Bio-monitoring the genotoxicity of populations of Scots pine in the vicinity of a radioactive waste storage facility

Гераськин, С. А.; Kim, Jin Kyu; Oudalova, A.; Vasiliyev, Denis; Dikareva, Nina S.; Zimin, V.L.; Dikarev, Vladimir G.

doi:10.1016/j.mrgentox.2005.02.003

Cited by 33 publications

(22 citation statements)

References 20 publications

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“…Results presented here are in agreement with those obtained in our previous studies on cytogenetic effects in Scots pine populations under chronic exposure to radionuclides (Geras'kin et al 2003) or man-made pollution (Geras'kin et al 2005). However, the higher rate of mutation had no effect on reproductive ability of these trees.…”

Section: Discussionsupporting

confidence: 93%

“…Long-term observations of coniferous tree populations within areas contaminated from radiation accidents present a unique opportunity to obtain quantitative data on the biological consequences of chronic radiation exposure including trends and dynamics of adaptation processes. The present study follows preceding investigations (Geras'kin et al 2003(Geras'kin et al , 2005 that showed the frequency of cytogenetic abnormalities in root meristems of germinated Scots pine seeds may be used to quantify pollution-induced stress, not only in areas with prominent damage to the conifers, but also in forests with slight or no visible symptoms of an impact. Such research is likely to increase in importance since very few studies have been carried out on natural populations exposed to chronic radiation at levels slightly higher than background.…”

Section: Introductionmentioning

confidence: 58%

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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: Discussionsupporting

confidence: 93%

Section: Introductionmentioning

confidence: 58%

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

et al. 2011

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“…The results of these experiments indicate that cytogenetic disturbances frequency in the affected populations is significantly higher than in the reference populations during the whole four-year observation period. Compiled with data from other our studies [2,4], these findings indicate that an increased level of cytogenetic disturbances is a typical phenomenon for plant populations growing in areas with relatively low levels of pollution. With each passing year since the Chernobyl accident of 1986, more questions arise [8] about the potential for organisms to adapt to radiation exposure.…”

Section: Resultssupporting

confidence: 75%

Effects of radioactive contamination on plant populations and radiological protection of the environment

et al. 2009

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Abstract.Data from large scale field experiments are clearly highly relevant to the development of a new system for radiological protection of the environment. Therefore, an actuality and severity of population-level effects within radioactively contaminated areas are among key problems today. The results of long-term field studies in the Bryansk Region, Russia, affected by the Chernobyl accident, and at the Semipalatinsk Test Site, Kazakhstan are discussed. The results of these studies clearly indicate that plant populations growing in areas with relatively low levels of pollution are characterized by the increased level of both cytogenetic disturbances and genetic diversity. Genetic processes in exposed populations lead to increasing of phenotypic diversity and rapid selection of novel phenotypes favoured in changed environment. In particular, radioactive contamination of the plants' environment activates genetic mechanisms, changing a population's resistance to exposure. However, in different radioecological situations, genetic adaptation to extreme edaphic conditions in plant populations could be achieved with different rates. Such evolutionary effects are of special concern because they are able to negatively affect population dynamics and local extinction rates. A development of a system for protection of the environment from ionizing radiation should be based on a clear understanding of these effects and their contribution to biological response.

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“…One of the aspects of the adaptive processes that occurred in plant populations under radioactive contamination is a much higher radioresistance of the seeds, as detected in experiments with acute g-ray exposure (Mewissen et al, 1959;Cherezhanova et al, 1971;Zuravskaya, 1993;Pozolotina, 2003;Geras'kin et al, 2005a). There is convincing proof (Shevchenko et al, 1992) that the divergence of populations in terms of radioresistance is connected with selection for changes in the effectiveness of the repair systems.…”

Section: Discussionmentioning

confidence: 99%

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

Гераськин

Evseeva

Belykh

et al. 2007

Journal of Environmental Radioactivity

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Bio-monitoring the genotoxicity of populations of Scots pine in the vicinity of a radioactive waste storage facility

Cited by 33 publications

References 20 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

Effects of radioactive contamination on plant populations and radiological protection of the environment

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

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