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Accumulation of 60Co, 90Sr, 137Cs, 238U and transuranic elements by berry shrubs in forest ecosystems of the Yenisei river basin / D. Dementyev, A. Bolsunovsky // Radioprotection. - 2011. - Vol. 46, Is. 6 SUPPL. - S25-S28, DOI 10.1051/radiopro/20116476s . - ISSN 0033-8451
Аннотация: The study investigates accumulation of radionuclides in 5 species of berry shrubs in forests of the Yenisei River basin (the Krasnoyarskii Krai, Russia). Activity concentrations of 60Co, 90Sr, 137Cs, 238U and transuranic elements in aboveground organs of the shrubs have been determined and their transfer factors calculated. Analysis of the calculated TFs shows that shrubs concentrate 90Sr more effectively than other study elements (TF = 0.25-1.9). The highest concentration of 137Cs is recorded in the berries and leaves of Ribes nigrumand Rubus idaeus. For these species, the range of 137Cs TFs (0.006-0.027) overlaps with the range of 238U TFs (0.004-0.018). For the aboveground parts of Ribes nigrum, TFs for transuranic radionuclides (0.01-0.056) are similar to or higher than the TFs for 238U and 137Cs. В© 2011 EDP Sciences.

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

Доп.точки доступа:
Dementyev, D.; Bolsunovsky, A.

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Actinides and other radionuclides in sediments and submerged plants of the Yenisei River / A. Bolsunovsky, L. Bondareva // Journal of Alloys and Compounds. - 2007. - Vol. 444-445, Is. SPEC. ISS. - P495-499, DOI 10.1016/j.jallcom.2007.01.146 . - ISSN 0925-8388
Кл.слова (ненормированные):
Accumulation -- Actinides in aquatic plants and sediments -- Radiochemical and ?-spectrometric investigations -- Sequential extraction technique -- Yenisei River -- Actinides -- Bioaccumulation -- Plants (botany) -- Radioisotopes -- Rivers -- Sampling -- Sediments -- Mining-and-Chemical combine (MCC) -- Radiochemical and spectrometric investigations -- Sediment samples -- Sequential extraction techniques -- Contamination
Аннотация: The source of radioactive contamination of the Yenisei River floodplain, including contamination with actinides, is the Mining-and-Chemical combine (MCC), which has for many years been producing weapons-grade plutonium. Actinides have been detected not only in the soil and sediment of the river but also in the biomass of aquatic plants. The aim of our investigation was to assess the levels of actinides and other radionuclides in sediments and aquatic plants both near the MCC and at a considerable distance from it, down the Yenisei River. Investigations of the Yenisei River sediment samples revealed high activity concentrations of actinides (Pu isotopes and 241Am), which were 100 times higher than their global fallout levels. Sequential extraction of radionuclides from samples of sediments collected near the MCC showed that the amounts of extracted 241Am were the largest (up to 98% of initial activity). It was found that aquatic plants of the Yenisei River collected both near the MCC discharge site and at a distance up to 200 km downstream contained several actinide isotopes. The aquatic moss, Fontinalis antipyretica, was found to contain higher levels of radionuclides than Potamogeton lucens. Leaves of P. lucens contained higher levels of radionuclides, including 239Np, than stems. Sequential extraction of radionuclides from samples of aquatic plants showed that 239Np levels in exchangeable and adsorption fractions of P. lucens biomass were higher than in the respective fractions of F. antipyretica biomass. В© 2007 Elsevier B.V. All rights reserved.

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

Доп.точки доступа:
Bolsunovsky, A.; Bondareva, L.

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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.

Scopus
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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Tolerance of wheat and lettuce plants grown on human mineralized waste to high temperature stress / S. A. Ushakova [et al.] // Advances in Space Research. - 2013. - Vol. 51, Is. 11. - P2075-2083, DOI 10.1016/j.asr.2013.01.017 . - ISSN 0273-1177
Кл.слова (ненормированные):
Air temperature step -- BLSS -- Heat resistance -- Human waste recycling -- Lettuce -- Wheat -- Air temperature -- BLSS -- Human waste -- Lettuce -- Wheat -- Atmospheric temperature -- Electromagnetic field effects -- Electromagnetic fields -- Gas plants -- Heat resistance -- Oxygen supply -- Plants (botany) -- Productivity -- Specific heat -- Thermal stress -- Waste utilization -- Plant shutdowns
Аннотация: The main objective of a life support system for space missions is to supply a crew with food, water and oxygen, and to eliminate their wastes. The ultimate goal is to achieve the highest degree of closure of the system using controlled processes offering a high level of reliability and flexibility. Enhancement of closure of a biological life support system (BLSS) that includes plants relies on increased regeneration of plant waste, and utilization of solid and liquid human wastes. Clearly, the robustness of a BLSS subjected to stress will be substantially determined by the robustness of the plant components of the phototrophic unit. The aim of the present work was to estimate the heat resistance of two plants (wheat and lettuce) grown on human wastes. Human exometabolites mineralized by hydrogen peroxide in an electromagnetic field were used to make a nutrient solution for the plants. We looked for a possible increase in the heat tolerance of the wheat plants using changes in photosynthetically active radiation (PAR) intensity during heat stress. At age 15 days, plants were subjected to a rise in air temperature (from 23 В± 1 В°C to 44 В± 1 В°) under different PAR intensities for 4 h. The status of the photosynthetic apparatus of the plants was assessed by external 2 gas exchange and fluorescence measurements. The increased irradiance of the plants during the high temperature period demonstrated its protective action for both the photosynthetic apparatus of the leaves and subsequent plant growth and development. The productivity of the plants subjected to temperature changes at 250 W m-2 of PAR did not differ from that of controls, whereas the productivity of the plants subjected to the same heat stress but in darkness was halved. В© 2012 COSPAR. Published by Elsevier Ltd.

Scopus
Держатели документа:
SB RAS Institute of Biophysics, 660036 Akademgorodok, Krasnoyarsk, Russian Federation
Institut Pascal, GEPB, UBP, Clermont Universite, F-63000 Clermont-Ferrand, France
UB RAS, Institute of Biology of Komi Science Center, Syktyvkar, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Ushakova, S.A.; Tikhomirov, A.A.; Shikhov, V.N.; Gros, J.-B.; Golovko, T.K.; Dal'Ke, I.V.; Zakhozhii, I.G.

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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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Ontogenetic Approach to Assessment of Chufa Response to Culture Conditions by the Method of Chlorophyll Fluorescence Induction / V. N. Shikhov [et al.] // Russian Journal of Plant Physiology. - 2011. - Vol. 58, Is. 2. - P359-363, DOI 10.1134/S1021443711020191 . - ISSN 1021-4437
Кл.слова (ненормированные):
chlorophyll fluorescence induction -- Cyperus esculentus -- mineral nutrition -- ontogeny -- PAR irradiance -- Cyperus -- Cyperus esculentus
Аннотация: Application of earlier proposed ontogenetic approach to assessment of chufa (Cyperus esculentus L.) response to artificial-light culture growing conditions differing in illuminance and type of mineral nutrition is described. It was shown that, on biological soil-like substrate, plant productivity did not increase as a result of PAR level rising, and life time of chufa leaves was reduced to 11 days as compared with 18 days on the neutral substrate. Changes in the parameters of chlorophyll fluorescence induction (Fv/Fm, Yield = (Fm - Ft)/Fm, and ETR = 0.5 ? 0.84 ? Yield ? PAR) analyzed on the basis of ontogenetic approach show that it can disclose nonoptimal culture conditions. В© 2011 Pleiades Publishing, Ltd.

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

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

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Tolerance of plants grown on human mineralized waste to changes in air temperature / A. A. Tikhomirov [et al.] // International Astronautical Federation - 59th International Astronautical Congress 2008, IAC 2008. - 2008. - Vol. 1: 59th International Astronautical Congress 2008, IAC 2008 (29 September 2008 through 3 October 2008, Glasgow) Conference code: 79748. - P311-320
Кл.слова (ненормированные):
Air temperature -- Alternating electromagnetic field -- Biological life support systems -- Closedness -- Controlled process -- Fluorescence measurements -- Gas exchange -- Heat stress -- High temperature -- Human waste -- Nutrient solution -- Old plants -- Photosynthetic apparatus -- Photosynthetically active radiation -- Plant components -- Plant growth -- Plant wastes -- Protective action -- Reproductive organs -- Temperature changes -- Temperature conditions -- Atmospheric temperature -- Electromagnetic field effects -- Electromagnetic fields -- Gas plants -- Heat resistance -- Hydrogen peroxide -- Oxygen supply -- Plant life extension -- Productivity -- Specific heat -- Thermal stress -- Waste utilization -- Plant shutdowns
Аннотация: The main objective of an LSS is to supply a crew with food, water and oxygen, and to eliminate its waste. The ultimate goal is to achieve the highest degree of closure of the system using controlled processes offering a high level of reliability and flexibility. Enhancement of closedness of biological life support systems (BLSS) including plants relies on increased regeneration of gas, water and plant waste, and utilization of solid and liquid human wastes. Clearly, the robustness of an LSS subjected to stress will be substantially determined by the robustness of the plant components of the phototrophic unit. The aim of the present work was to estimate the heat resistance of plants grown on human wastes. Human exometabolites mineralized by hydrogen peroxide in an alternating electromagnetic field were used to make a nutrient solution for the plants. We looked for a possible increase in the heat resistance of the plants using changes in photosynthetically active radiation (PAR) intensity during heat stress. At ages 15 and 25 days, plants were subjected to a rise in air temperature (from 22-24В°C to 44В°C) under different PAR intensities for 4 hours. The status of the photosynthetic apparatus of the plants was assessed by external CO2 gas exchange and fluorescence measurements. The increased irradiance of the plants during the high temperature period demonstrated its protective action for both the photosynthetic apparatus of the leaves and subsequent plant growth and development. The productivity of the plants subjected to temperature changes at 250 W/m2 of PAR did not differ from that of controls, whereas the productivity of the plants subjected to the same heat stress but in darkness was halved. The heat resistance of the reproductive organs of 25-day-old plants was significantly lower than that of 15-day-old plants subjected to similar light and temperature conditions.

Scopus
Держатели документа:
SB RAS Institute of Biophysics, 660036, Akademgorodok, Krasnoyarsk, Russian Federation
LGCB, Universite Blaise Pascal, Clermont-Ferrand, France
Institute of Biology Komi SC of UrB RAS, Syktyvkar, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Tikhomirov, A.A.; Ushakova, S.A.; Shikhov, V.N.; Gros, J.-B.; Golovko, T.K.; Dal'Ke, I.V.; Zakhozhii, I.G.

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10.

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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11.

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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12.

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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13.

Effect of Growing Conditions on Wheat Hormonal Status and Productivity in Experimental Ecological System / R. A. Karnachuk [et al.] // Russian Journal of Plant Physiology. - 2003. - Vol. 50, Is. 2. - P237-242, DOI 10.1023/A:1022933516663 . - ISSN 1021-4437
Кл.слова (ненормированные):
CO2 -- Illuminance -- Phytohormones -- Productivity -- Triticum aestivum -- Triticum -- Triticum aestivum
Аннотация: The levels of free and bound forms of IAA, ABA, cytokinins (CK), and gibberellins, as well as growth characteristics and productivity were investigated in two wheat lines. The plants were grown under controlled conditions in an artificial ecosystem that allowed the irradiance, CO 2 concentration, and rhizosphere temperature to be changed. The main difference in the hormonal status of leaves of tall spring wheat, line 232, and dwarf wheat, line 95-3, was the absence of GA9 gibberellins in the latter. It was found that the light intensity and temperature of rhizosphere insignificantly affected the balance of endogenous phytohormones and HI in wheat. The elevation of CO2 concentration resulted in a considerable increase in the content of free IAA, an appearance of free GA9, and a rise in the productivity of wheat, line 232. The concentration of CO 2 was shown to be a major parameter that determined HI in the experimental ecological system.

Scopus
Держатели документа:
Dept. of Plant Physiol. and Biotech., Tomsk State University, pr. Lenina 36, Tomsk, 634050, Russian Federation
Institute of Biophysics, Siberian Division, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Environ. Contr. Life Support Sect., ESA, Estec Noorwijk, Netherlands
LGCB, Universite B. Pascal, Clermont-Ferrand, France : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Karnachuk, R.A.; Vaishlya, O.B.; Dorofeev, V.Yu.; Ushakova, S.A.; Tikhomirov, A.A.; Lasseur, Ch.; Gros, J.-B.

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14.

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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15.

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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16.

Fine chloroplast structure in cucumber and pea leaves developed under red light / E. N. Zavorueva [et al.] // Russian Journal of Plant Physiology. - 2000. - Vol. 47, Is. 6. - P740-747 . - ISSN 1021-4437
Кл.слова (ненормированные):
Cucumis sativus -- Pigments -- Pisum sativum -- Red light -- Ultrastructure
Аннотация: Photosynthetic activity, the content of various photosynthetic pigments, and the chloroplast ultrastructure were examined in the leaves of cucumber (Cucumis sativus L.) and pea (Pisum sativum L.) plants of different ages grown under red light (600-700 nm, 100 W/m2). In pea leaves tolerant to red-light irradiation, chloroplast ultrastructure did not essentially change. In the first true leaves of cucumber plants susceptible to red-light irradiation, we observed a considerable increase in the number and size of plastoglobules, the appearance of chloroplasts lacking grana or containing only infrequent grana, and stromal thylakoids. In the upper leaves of 22-day-old cucumber plants, the chloroplast structure was essentially similar to that of the control chloroplasts in white light, and we therefore suppose that these plants have acclimated to red light.

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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.; Ushakova, S.A.; Volkova, E.K.; Tikhomirov, A.A.; Mogil'naya, O.A.; Medvedeva, S.E.

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17.

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.

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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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18.

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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19.

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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20.

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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