Effects on non-human species inhabiting areas with enhanced level of natural radioactivity in the north of Russia: a review

Гераськин, С. А.; Evseeva, T.; Belykh, Elena S.; Majstrenko, T.; Michalik, B.; Taskaev, A. I.

doi:10.1016/j.jenvrad.2007.01.003

Cited by 31 publications

(13 citation statements)

References 28 publications

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“…5). Similarly, acute c-irradiation of seeds from a wild vetch population that had been inhabiting a site with enhanced levels of natural radioactivity in the north of Russia for long time, resulted in a rather high radiosensitivity in the assays of ''frequency of cytogenetic disturbances in meristematic root tip cells'', ''rate of germination'' and ''survival rate at the end of vegetation period'' (Geras'kin et al 2007). An improved DNA repair capacity and ability to germinate under abiotic stresses (salinity and accelerated ageing) was shown in seed embryos of evening primrose growing near the Chernobyl NPP on sites contaminated with c-and b-emitters, while on the a-, b-and c-contaminated site such an improvement was not found (Boubriak et al 2008).…”

Section: Discussionmentioning

confidence: 99%

Effects of radioactive contamination on Scots pines in the remote period after the Chernobyl accident

et al. 2011

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A 6 year study of Scots pine populations inhabiting sites in the Bryansk region of Russia radioactively contaminated as a result of the Chernobyl accident is presented. In six study sites, (137)Cs activity concentrations and heavy metal content in soils, as well as (137)Cs, (90)Sr and heavy metal concentrations in cones were measured. Doses absorbed in reproduction organs of pine trees were calculated using a dosimetric model. The maximum annual dose absorbed at the most contaminated site was about 130 mGy. Occurrence of aberrant cells scored in the root meristem of germinated seeds collected from pine trees growing on radioactively contaminated territories for over 20 years significantly exceeded the reference levels during all 6 years of the study. The data suggest that cytogenetic effects occur in Scots pine populations due to the radioactive contamination. However, no consistent differences in reproductive ability were detected between the impacted and reference populations as measured by the frequency of abortive seeds. Even though the Scots pine populations have occupied radioactively contaminated territories for two decades, there were no clear indications of adaptation to the radiation, when measured by the number of aberrant cells in root meristems of seeds exposed to an additional acute dose of radiation.

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Section: Discussionmentioning

confidence: 99%

Effects of radioactive contamination on Scots pines in the remote period after the Chernobyl accident

et al. 2011

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“…This element is the terminal product of uranium degradation (Robertson, Allen, Laney, & Curnow, 2013). The lead contamination could be explained in addition to minerals lixiviation process, as result of the uranium natural degradation present in the studied region (CPRM, 2014;Geras'kin et al, 2007;Motoki, Campos, Fonseca, & Motoki, 2012). Nevertheless, such speculation needs to be verified through a future isotopic analysis aiming to understand the sources of lead involved (Cheng & Hu, 2010).…”

Section: Analysis Of Watermentioning

confidence: 92%

“…Especially in warm regions such as the case of the Brazilian northeast, this action is naturally performed helping to reduce and/or prevent the exposure. Unlike, water from Uranium-rich regions can become a constant source to radon exposure (Geras'kin et al, 2007;Al Zabadi, Musmar, Issa, Dwaikat, & Saffarini, 2012;Murat Saç et al, 2014) especially where the accessibility to water supply is restricted as the case of Lajes Pintadas city. In this context, the importance to understand water as source of exposure is enhanced.…”

Section: Analysis Of Watermentioning

confidence: 99%

<b>Influence of natural radon and metal contamination on surface water quality from a Brazilian Semiarid Region

Dantas

Navoni

Ferreira

et al. 2017

Acta Sci. Biol. Sci.

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ABSTRACT. The Brazilian semiarid region presents some adverse environmental conditions for the settled population such as a restricted water availability and the presence of radon and metal natural sources that can contaminate the water reservoirs and consequently become a concern for human health. The present study evaluated the water quality of the Riacho das Cachoeiras Dam located in the urban area of Lajes Pintadas (state of Rio Grande do Norte, Brazil) as source for human consumption. An analysis of Physicochemical parameters, heavy metal content and Radon in water samples was performed along with the assessment of the water mutagenic potential through Micronucleus Test (MN) on Tradescantia pallida and Oreochromis niloticus. The content of metals in water for Al, Cd, and Ni were above water quality guidelines for human consumption. Moreover, high levels of Pb along with dissolved Radon were found. An acute and chronic mutagenic water capability was observed. These findings demonstrated that the water quality is unsuitable for human consumption due to the presence of high levels of contaminants mainly from geogenic origin and its deleterious effect on living systems.Keywords: radiation, lead, mutagenicity, micronucleus, geogenic contamination.Influência da contaminação natural pelo radônio e metais na qualidade das águas superficiais da Região Semiárida Brasileira RESUMO. A região semiárida brasileira apresenta condições ambientais adversas para população local, como a escassez na disponibilidade de água e a presença de fontes naturais de radônio e de metais que podem contaminar os reservatórios de água e, consequentemente, tornar-se um problema de saúde humana. O estudo avaliou a qualidade da água do Açude do Riacho das Cachoeiras localizado na área urbana de Lajes Pintadas (Rio Grande do Norte, Brasil) como fonte para o consumo humano. Foram realizadas análises físico-químicas, de conteúdo de metais e de radônio em amostras de água em conjunto com a avaliação do potencial mutagênico da água por meio do teste de micronúcleos (MN) em Tradescantia pallida e Oreochromis niloticus. Os metais Al, Cd, e Ni estavam acima das diretrizes de qualidade da água para o consumo humano. Além disso, foram encontrados altos níveis de Pb dissolvido, juntamente com o radônio. Observou-se um potencial de indução de efeito mutagênico nas amostras de água testadas, tanto na exposição aguda quanto na crônica. Estes resultados demonstram que a qualidade da água do Açude está imprópria para o consumo humano devido à presença de elevados níveis de contaminantes de origem geogênica, com capacidade de exercer efeito deletério sobre os organismos.

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“…Plant uptake of radionuclides into the human food chain is one of many vectors used for calculating exposure rates and performing risk assessment (Rosén et al 1995). Geras'kin et al (2007) performed long-term radioecological investigations and concluded that adverse somatic and genetic effects are possible in plants and animals due to radium and uranium-radium contamination in the environment.…”

Section: Introductionmentioning

confidence: 99%

Phytoremediation of Radionuclides: A Report on the State of the Art

Jagetiya¹,

Sharma²,

Soni³

et al. 2014

Radionuclide Contamination and Remediation Through Plants

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Radionuclides mobilization through extraction from ores and processing for various applications has led to the discharge of these harmful elements into the environment. These contaminants pose a great risk to human health and environment. Remediation of radionuclides and toxic heavy metals deserves the proper attention. Conventional remediation methods used for polluted environments have many limitations including high costs, alteration in soil properties, and disruption in soil native microflora. Alternatively, phytoremediation can serve as a prospective method for decontamination and rehabilitation of polluted sites. The term phytoremediation actually refers to a diverse collection of plant-based technologies, i.e. either naturally occurring or genetically engineered plants are used for cleaning the contaminated environment. Phytoremediation techniques are eco-friendly, cost-effective, easy to implement, and offer an aesthetic value and solar-driven processes with better public acceptance. Practicing various agronomic alterations as well as spatial and successful combination of different plant species assures maximal phytoremediation efficiency. Plants and microorganisms can be genetically modified to remediate the contaminated ecosystems at an accelerated rate. We can harvest better results from phytoremediation technologies by learning more about the different biological processes involved. The future of phytoremediation comprises of ongoing research work and has to go through a developmental phase and several technical barriers. Several attempts still need to be performed with multidisciplinary approach for successful future phytoremedial programmes. This report comprehensively reviews the background, techniques, concept and future course in phytoremediation of heavy metals, particularly radionuclides.

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Effects on non-human species inhabiting areas with enhanced level of natural radioactivity in the north of Russia: a review

Cited by 31 publications

References 28 publications

Effects of radioactive contamination on Scots pines in the remote period after the Chernobyl accident

Effects of radioactive contamination on Scots pines in the remote period after the Chernobyl accident

<b>Influence of natural radon and metal contamination on surface water quality from a Brazilian Semiarid Region

Phytoremediation of Radionuclides: A Report on the State of the Art

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