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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Zotina T.A., Kalacheva G.S., Bolsunovsky A.Y.
Заглавие : Biochemical fractionation and cellular distribution of americium and plutonium in the biomass of freshwater macrophytes
Место публикации : Journal of Radioanalytical and Nuclear Chemistry. - 2011. - Vol. 290, Is. 2. - С. 447-451. - ISSN 02365731 (ISSN) , DOI 10.1007/s10967-011-1228-2
Ключевые слова (''Своб.индексиров.''): 238, 242pu--241am--carbohydrates--cellulose--fractionation--protein--submerged macrophyte--americium 241--plutonium--plutonium 238--plutonium 242--polysaccharide--unclassified drug--article--bioaccumulation--biomass--cellular distribution--ceratophyllum demersum--controlled study--cytosol--elodea canadensis--fontinalis antipyretica--fractionation--freshwater species--macrophyte--moss--myriophyllum spicatum--nonhuman--plant cell--radiation absorption--radioactivity--shoot
Аннотация: Accumulation of americium ( 241Am) and plutonium ( 238,242Pu) and their distribution in cell compartments and biochemical components of the biomass of freshwater aquatic plants Elodea canadensis, Ceratophyllum demersum and Myrioplyllum spicatum and aquatic moss Fontinalis antipyretica have been investigated in laboratory experiments. Americium and plutonium taken up from water by Elodea canadensis apical shoots were mainly absorbed by structural components of plant cells (90% for 241Am; 89% for 238Pu and 82-87% for 242Pu). About 10-18% of isotope activity was recorded in the cytosol fraction. The major concentration (76-92%) of americium was bound to cell wall cellulose-like polysaccharides of Elodea canadensis, Myriophyllum spicatum, Ceratophyllum demersum and Fontinalis antipyretica, 8-24% of americium activity was registered in the fraction of proteins and carbohydrates, and just a minor concentration (<1%) in the lipid fraction. The distribution of plutonium in the biomass fractions of Elodea was similar to that of americium. Hence, americium and plutonium had the highest affinity to cellulose-like polysaccharides of cell walls of freshwater submerged macrophytes. В© 2011 Akademiai Kiado, Budapest, Hungary.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Zotina T.A., Trofimova E.A., Bolsunovsky A.Y., Anishenko O.V.
Заглавие : Experimental estimation of the possible use of submersed macrophytes for biotesting bottom sediments of the Yenisei River
Колич.характеристики :12 с
Коллективы : Russian Foundation for Basic Research [14-14-00076]; "Biological Diversity" program of the Presidium of the Russian Academy of Sciences [30.5]
Место публикации : Contemp. Probl. Ecol.: MAIK NAUKA/INTERPERIODICA/SPRINGER, 2014. - Vol. 7, Is. 4. - С. 410-421. - ISSN 1995-4255, DOI 10.1134/S1995425514040131. - ISSN 1995-4263
Примечания : Cited References: 23. - We thank the staff of the Radioecology Laboratory and the Analytical Laboratory, Institute of Biophysics, Siberian Branch, Russian Academy of Sciences, for gamma ray spectrometric and chemical analysis of the samples. This study is supported in part by the Russian Foundation for Basic Research, project no. 14-14-00076, and by "Biological Diversity" program no. 30.5 of the Presidium of the Russian Academy of Sciences.
Предметные рубрики: MYRIOPHYLLUM-SPICATUM
TOXICITY
SENSITIVITY
GROWTH
EXPOSURE
ATRAZINE
QUALITY
WATERS
TESTS
Ключевые слова (''Своб.индексиров.''): elodea canadensis--myriophyllum spicatum--bottom sediments--toxicity--technogenic radionuclides--heavy metals--biogens
Аннотация: The laboratory testing of bottom sediments (BSs) from the Yenisei River containing different concentrations of technogenic radionuclides, heavy metals, and biogenic elements (N and P) based on aquatic such plants as Elodea canadensis (Canadian waterweed) and Myriophyllum spicatum (Eurasian watermilfoil) has revealed a higher sensitivity of roots to the general quality of BSs than shoots: shoot length (9%) root length (11%) root number (15%) in M. spicatum; shoot length (22%) root length (42%) root number (44%) in E. canadensis. In contrast to M. spicatum, the growth parameters of roots and shoots in E. canadensis have differed in a significant statistical manner between most BS samples. A reverse correlation has been found between the increase in shoot length and the activity of technogenic radionuclides in BSs, which is mostly significant in E. canadensis (r (2)
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Zotina T. A., Trofimova E. A., Medvedeva M. Y., Dementyev D. V., Bolsunovsky A. Y.
Заглавие : Use of the aquatic plant Elodea canadensis to assess toxicity and genotoxicity of Yenisei River sediments
Место публикации : Environ. Toxicol. Chem. - 2015. - Vol. 34, Is. 10. - С. 2310-2321. - ISSN 07307268 (ISSN) , DOI 10.1002/etc.3057
Ключевые слова (''Своб.индексиров.''): aquatic plants--biomarkers--genotoxicity--sediment quality--sediment toxicity--biomarkers--chromosomes--cytotoxicity--pollution--pollution control--radioactive waste disposal--radioactivity--river pollution--sediments--toxicity--aquatic plants--genotoxicities--laboratory bioassay--radioactive contamination--radioactive pollution--sediment quality--sediment toxicity--toxicity endpoints--rivers--article--bioassay--controlled study--cytotoxicity--elodea canadensis--environmental exposure--genotoxicity--indicator organism--lake sediment--mitosis index--nonhuman--plant growth--plant root--priority journal--radioactive pollution--river--root length--russian federation--sensitivity analysis--shoot--toxicity testing--elodea--elodea canadensis
Аннотация: The toxicity, cytotoxicity, and genotoxicity of bulk sediments from the Yenisei River (Siberia, Russia) were estimated in laboratory bioassays based on several endpoints in the aquatic plant Elodea canadensis. The bottom sediment samples were collected in the Yenisei River upstream and downstream of the sources of chemical and radioactive contamination. The testing revealed different sensitivities of Elodea endpoints to the quality of the bottom sediment: weight of shootslength of shootsmitotic indexlength of rootspercentage of abnormal cells. The response of the genotoxicity endpoint (percentage of cells with chromosome abnormalities in roots of Elodea) was the highest in sediments with chemical pollution, whereas the highest inhibition of toxicity endpoints (shoot and root length) occurred in sediments with the highest level of radioactive pollution. The extreme response of Elodea endpoints to the quality of certain sediment samples may be regarded as related to the possible presence of unknown toxicants. The results show that E. canadensis can be used as an indicator species in laboratory contact testing of bottom sediment. The responses of shoot and root length growth endpoints of Elodea can be recommended as basic sensitivity indicators of bottom sediment toxicity. Analysis of cells carrying abnormal chromosomes in the apical root meristem of Elodea can be performed optionally in the same test to assess the genotoxicity of sediments. © 2015 SETAC.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Velichko V. V., Tikhomirov A. A., Ushakova S. A., Trifonov S. V., Gribovskaya I. V.
Заглавие : The effect of supplementation of the soil-like substrate with wheat straw mineralized to different degrees on wheat productivity in closed ecosystems
Место публикации : Life Sci. Space Res.: Elsevier Ltd, 2020. - Vol. 26. - С. 132-139. - ISSN 22145524 (ISSN), DOI 10.1016/j.lssr.2020.06.001
Аннотация: Successful incorporation of soil-like substrate (SLS) into biotechnical life support systems is often complicated by the necessity to maintain the balance between flows of mineral elements taken up from the substrate by growing plants and mineral elements added to the SLS as components of mineralized plant inedible biomass. An imbalance between these two flows can be caused by the addition of recalcitrant plant waste such as wheat straw. The purpose of this study was to determine whether the availability of essential nutrients to be taken up by the roots of the wheat plants grown on the SLS could be enhanced by supplementing the SLS with the products derived from wheat straw subjected to different levels of physicochemical mineralization in the aqueous solution of hydrogen peroxide. Different degrees of straw mineralization were achieved by using different ratios of the aqueous solution of hydrogen peroxide to straw. The study showed that supplementation of the SLS with insufficiently oxidized products of physicochemical mineralization of straw resulted in a decrease in the grain yields. The inhibitory effect of the straw subjected to physicochemical oxidation increased with a decrease in the degree to which the straw had been oxidized. Only supplementation with the straw mineralized to the highest possible degree did not inhibit plant growth and development, and the crop yield in that treatment was higher than in the other treatments. © 2020
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Bolsunovsky A., Trofimova E., Dementyev D., Petrichenkov M.
Заглавие : The long-term effects of γ-radiation on the growth of Allium cepa plants
Место публикации : Int. J. Radiat. Biol.: Taylor and Francis Ltd., 2020. - Article in press. - ISSN 09553002 (ISSN), DOI 10.1080/09553002.2021.1844337
Аннотация: Purpose: The purpose of this study was to assess the long-term effects of gamma-radiation, including low-dose radiation, on growth parameters of onion (Allium cepa) seedling roots 6–10 days after irradiation. Materials and methods: Onion seedlings were exposed to a 137Cs gamma source at doses ranging from 0.1 to 10 grays (Gy). Responses of root and shoot length growth were studied 6 and 10 days after irradiation. Results: Our results showed inhibition of the root and shoot length growth 6 days after exposure at all doses, including the low dose ? 0.1 Gy. At a later point in time (day 10), root and shoot inhibition was only observed after irradiation at high doses (above 5 Gy), and that suggested the occurrence of cell repair after irradiation at low doses. The results indicated that the length of seedling roots was more sensitive to gamma-irradiation than the shoot length. Conclusion: The results of the study suggested that short-term gamma-irradiation of onion seedlings (absorbed doses of 0.1?10 Gy) caused inhibition of plant growth 6 and 10 days after irradiation. The dose dependence of the onion root length was linear. The present study showed for the first time that short-term low-dose gamma-irradiation could induce long-term negative effects on plant growth. © Copyright © 2020 Taylor & Francis Group LLC.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Bolsunovsky, Alexander, Trofimova, Elena, Dementyev, Dmitry, Petrichenkov, Michail
Заглавие : The long-term effects of gamma-radiation on the growth of Allium cepa plants
Колич.характеристики :6 с
Коллективы : Krasnoyarsk Regional Fund of Science - Russian Foundation for Basic Research [18-44-240001]
Место публикации : Int. J. Radiat. Biol.: TAYLOR & FRANCIS LTD, 2020. - Article in press. - ISSN 0955-3002, DOI 10.1080/09553002.2021.1844337. - ISSN 1362-3095(eISSN)
Примечания : Cited References:28. - The study was partly supported by grant of the Krasnoyarsk Regional Fund of Science - Russian Foundation for Basic Research No. 18-44-240001.
Предметные рубрики: IONIZING-RADIATION
PISUM
ABERRATIONS
MECHANISMS
MERISTEM
SEEDS
Аннотация: Purpose The purpose of this study was to assess the long-term effects of gamma-radiation, including low-dose radiation, on growth parameters of onion (Allium cepa) seedling roots 6-10 days after irradiation. Materials and methods Onion seedlings were exposed to a Cs-137 gamma source at doses ranging from 0.1 to 10 grays (Gy). Responses of root and shoot length growth were studied 6 and 10 days after irradiation. Results Our results showed inhibition of the root and shoot length growth 6 days after exposure at all doses, including the low dose - 0.1 Gy. At a later point in time (day 10), root and shoot inhibition was only observed after irradiation at high doses (above 5 Gy), and that suggested the occurrence of cell repair after irradiation at low doses. The results indicated that the length of seedling roots was more sensitive to gamma-irradiation than the shoot length. Conclusion The results of the study suggested that short-term gamma-irradiation of onion seedlings (absorbed doses of 0.1-10 Gy) caused inhibition of plant growth 6 and 10 days after irradiation. The dose dependence of the onion root length was linear. The present study showed for the first time that short-term low-dose gamma-irradiation could induce long-term negative effects on plant growth.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Aleksandrova Y. V., Zotina T. A., Gaevsky N. A.
Заглавие : Effect of the level of irradiance on growth and content of photosynthetic pigments of Canadian Elodea (Elodea Canadensis) in model system “Water-Bottom Sediments”
Место публикации : J. Sib. Fed. Univ. - Biol.: Siberian Federal University, 2020. - Vol. 13, Is. 2. - С. 188-196. - ISSN 19971389 (ISSN), DOI 10.17516/1997-1389-0317
Аннотация: Bioassays based on aquatic plants are a convenient tool for studying the quality of bottom sediments. One of the stages in the development of a bioassay is the selection of optimal growth conditions for indicator plants in a model test system. Response of indicator physiological endpoints of Canadian waterweed (Elodea canadensis) to light flux density was investigated to determine optimal irradiance level in a “water - sediment” model system, proposed previously for contact bioassay of natural bulk bottom sediments. Based on the response of shoot and root growth (length and weight), and concentration and ratio of photosynthetic pigments (chl. a, chl. b, and carotenoids) of Elodea to the change of light flux density, no limitation or inhibition of growth and photosynthesis of Elodea was revealed at light flux density from 56 to 143 µmol quanta • m-2 • s-1. Hence, the level of irradiance within this range can be recommended for use in the experimental system proposed for bioassay of bulk bottom sediments using E. canadensis as an indicator. © Siberian Federal University. All rights reserved
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