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Microdistribution of 241Am in structures of submerged macrophyte Elodea canadensis growing in the Yenisei River / L. Bondareva [et al.] // Journal of Environmental Radioactivity. - 2010. - Vol. 101, Is. 1. - P16-21, DOI 10.1016/j.jenvrad.2009.08.003 . - ISSN 0265-931X
Кл.слова (ненормированные):
Alpha-track analysis -- Americium -- Elodea canadensis -- Liquid-scintillation spectrometry -- Microdistribution -- Alpha-track analysis -- Elodea canadensis -- Microdistribution -- Scintillation spectrometry -- Track analysis -- Liquids -- Luminescence -- Radioisotopes -- Scintillation -- Spectrometry -- Spectroscopy -- Americium -- americium 241 -- americium -- americium -- bioaccumulation -- experimental study -- leaf -- macrophyte -- mass spectrometry -- morphology -- radionuclide -- spatial distribution -- stem -- submerged vegetation -- tracking -- aquatic flora -- article -- bioaccumulation -- concentration (parameters) -- elodea canadensis -- environmental radioactivity -- isotope analysis -- isotope tracing -- leaf lamina -- leaf surface -- macrophyte -- nonhuman -- plant cell -- plant morphology -- plant stem -- radioisotope distribution -- river -- chemistry -- Hydrocharitaceae -- metabolism -- plant -- plant leaf -- radiation monitoring -- river -- water pollutant -- Eurasia -- Russian Federation -- Yenisei River -- Elodea canadensis -- Americium -- Hydrocharitaceae -- Plant Leaves -- Plant Shoots -- Plant Stems -- Radiation Monitoring -- Rivers -- Water Pollutants, Radioactive
Аннотация: A submerged macrophyte of the Yenisei River, Elodea canadensis, was used to study the microdistribution of the artificial radionuclide 241Am among different components of the plant. The total amount of 241Am added to the experimental system was 1850 В± 31 Bq/L. The total amount of 241Am accumulated by the plants was 182 Bq per sample, or 758,333 В± 385 Bq/kg dry mass. It has been found that the major portion of 241Am accumulated by E. canadensis, up to 85%, was bound to solid components of the cells. It is observed that the microdistribution of 241Am within different components of the submerged plant E. canadensis was not uniform. 241Am distribution vary depending on the age of the leaf blades, the state of the cells and morphological features of the plant stem. В© 2009 Elsevier Ltd. All rights reserved.

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Держатели документа:
Institute of Biophysics, Siberian Branch, Russian Academy of Sciences, 50 Akademgorodok, Krasnoyarsk, 660036, Russian Federation
Chemistry Department, Lomonosov Moscow State University, Leninskie Gory, Moscow 119991, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Bondareva, L.; Vlasova, I.; Mogilnaya, O.; Bolsunovsky, A.; Kalmykov, S.

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New data on accumulation of americium-241 in photoassimilating organs of aquatic plant Elodea canadensis / T. A. Zotina, A. Ya. Bolsunovskij, L. G. Bondareva // Doklady Akademii Nauk. - 2005. - Vol. 405, Is. 2. - С. 274-276 . - ISSN 0869-5652
Кл.слова (ненормированные):
Absorption -- Biomass -- Composition effects -- Microorganisms -- Plants (botany) -- Radioactivity -- Photoassimilation -- Radionuclide accumulation -- Americium
Аннотация: It is shown experimentally that 241Am activity accumulated by elodea is mainly contained in leaves (up to 80%) and about 20% - in the stem. Specific capacity of leaves in respect to americium is considerably dependent on the plant age that is due to formed on elodea leaf surface organo-mineral sediment consisting of mineral salts, epiphytic microorganisms and exometabolites. Am accumulation is larger in the older leaves (located lower on the stem) - nearly 70% of activity of americium accumulated by the whole plant biomass.

Scopus
Держатели документа:
Inst. Biofiziki SO RAN, Krasnoyarsk, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Zotina, T.A.; Bolsunovskij, A.Ya.; Bondareva, L.G.

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Thermoinduction of chlorophyll fluorescence and the age-related condition of higher plant leaves / T. V. Nesterenko, V. N. Shikhov, A. A. Tikhomiro // Russian Journal of Plant Physiology. - 2001. - Vol. 48, Is. 2. - P244-251, DOI 10.1023/A:1009016520582 . - ISSN 1021-4437
Кл.слова (ненормированные):
Development -- Leaf -- Thermoinduction of chlorophyll fluorescence -- Cucumis -- Cucumis sativus -- Embryophyta -- Lycopersicon esculentum -- Sativum -- Triticum aestivum
Аннотация: The age-related changes in the temperature dependence curves (TDC) of chlorophyll fluorescence were studied in leaf segments of wheat (Triticum aestivum L.), tomato (Lycopersicum esculentum Mill.), and cucumber (Cucumis sativum L.) plants grown under controlled photoculture conditions. Three major TDC patterns of chlorophyll fluorescence were identified within the temperature range of 25-70В°C, with each of the patterns corresponding to a certain phase of leaf development. The transition from one type of thermogram to another was a gradual and ordered process. The magnitude of the low-temperature TDC peak increased until leaves completely expanded and declined with leaf senescence. In the course of leaf senescence, the thermograms exhibited an additional shoulder, which further changed into a peak at 55-65В°C with increasing magnitude. Our data provide the basis for assessing leaf age from the type of chlorophyll fluorescence thermogram and the changes in the particular indices characteristic of TDC of chlorophyll fluorescence.

Scopus
Держатели документа:
Institute of Biophysics, Siberian Division, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

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

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Increased BLSS closure using mineralized human waste in plant cultivation on a neutral substrate / S. Ushakova [et al.] // Advances in Space Research. - 2009. - Vol. 44, Is. 8. - P971-978, DOI 10.1016/j.asr.2009.06.003 . - ISSN 0273-1177
Кл.слова (ненормированные):
Biological life support system -- Crops -- Human waste recycling -- Hydroponics -- Biological life support system -- Biological life support systems -- Biological productivity -- Control experiments -- Control plants -- Environmental conditions -- Expanded clay -- Human waste -- Human waste recycling -- Hydroponics -- In-plants -- Macro element -- Mineral element -- Neutral solution -- Nutrient solution -- Photosynthetic apparatus -- Pisum sativum -- Plant growth -- Scale potential -- Spring wheat -- Triticum aestivum -- Vegetation periods -- Water extracts -- Wheat straws -- Clay minerals -- Crops -- Minerals -- Mining -- Nutrients -- Pilot plants -- Plant life extension -- Potassium -- Productivity -- Recycling -- Solvent extraction -- Vegetation -- Water content -- Plant shutdowns
Аннотация: The purpose of this work was to study the full-scale potential use of human mineralized waste (feces and urine) as a source of mineral elements for plant cultivation in a biological life support system (BLSS). Plants that are potential candidates for a photosynthesizing link were grown on a neutral solution containing human mineralized waste. Spring wheat Triticum aestivum L., peas Pisum sativum L. Ambrosia cultivar and leaf lettuce Lactuca sativa L., Vitaminny variety, were used. The plants were grown hydroponically on expanded clay aggregates in a vegetation chamber in constant environmental conditions. During plant growth, a determined amount of human mineralized waste was added daily to the nutrient solution. The nutrient solution remained unchanged throughout the vegetation period. Estimated plant requirements for macro-elements were based on a total biological productivity of 0.04 kg day-1 m-2. As the plant requirements for potassium exceeded the potassium content of human waste, a water extract of wheat straw containing the required amount of potassium was added to the nutrient solution. The Knop's solution was used in the control experiments. The experimental and control plants showed no significant differences in state or productivity of their photosynthetic apparatus. A small decrease in total productivity of the experimental plants was observed, which might result in some reduction of O{cyrillic}2 production in a BLSS. В© 2009 COSPAR.

Scopus
Держатели документа:
Institute of Biophysics, SB, RAS, Akademgorodok, 660036 Krasnoyarsk, Russian Federation
Universite Blaise-Pascal, LGCB, Polytech, BP206, 63174 Aubiere cedex, France
TEC-MCT, ESA/Estec, 1 Keplerlaan, 2201 AZ Noordwijk, Netherlands : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Ushakova, S.; Tikhomirov, A.; Shikhov, V.; Kudenko, Yu.; Anischenko, O.; Gros, J.-B.; Lasseur, Ch.

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Influence of excitation light intensity and leaf age on the slow chlorophyll fluorescence transient in radish / T. V. Nesterenko, A. A. Tikhomirov, V. N. Shikhov // Biophysics (Russian Federation). - 2012. - Vol. 57, Is. 4. - P464-468, DOI 10.1134/S0006350912040136 . - ISSN 0006-3509
Кл.слова (ненормированные):
leaf ontogeny -- light dependence -- slow fluorescence induction -- temporal indices -- Raphanus sativus
Аннотация: The temporal characteristics of the slow phase of chlorophyll fluorescence induction-T0. 5 (half-decay time) and tmin (an integral-based index of the variable emission rate)-as well as the popular amplitude index FP/FS were determined at different excitation light intensities (Iex [400-500 nm] of 20-80 W/m2) in dark-adapted leaves of different age (3-24 days) taken from radish plants grown under continuous light of 100 W/m2 PAR. All the profiles thus obtained were mutually consistent, and the age-related variations were minimized at Iex > 40 W/m2; at that the age-averaged temporal indices proved to be more light-responsive than the standard amplitude ratio. В© 2012 Pleiades Publishing, Ltd.

Scopus
Держатели документа:
Institute of Biophysics, Siberian Branch, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk 660036, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

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

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Chlorophyll fluorescence induction and estimation of plant resistance to stress factors / T. V. Nesterenko, A. A. Tikhomirov, V. N. Shikhov // Zhurnal Obshchei Biologii. - 2007. - Vol. 68, Is. 6. - С. 444-458 . - ISSN 0044-4596
Кл.слова (ненормированные):
chlorophyll -- adaptation -- cucumber -- fluorescence -- growth, development and aging -- metabolism -- physiology -- plant leaf -- review -- Adaptation, Physiological -- Chlorophyll -- Cucumis sativus -- Fluorescence -- Plant Leaves -- Cucumis sativus
Аннотация: The usage of chlorophyll fluorescence induction (CFI) for estimating various types of plant resistance (primary, general, initial, adaptive) to stress factors is reviewed. The necessity of ontogenetic approach (considering the age-specific properties of the photosynthetic apparatus) in determining general and adaptive resistance of plants to prolonged action of stress factors by the CFI method is argued. In the plant Cucumbis sativus L., the possibility is shown of using age-specific qualitative and quantitative traits of leaf CFI (changes in the shape of chlorophyll fluorescence induction curves and in the dynamics of CFI parameters in the course of leaf ontogeny) for comparative study of differences between fully active and stressed plants. Possible criteria are suggested for estimating the effect of outer stress factors by the presence or absence of a steady-state phase in the dynamics of CFI parameters during leaf ontogeny. It is also suggested to use the duration of the steady-state phase following the termination of leaf growth (estimated by the dynamics of the slow phase of CFI as the ratio of fluorescence intensity at the peak P and the steady-state fluorescence intensity, FP/FS, or as the viability index Rfd) and the variability of CFI parameters during this period as qualitative estimates of plant resistance to prolonged action of stress factors.

Scopus
Держатели документа:
Institute of Biophysics, Siberian Branch of Russian Academy of Sciences, Akademgorodok, Krasnoyarsk 660036, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

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

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Ontogenetic approach to the assessment of plant resistance to prolonged stress using chlorophyll fluorescence induction method / T. V. Nesterenko, A. A. Tikhomirov, V. N. Shikhov // Photosynthetica. - 2006. - Vol. 44, Is. 3. - P321-332, DOI 10.1007/s11099-006-0031-8 . - ISSN 0300-3604
Кл.слова (ненормированные):
Leaf age -- Photosystems 1 and 2 -- Radiation colour -- Specific leaf growth rate
Аннотация: The review deals with objective reasons that limit the use of chlorophyll fluorescence induction kinetics (Chl FIK) method in plant ecology. Based on the ontogenetic approach (analysis and comparison of the dynamics of the Chl fluorescence ratio Fp/Fs and physiological characteristics of plant leaves in ontogeny) possible criteria for the estimation of general plant resistance of photosynthetic apparatus (PSA) to prolonged stress affects are proposed. One of these criteria is the presence or absence of a steady-state phase in the dynamics of Chl fluorescence ratio Fp/Fs (or Rfd) of plant leaves after they stop growing. We also propose to use the duration of the steady-state phase and variability of Chl fluorescence ratios Rfd and Fp/Fs in this period for quantitative assessment of plant PSA resistance to prolonged stress during plant leaf ontogeny.

Scopus
Держатели документа:
Institute of Biophysics, Siberian Branch of the Russian Academy of Science, Akademgorodok, Krasnoyarsk, 660036, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

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

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Ontogenetic approach in fluorescence studies of the photosynthetic apparatus of plants under stress / T. V. Nesterenko, A. A. Tikhomirov // Biophysics. - 2005. - Vol. 50, Is. 2. - P314-319 . - ISSN 0006-3509
Кл.слова (ненормированные):
Chlorophyll fluorescence -- Leaf -- Ontogeny -- Stress -- Cucumis sativus
Аннотация: The causes that limit the applicability of the chlorophyll fluorescence induction method to evaluating the state of the photosynthetic apparatus of leaves under long-term stress were analyzed. It was substantiated that it is necessary to use an ontogenetic approach, which consists in more accurately taking into account the age state of the plant leaves studied. Comparison of the calendar and ontogenetic methods for determining the leaf age by the example of cucumber plant under controlled conditions revealed significant differences in the results of evaluating the photosynthetic apparatus of plant leaves by the chlorophyll fluorescence induction method in two variants with contrasting illumination conditions (in white light at 400-700 nm and in stressful red light at 600-700 nm). It was shown that, under long-term stress, the unequivocal interpretation of the chlorophyll fluorescence induction parameters in evaluating the photosynthetic apparatus of plants depends significantly on the choice of the ontogeny period of the leaves of plants being compared and on the accuracy of determining their age. Copyright В© 2005 by MAIK "Nauka/Interperiodica".

Scopus
Держатели документа:
Institute of Biophysics, Siberian Division, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

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

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An ontogenetic approach to the assessment of plant resistance to stress factors based on the method of chlorophyll fluorescence induction. / T. V. Nesterenko, A. A. Tikhomirov // Doklady. Biochemistry and biophysics. - 2003. - Vol. 388. - P4-7 . - ISSN 1607-6729
Кл.слова (ненормированные):
chlorophyll -- adaptation -- aging -- article -- comparative study -- cucumber -- light -- metabolism -- methodology -- photostimulation -- photosynthesis -- physiology -- plant leaf -- radiation dose -- radiation exposure -- spectrofluorometry -- Adaptation, Physiological -- Aging -- Chlorophyll -- Cucumis sativus -- Light -- Photic Stimulation -- Photosynthetic Reaction Center Complex Proteins -- Plant Leaves -- Radiation Dosage -- Spectrometry, Fluorescence

Scopus
Держатели документа:
Institute of Biophysics, Siberian Division, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036 Russia. : 660036, Красноярск, Академгородок, д. 50, стр. 50

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

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10.

Assessment of plant leaf response to long-term exposure at high temperature using the method of thermoinduced chlorophyll fluorescence. / T. V. Nesterenko [et al.] // Doklady. Biochemistry and biophysics. - 2001. - Vol. 378. - P165-169 . - ISSN 1607-6729
Кл.слова (ненормированные):
chlorophyll -- pigment -- article -- biosynthesis -- chemistry -- light -- metabolism -- plant leaf -- plant physiology -- radiation exposure -- spectrofluorometry -- temperature -- thermodynamics -- time -- Chlorophyll -- Light -- Pigments, Biological -- Plant Leaves -- Plant Physiology -- Spectrometry, Fluorescence -- Temperature -- Thermodynamics -- Time Factors

Scopus
Держатели документа:
Institute of Biophysics, Siberian Division, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036 Russia. : 660036, Красноярск, Академгородок, д. 50, стр. 50

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

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11.

The levels of organization of the photosynthetic apparatus and the control of production processes in phytocenoses under artificial-light culture / A. A. Tikhomirov, G. M. Lisovskii // Russian Journal of Plant Physiology. - 2001. - Vol. 48, Is. 3. - P395-399, DOI 10.1023/A:1016682904411 . - ISSN 1021-4437
Кл.слова (ненормированные):
Artificial-light culture -- Photosynthetic apparatus -- Phytocenosis -- Productivity -- Embryophyta
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.

Scopus
Держатели документа:
Institute of Biophysics, Siberian Division, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

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

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12.

Photosynthetic apparatus of cucumber and pea plants grown under red light with discrete or continuous spectra / E. N. Zavorueva [et al.] // Russian Journal of Plant Physiology. - 1996. - Vol. 43, Is. 2. - P191-199 . - ISSN 1021-4437
Кл.слова (ненормированные):
And thermoinduced changes in fluorescence yield -- Cucumis sativum -- Photo -- Photophosphorylation -- Pigments -- Pisum sativum
Аннотация: The effect of light sources with discrete or continuous spectra of red light (50 W/m2, 600-700 nm) on the structural and functional characteristics of chloroplasts were studied in leaves of cucumber (Cucumis sativum L.) plants, which die under strong red light, and pea (Pisum sativum L.) plants, which tolerate red light under the same conditions. Leaf condition was assessed by measuring thermo-and photoinduced changes in the chlorophyll fluorescence yield and the photochemical and photophosphorylating activities of the chloroplasts. Different responses of the pigment apparatus of pea and cucumber plants to red light with continuous or line spectra were revealed. Pea plants responded to discrete-spectrum light by changing P700 content, the ratio of antenna chlorophyll to P700, and the position of the low-temperature peak of the temperature-induced chlorophyll fluorescence yield. In cucumber plants, disturbances in the energy transfer from the short-wavelength pigments to chlorophyll a were observed. In both plants, the effects of line spectrum light on the pigment apparatus were reversible; the ratio of cyclic to noncyclic photophosphorylation, photosynthetic control, and the extent of the coupling of photosynthetic electron transport to photophosphorylation did not change compared to the control light. The need for examining the line spectra of light sources for growing plants under moderate intensities of artificial light (about 50 W/m2 of photosynthetically active radiation) is discussed.

Scopus
Держатели документа:
Institute of Biophysics, Siberian Division, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Zavorueva, E.N.; Nesterenko, T.V.; Volkova, E.K.; Tikhomirov, A.A.

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13.

Plants-rhizospheric organisms interaction in a manmade system with and without biogenous element limitation / L. A. Somova [et al.] // Advances in Space Research. - 1997. - Vol. 20, Is. 10. - P1939-1943 . - ISSN 0273-1177
Кл.слова (ненормированные):
nitrogen -- article -- bacterial count -- biomass -- comparative study -- culture medium -- growth, development and aging -- metabolism -- microbiology -- plant leaf -- plant root -- plant seed -- Pseudomonas fluorescens -- Pseudomonas putida -- wheat -- Biomass -- Colony Count, Microbial -- Culture Media -- Nitrogen -- Plant Leaves -- Plant Roots -- Pseudomonas fluorescens -- Pseudomonas putida -- Seeds -- Triticum
Аннотация: The effect has been studied of inoculation of seeds of wheat with two species of rhizospheric microorganisms, -Pseudomonas fluorescens and Pseudomonas putida - on young plant growth with complete and with nitrogen deficit mineral nutrition. With complete mineral medium, plants grown from seeds inoculated with bacteria of Pseudomonas genus (experiment plants) have been found to have better growth over plants not inoculated with these bacteria (control plants). The experiment plants had increased transpiration and their biomass had higher organic nitrogen content. With nitrogen deficit medium, the plants inoculated with bacteria and those without them, have not revealed changes in growth. Neither case demonstrated competition of microorganisms with plants for nitrogen sources. В© 1997 COSPAR. Published by Elsevier Science Ltd.

Scopus
Держатели документа:
Institute of Biophysics, Krasnoyarsk 6600036, Russian Federation
CEA-Sciences du Vivant, DEVM, CEA/Cadarache, Saint-Paul-Lez-Durance Cedex, France
Computing Center Russian, Krasnoyarsk 6600036, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Somova, L.A.; Pechurkin, N.S.; Polonsky, V.I.; Pisman, T.I.; Sarangova, A.B.; Andre, M.; Sadovskaya, G.M.

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14.

Untangling metabolic and spatial interactions of stress tolerance in plants. 1. Patterns of carbon metabolism within leaves / K. Y. Biel [et al.] // Protoplasma. - 2010. - Vol. 245, Is. 1. - P49-73, DOI 10.1007/s00709-010-0135-7 . - ISSN 0033-183X
Кл.слова (ненормированные):
Carbon metabolism -- Leaf anatomy -- Leaf form and function -- Maximal ecological utility -- Photosynthesis -- Stress tolerance Spinacia oleracea -- aspartate aminotransferase isoenzyme 1 -- bicarbonate -- carbon -- carbon dioxide -- catalase -- chlorophyll -- malate dehydrogenase -- oxygen -- ribulosebisphosphate carboxylase -- vegetable protein -- article -- enzymology -- histology -- light -- metabolism -- oxidation reduction reaction -- photosynthesis -- physiological stress -- physiology -- plant leaf -- spinach -- theoretical model -- Aspartate Aminotransferase, Cytoplasmic -- Bicarbonates -- Carbon -- Carbon Dioxide -- Catalase -- Chlorophyll -- Light -- Malate Dehydrogenase -- Models, Theoretical -- Oxidation-Reduction -- Oxygen -- Photosynthesis -- Plant Leaves -- Plant Proteins -- Ribulose-Bisphosphate Carboxylase -- Spinacia oleracea -- Stress, Physiological -- Spinacia oleracea
Аннотация: The localization of the key photoreductive and oxidative processes and some stress-protective reactions within leaves of mesophytic C3 plants were investigated. The role of light in determining the profile of Rubisco, glutamate oxaloacetate transaminase, catalase, fumarase, and cytochrome-c-oxidase across spinach leaves was examined by exposing leaves to illumination on either the adaxial or abaxial leaf surfaces. Oxygen evolution in fresh paradermal leaf sections and CO2 gas exchange in whole leaves under adaxial or abaxial illumination was also examined. The results showed that the palisade mesophyll is responsible for the midday depression of photosynthesis in spinach leaves. The photosynthetic apparatus was more sensitive to the light environment than the respiratory apparatus. Additionally, examination of the paradermal leaf sections by optical microscopy allowed us to describe two new types of parenchyma in spinach-pirum mesophyll and pillow spongy mesophyll. A hypothesis that oxaloacetate may protect the upper leaf tissue from the destructive influence of active oxygen is presented. The application of mathematical modeling shows that the pattern of enzymatic distribution across leaves abides by the principle of maximal ecological utility. Light regulation of carbon metabolism across leaves is discussed. В© 2010 Springer-Verlag.

Scopus
Держатели документа:
Institute of Basic Biological Problems, Russian Academy of Sciences, Pushchino, Moscow Region 142290, Russian Federation
Biosphere Systems International Foundation, Oro Valley, AZ 85755, United States
International Scientific Centre for Organism Extreme States Research, Krasnoyarsk Scientific Centre, Siberian Branch of the Russian Academy of Sciences, Krasnoyarsk 660036, Russian Federation
Institute of Forest, Siberian Branch of the Russian Academy of Sciences, Krasnoyarsk 660036, Russian Federation
Institute of Biophysics, Siberian Branch of the Russian Academy of Sciences, Krasnoyarsk 660036, Russian Federation
Biocompatible Plant Research Institute, College of Natural Sciences, California State University, Chico, CA 95929-0555, United States : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Biel, K.Y.; Fomina, I.R.; Nazarova, G.N.; Soukhovolsky, V.G.; Khlebopros, R.G.; Nishio, J.N.

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15.

An optimization model of the photosynthetic leaf: the model of optimal photosynthetic CO2 fixation within leaves of mesophytic C3 plants. / V. G. Soukhovolsky [et al.] // Doklady Biological Sciences. - 2002. - Vol. 382. - P28-30 . - ISSN 0012-4966
Кл.слова (ненормированные):
carbon dioxide -- ribulosebisphosphate carboxylase -- article -- biological model -- ecosystem -- light -- metabolism -- photosynthesis -- plant leaf -- radiation exposure -- Carbon Dioxide -- Ecosystem -- Light -- Models, Biological -- Photosynthesis -- Plant Leaves -- Ribulose-Bisphosphate Carboxylase

Scopus
Держатели документа:
Institute of Forest, Siberian Division, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036 Russia. : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Soukhovolsky, V.G.; Fomina, I.R.; Bil, K.; Nishio, J.N.; Khlebopros, R.G.

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16.

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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17.

Light dependence of slow chlorophyll fluorescence induction in the course of wheat leaf ontogeny [Text] / T. V. Nesterenko, V. N. Shikhov, A. A. Tikhomirov // Dokl. Biochem. Biophys. - 2014. - Vol. 454, Is. 1. - P38-41, DOI 10.1134/S1607672914010116. - Cited References: 15 . - ISSN 1607-6729. - ISSN 1608-3091

РУБ Biochemistry & Molecular Biology + Biophysics
Рубрики:
SENESCENCE
DECREASE
LEAVES

WOS,
Scopus
Держатели документа:
[Nesterenko, T. V.
Shikhov, V. N.
Tikhomirov, A. A.] Russian Acad Sci, Siberian Branch, Inst Biophys, Krasnoyarsk 660036, Russia
ИБФ СО РАН : 660036, Красноярск, Академгородок, д. 50, стр. 50

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

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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 [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.

WOS
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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19.

AGE-CHANGES OF SLOW FLUORESCENCE INDUCTION IN WHEAT LEAF CHLOROPHYLL [Text] / T. V. NESTERENKO, F. Y. SIDKO // SOVIET PLANT PHYSIOLOGY. - 1985. - Vol. 32, Is. 3. - P. 344-350. - Cited References: 27 . - ISSN 0038-5719

РУБ Plant Sciences

WOS : 660036, Красноярск, Академгородок, д. 50, стр. 50
Доп.точки доступа:
NESTERENKO, T.V.; SIDKO, F.Y.

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20.

SLOW INDUCTION OF CHLOROPHYLL FLUORESCENCE IN CUCUMBER LEAF ONTOGENY [Text] / T. V. NESTERENKO, F. Y. SIDKO // SOVIET PLANT PHYSIOLOGY. - 1986. - Vol. 33, Is. 4. - P. 514-522. - Cited References: 17 . - ISSN 0038-5719