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Characteristics of slow induction curve of chlorophyll fluorescence and CO2 exchange for the assessment of plant heat tolerance at various levels of light intensity [Text] / E. N. Zavorueva, S. A. Ushakova // Russ. J. Plant Physiol. - 2004. - Vol. 51, Is. 3. - P. 294-301, DOI 10.1023/B:RUPP.0000028674.39572.1c. - Cited References: 18 . - ISSN 1021-4437

РУБ Plant Sciences

Кл.слова (ненормированные):
Triticum aestivum -- Raphanus sativus var. minor -- fluorescence -- heat tolerance -- pigments -- CO2 exchange
Аннотация: The heat tolerance of wheat (Triticum aestivum L.) and radish (Raphanus sativus L. var. minor) cenoses exposed to elevated and damaging air temperatures (35 degreesC for 20 h, 45 degreesC for 7 h) under photoculture conditions at various levels of photosynthetically active radiation (PAR) was assessed by measuring characteristics of the slow induction curve of chlorophyll fluorescence at 682 and 734 nm and the CO2 exchange rate. Irrespective of the illumination level, the exposure of the cenoses to 35 degreesC did not induce irreversible changes in the plant photosynthetic apparatus. The lowest extent of damage to wheat and radish cenoses exposed to 45 degreesC was observed at 150 W/m(2) of PAR, whereas the highest damage of the plants was observed at an illumination level that was close to the compensation point of the cenose photosynthesis (50-70 W/m(2) of PAR at air temperature of 24 degreesC). Viability index proved to be the most sensitive. characteristic, compared to other characteristics, which were determined by measuring the slow phase of fluorescence induction at 682 and 734 nm. In the cenoses studied, the pattern of changes in the viability index in response to a stress factor was close to the changes in the photosynthetic rate.

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Держатели документа:
Krasnoyarsk State Architectural & Bldg Acad, Krasnoyarsk, Russia
Russian Acad Sci, Inst Biophys, Siberian Div, Krasnoyarsk 660036, Russia
ИБФ СО РАН : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Zavorueva, E.N.; Ushakova, S.A.

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Remote assay for chlorophyll photosynthetic potential of crops on the example of wheat [Text] / A. F. Sid'ko // Biol. Bull. - 2004. - Vol. 31, Is. 5. - P. 450-456, DOI 10.1023/B:BIBU.0000043769.80086.02. - Cited References: 20 . - ISSN 1062-3590

РУБ Biology

Аннотация: An optical remote assay for biological production of crops in the field during the vegetation period is proposed. Our calculations demonstrate a good correlation between the S(t) value and crop yield (in the range from 0.85 to 0.90); the higher is S(t) for the vegetation period, the higher is the crop yield. S(t) value can be used to calculate the increase in dry and wet biomass for various crops during the whole vegetation period with an error of less than 10-12%. The absolute error of crop yield for 110 cultivars of wheat, oats, and barley during the experimental period was +/-3-3.5 quintal/ha with the mean crop yield of 14-38 quintal/ha.

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

Доп.точки доступа:
Sid'ko, A.F.

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Growth and potential photosynthesis of cyanobacteria are stimulated by viable gut passage in crucian carp [Text] / V. I. Kolmakov, M. I. Gladyshev // Aquat. Ecol. - 2003. - Vol. 37, Is. 3. - P. 237-242, DOI 10.1023/A:1025801326088. - Cited References: 28 . - ISSN 1386-2588

РУБ Ecology + Limnology + Marine & Freshwater Biology
Рубрики:
FISH
   LAKE
   BIOMANIPULATION
   FOOD
   ROACH
   RESTORATION
   COMMUNITIES
   ZOOPLANKTON
   MECHANISMS
   ALGAE
Кл.слова (ненормированные):
Carassius auratus -- cyanobacteria -- gut passage
Аннотация: Growth and potential photosynthetic activity of phytoplankton passed through intestine of crucian carp (Carassius auratus) from a small Siberian reservoir were compared with those of phytoplankton taken the directly from the reservoir. The dominant phytoplankton species in the reservoir, Microcystis aeruginosa, showed a significant increase of growth after the passage. Subdominant Planktothrix agardhii also showed an increase in growth rate, while subdominants Anabaena flos-aquae and Aphanizomenon flos-aquae were not stimulated by the gut passage.

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Держатели документа:
Krasnoyarsk State Univ, Krasnoyarsk 660042, Russia
Russian Acad Sci, Siberian Branch, Inst Biophys, Krasnoyarsk 660036, Russia
ИБФ СО РАН : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Kolmakov, V.I.; Gladyshev, M.I.

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Interrelations of epibiontic microalgae and crustacean zooplankton under conditions of a blooming eutrophic water body [Text] / N. A. Gaevskii [et al.] // Russ. J. Ecol. - 2004. - Vol. 35, Is. 1. - P. 35-41, DOI 10.1023/B:RUSE.0000011107.72097.1c. - Cited References: 22 . - ISSN 1067-4136

РУБ Ecology
Рубрики:
ALGAL EPIBIONT
   DAPHNIA
   HOST
   COMMUNITIES
Кл.слова (ненормированные):
epibiontic microalgae -- Cyclops vicinus -- Daphnia longispina -- mutualism -- algal bloom
Аннотация: The possibility of symbiotic, mutualistic (++) interrelations between epibiontic microalgae (Characidiopsis ellipsoidea, Colacium vesiculosum) and cyclopoids (Cyclops vicinus, Mesocyclops leukarti) in the Bugach recreational reservoir with a bloom of cyanobacteria is demonstrated. Overgrown cyclopoids, compared to those free from microalgae, have advantages in oxygen supply, which may be insufficient in the period of intensive algal bloom. Calculations have shown that oxygen requirements of cyclopoids may be fully satisfied due to C. vesiculosum photosynthetic activity in the dysphotic zone if the density of overgrowth exceeds 1000 algal cells per individual. There is no significant correlation between the natural mortality of crustaceans and the indices of their overgrowth by microalgae.

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Держатели документа:
Krasnoyarsk State Univ, Krasnoyarsk 660041, Russia
Russian Acad Sci, Siberian Div, Inst Biophys, Krasnoyarsk 660036, Russia
ИБФ СО РАН : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Gaevskii, N.A.; Kolmakov, V.I.; Dubovskaya, O.P.; Klimova, E.P.

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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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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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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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QUANTITATIVE DESCRIPTION OF SLOW INDUCTION OF CHLOROPHYLL FLUORESCENCE DURING ONTOGENY OF HIGHER-PLANT LEAVES [Text] / T. V. NESTERENKO, F. Y. SIDKO // RUSSIAN PLANT PHYSIOLOGY. - 1993. - Vol. 40, Is. 1. - P. 5-10. - Cited References: 23 . - ISSN 1070-3292

РУБ Plant Sciences

Кл.слова (ненормированные):
CUCUMIS-SATIVUS -- LEAVES -- ONTOGENY -- CHLOROPHYLL FLUORESCENCE
Аннотация: Additional integral and kinetic parameters of induction curves have been introduced on the basis of analysis of currently employed parameters of slow induction of fluorescence (SIF) for a more complete quantitative description of SIF changes during ontogenesis of higher plant leaves. High sensitivity of the additional parameters to the age state of leaf tissue as compared with previously employed parameters is demonstrated on the example of cucumber leaves (Cucumis sativus L.). Analysis of the relationship between the photosynthetic rate and SIF parameters of separate cucumber leaf disks revealed the presence of a high positive correlation between the photosynthetic rate and the greatest possible average decline in fluorescence intensity during the inductive period for mature regions of the leaf and regions starting to senesce (the correlation coeffcient attained values of 0.95), which indicates the possibility of using the given SIF parameter in further elaboration of methods for estimation of chloroplast photosynthetic activity at the level of the higher plant leaf.

WOS : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
NESTERENKO, T.V.; SIDKO, F.Y.

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PHOTOSYNTHESIS OF CUCUMBER PLANTS FORMED DURING RADIATION OF DIFFERENT SPECTRAL COMPOSITION OF PHOTOSYNTHETIC ACTIVE RADIATION (PAR) [Текст] / A. A. TIKHOMIROV // FIZIOLOGIYA I BIOKHIMIYA KULTURNYKH RASTENII. - 1989. - Vol. 21, Is. 1. - P. 3-8. - Cited References: 0 . - ISSN 0256-1425

РУБ Plant Sciences + Horticulture

WOS : 660036, Красноярск, Академгородок, д. 50, стр. 50
Доп.точки доступа:
TIKHOMIROV, A.A.

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10.

LIGHT-INDUCED-CHANGES IN SIZE OF THE PHOTOSYNTHETIC UNIT OF PHOTOSYSTEM-I IN BLUE-GREEN-ALGAE [Text] / E. N. ZAVORUEVA, V. N. BELYANIN // SOVIET PLANT PHYSIOLOGY. - 1984. - Vol. 31, Is. 3. - P. 326-331. - Cited References: 20 . - ISSN 0038-5719

РУБ Plant Sciences

WOS : 660036, Красноярск, Академгородок, д. 50, стр. 50
Доп.точки доступа:
ZAVORUEVA, E.N.; BELYANIN, V.N.

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11.

Evaluation of the effect of light intensity on the measurement of the photosynthetic rate in plankton microalgae by the chlorophyll fluorescence method [Text] / N. A. Gaevskii [et al.] // Russ. J. Plant Physiol. - 2000. - Vol. 47, Is. 6. - P. 820-825, DOI 10.1023/A:1026671531500. - Cited References: 21 . - ISSN 1021-4437

РУБ Plant Sciences
Рубрики:
QUANTUM YIELDS
   PHYTOPLANKTON
   CHLOROPLASTS
   ALGAE
Кл.слова (ненормированные):
fluorescence -- chlorophyll -- microalgae -- photosynthetic rate -- photosynthetic activity
Аннотация: The use of relative variable fluorescence (RVF) of chlorophyll, as measured in the presence of Diuron, an inhibitor of electron transfer, for the estimation of the photosynthetic activity of plankton microalgae was analyzed under a wide range of light intensities in the PAR region. Oxygen evolution rates (estimated by the method of light and dark bottles and the amperometric method), RVF, and chlorophyll a concentration were measured in parallel in natural algal cenoses and microecosystems. When the previously used regression equation, in the form A = b(DeltaF/F-d)CchlI, where A is O-2 evolution rate (g/(m(3) h), DeltaF/F-d is RVF (relative units), C-chl is chlorophyll a concentration (mg/m(3)), and I is light intensity (W/m(2)), was verified in the PAR region, we observed a nonlinear dependence of the correction coefficient b on I, which can be described by the formula b = 6.227 x 10(3)rootI. This result agrees with the hypothesis that chlorophyll a fluorescence quenching comprises photochemical (qQ) and energy (qE) components. On the basis of the energy model, we determined the upper limit b(max) = 0.003 for light intensity range I < 4.4 W/m(2) and the lower limit b(min) = 0.0003 for I = 400 W/m(2).

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

Доп.точки доступа:
Gaevskii, N.A.; Kolmakov, V.I.; Popel'nitskii, V.A.; Gold, V.M.; Dubovskaya, O.P.

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12.

Recycling efficiencies of C,H,O,N,S, and P elements in a biological life support system based on microorganisms and higher plants [Text] / J. B. Gros [et al.] ; ed.: G Horneck, ME Vazquez, Vazquez, ME // SPACE LIFE SCIENCES: MISSIONS TO MARS, RADIATION BIOLOGY, AND PLANTS AS A FOUNDATION FOR LONG-TERM LIFE SUPPORT SYSTEMS IN SPACE. Ser. ADVANCES IN SPACE RESEARCH : PERGAMON-ELSEVIER SCIENCE LTD, 2003. - Vol. 31: F0 1 and F1 3-F2 3 Symposia of COSPAR Scientific Commission F held at the 33rd COSPAR Scientific Assembly (JUL, 2000, WARSAW, POLAND), Is. 1. - P. 195-199, DOI 10.1016/S0273-1177(02)00739-1. - Cited References: 10 . - ISBN 0273-1177

РУБ Engineering, Aerospace + Astronomy & Astrophysics + Geosciences, Multidisciplinary + Meteorology & Atmospheric Sciences

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. (C) 2002 Published by Elsevier Science Ltd on behalf of COSPAR.

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Держатели документа:
Univ Clermont Ferrand, Lab Genie Chim & Biochim, F-63177 Aubiere, France
European Space Agcy, Estec, YVC, NL-2200 AG Noordwijk, Netherlands
RAS, Siberian Branch, Inst Biophys, Krasnoyarsk 630036, Russia
ИБФ СО РАН : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Gros, J.B.; Poughon, L...; Lasseur, C...; Tikhomirov, A.A.; Horneck, G \ed.\; Vazquez, ME \ed.\

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13.

Tolerance of LSS plant component to elevated temperatures [Text] / S. A. Ushakova, A. A. Tikhomirov // Acta Astronaut. - 2002. - Vol. 50, Is. 12. - P. 759-764, DOI 10.1016/S0094-5765(02)00010-3. - Cited References: 10 . - ISSN 0094-5765

РУБ Engineering, Aerospace

Аннотация: Stability of LSS based on biological regeneration of water, air and food subject to damaging factors is largely dependent on the behavior of the photosynthesizing component represented, mainly, by higher plants. The purpose of this study is to evaluate the tolerance of uneven-aged wheat and radish cenoses to temperature effects different in time and value. Estimation of thermal tolerance of plants demonstrated that exposure for 20 h to the temperature increasing to 45degreesC brought about irreversible damage both in photosynthetic processes (up to 80% of initial value) and the processes of growth and development. Kinetics of visible photosynthesis during exposure to elevated temperatures can be used to evaluate critical exposure time within the range of which the damage of metabolic processes is reversible. With varying light intensity and air temperature it is possible to find a time period admissible for the plants to stay under adverse conditions without considerable damage of metabolic processes. (C) 2002 Elsevier Science Ltd. All rights reserved.

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Держатели документа:
Russian Acad Sci, Inst Biophys, Siberian Branch, Krasnoyarsk 660036, Russia
ИБФ СО РАН : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Ushakova, S.A.; Tikhomirov, A.A.

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14.

The levels of organization of the photosynthetic apparatus and the control of production processes in phytocenoses under artificial-light culture [Text] / A. A. Tikhomirov, G. M. Lisovskii // Russ. J. Plant Physiol. - 2001. - Vol. 48, Is. 3. - P. 395-399, DOI 10.1023/A:1016682904411. - Cited References: 21 . - ISSN 1021-4437

РУБ Plant Sciences

Кл.слова (ненормированные):
photosynthetic apparatus -- phytocenosis -- productivity -- artificial-light culture
Аннотация: The processes limiting the production in higher plant phytocenoses under an artificial-light culture are analyzed in relation to the multilevel organization of the photosynthetic apparatus (PA). The authors consider the feasibility of overcoming these limitations by optimizing the physical parameters of irradiation (the structure of the light spectrum, the rate, and the ratio of radiation fluxes in photosynthetically active radiation (PAR) and infrared (IR) regions) at the molecular, leaf, plant, and cenotic levels of PA organization. To illustrate this approach, the authors used a complex experiment in an artificial ecosystem to evaluate the efficiency of the light control of production processes in multispecies phytocenoses by alleviating or removing the factors that limit plant production at the various levels of PA organization. An artificial-light culture is seen as an instrument for solving several problems of theoretical and applied plant physiology and related disciplines in the future.

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

Доп.точки доступа:
Tikhomirov, A.A.; Lisovskii, G.M.

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15.

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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16.

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.

WOS
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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17.

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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18.

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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19.

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.

WOS
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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20.

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.

WOS
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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