ненормированные):
primary productivity -- phytoplankton -- phytoperiphyton -- macrophytes -- fluorescence -- chlorophyll -- Lake Oiskoe
Аннотация: Productivity characteristics of phytoplankton, phytoperiphyton, and five species of macrophytes in the mountain oligotrophic Lake Oiskoe (Ergaky Mountain Range, West Sayan) have been studied. High primary productivity has been noted for phytoperiphyton and macrophyte communities. Photosynthetic parameters of the macrophyte leaves have been compared using a PAM fluorimeter.

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Держатели документа:
[Ivanova, E. A.
Anishchenko, O. V.
Glushchenko, L. A.
Gaevsky, N. A.
Kolmakov, V. I.] Siberian Fed Univ, Krasnoyarsk 660041, Russia
[Ivanova, E. A.
Anishchenko, O. V.
Kolmakov, V. I.] Russian Acad Sci, Siberian Branch, Inst Biophys, Krasnoyarsk 660036, Russia
ИБФ СО РАН : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Ivanova, E.A.; Anishchenko, O.V.; Glushchenko, L.A.; Gaevsky, N.A.; Kolmakov, V.I.; Federal Target Program "Scientific and Scientific-Pedagogical Personnel for an Innovative Russia" [16.740.11.0484]; Ministry of Education and Science of the Russian Federation

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20.

Effects of mineral nutrition conditions on heat tolerance of chufa (Cyperus esculentus L.) plant communities to super optimal air temperatures in the BTLSS [Text] / E. S. Shklavtsova [et al.] // Adv. Space Res. - 2014. - Vol. 54, Is. 6. - P1135-1145, DOI 10.1016/j.asr.2014.05.031. - Cited References: 26. - The study was performed within the framework of the program of fundamental research for the Russian academies of sciences for 2013-2020, subject No. 56.1.4. . - ISSN 0273-1177. - ISSN 1879-1948

РУБ Astronomy & Astrophysics + Geosciences, Multidisciplinary + Meteorology & Atmospheric Sciences
Рубрики:
LIFE-SUPPORT-SYSTEMS
   CHLOROPHYLL FLUORESCENCE
   STRESS
   WASTE
   WHEAT
   LSS
Кл.слова (ненормированные):
Bioregenerative life support system -- Cyperus esculentus L. -- Heat shock -- Mineralized human wastes -- Chlorophyll fluorescence -- Lipid peroxidation
Аннотация: The use of mineralized human wastes as a basis for nutrient solutions will increase the degree of material closure of bio-technical human life support systems. As stress tolerance of plants is determined, among other factors, by the conditions under which they have been grown before exposure to a stressor, the purpose of the study is to investigate the level of tolerance of chufa (Cyperus esculentus L.) plant communities grown in solutions based on mineralized human wastes to a damaging air temperature, 45 degrees C. Experiments were performed with 30-day-old chufa plant communities grown hydroponically, on expanded clay aggregate, under artificial light, at 690 mu mol m(-2) s(-1) PAR and at a temperature of 25 degrees C. Plants were grown in Knop's solution and solutions based on human wastes mineralized according to Yu.A. Kudenko's method, which contained nitrogen either as ammonium and urea or as nitrates. The heat shock treatment lasted 20 h at 690 and 1150 mu mol m(-2) s(-1) PAR. Chufa heat tolerance was evaluated based on parameters of CO2 gas exchange, the state of its photosynthetic apparatus (PSA), and intensity of peroxidation of leaf lipids. Chufa plants grown in the solutions based on mineralized human wastes that contained ammonium and urea had lower heat tolerance than plants grown in standard mineral solutions. Heat tolerance of the plants grown in the solutions based on mineralized human wastes that mainly contained nitrate nitrogen was insignificantly different from the heat tolerance of the plants grown in standard mineral solutions. A PAR intensity increase from 690 mu mol m(-2) s(-1) to 1150 mu mol m(-2) s(-1) enhanced heat tolerance of chufa plant communities, irrespective of the conditions of mineral nutrition under which they had been grown. (C) 2014 COSPAR. Published by Elsevier Ltd. All rights reserved.

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Держатели документа:
[Shklavtsova, E. S.
Ushakova, S. A.
Shikhov, V. N.
Anishchenko, O. V.] SB RAS Inst Biophys, Krasnoyarsk 660036, Russia
ИБФ СО РАН : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Shklavtsova, E.S.; Ushakova, S.A.; Shikhov, V.N.; Anishchenko, O.V.; program of fundamental research for the Russian academies of sciences [56.1.4]

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